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Zeeb Road Ann Arbor, Ml 48106 1323202 GITTINS, LAVEENA ANNE PERSONAL SPACE AND THE DYSPNEIC PATIENT THE UNIVERSITY OF ARIZONA University Microfilms International 300 N. Zeeb Road, Ann Arbor, MI 48106 M.S. 1984 PLEASE NOTE: In all cases this material has been filmed in the best possible way from the available copy. Problems encountered with this document have been identified here with a check mark V . 1. Glossy photographs or pages 2. Colored illustrations, paper or print 3. Photographs with dark background 4. Illustrations are poor copy 5. Pages with black marks, not original copy 6. Print shows through as there is text on both sides of page 7. Indistinct, broken or small print on several pages 8. Print exceeds margin requirements 9. Tightly bound copy with print lost in spine 10. Computer printout pages with indistinct print 11. Page(s) author. lacking when material received, and not available from school or 12. Page(s) seem to be missing in numbering only as text follows. 13. Two pages numbered 14. Curling and wrinkled pages 15. Other . Text follows. University Microfilms International PERSONAL SPACE AND THE DYSPNEIC PATIENT by Laveena Anne G i t t i n s A Thesis Submitted to the Faculty o f the COLLEGE OF NURSING I n P a r t i a l F u l f i l l m e n t o f the Requirements For the Degree o f MASTER OF SCIENCE I n the Graduate College THE UNIVERSITY OF ARIZONA 19 8 4 STATEMENT BY AUTHOR This thesis has been submitted i n p a r t i a l f u l f i l l m e n t o f r e quirements f o r an advanced degree a t The University o f Arizona and i s deposited i n the University L i b r a r y t o be made a v a i l a b l e t o borrowers under rules o f the L i b r a r y . B r i e f quotations from t h i s thesis a r e allowable without special permission, provided that accurate acknowledgment o f source i s made. Requests f o r permission f o r extended quotation from o r reproduction o f t h i s manuscript i n whole o r i n p a r t may be granted by the head o f the major department o r the Dean o f the Graduate College when i n h i s judg ment the proposed use o f the material i s i n the i n t e r e s t s o f scholar ship. In a l l other instances, however, permission must be obtained from the author. SIGNED APPROVAL OF THESIS DIRECTOR This thesis has been approved on the date shown below: G- A. TRAVER Associate Professor o f Nursing ^ ^ /f& U Date ACKNOWLEDGMENTS Many people made t h i s study possible. The investigator i s g r a t e f u l f o r t h e i r continued help and encouragement. The investigator i s deeply indebted t o her thesis committee: Gayle Traver, Chairman, Dr. Joyce Verron and D r . A l i c e Longman. Their guidance and counsel was invaluable. Sincere thanks i s extended t o the s t a f f and c l i e n t s o f the outpatient r e s p i r a t o r y c l i n i c . Their genuine i n t e r e s t and cooperation was g r e a t l y appreciated. F i n a l l y , the investigator wishes t o acknowledge the encourage ment and i n s p i r a t i o n received from her husband, Wyn. TABLE OF CONTENTS Page LIST OF TABLES vi ABSTRACT 1. vii INTRODUCTION 1 Purpose of the Study Significance of the Problem Conceptual Framework Study Questions D e f i n i t i o n of Terms 2. REVIEW OF THE LITERATURE 8 Shape and Size o f Personal Space E f f e c t s of Sex, Age, Culture and Environment Invasion o f Personal Space Personal Space and the Dyspneic P a t i e n t Methods of Studying Personal Space Summary 3. RESEARCH METHODOLOGY 9 11 13 14 16 19 20 Protection of Human Subjects Setting and Sample Data Collection Tools Data Collection Protocol Analysis o f Data 4. 2 3 k 6 7 PRESENTATION AND ANALYSIS OF DATA Characteristics of the Sample Analysis o f Findings Findings Related t o Study Questions R e l i a b i l i t y and V a l i d i t y Testing o f Form A and Form B o f Reaction t o Nursing Care iv 20 20 21 22 25 25 26 27 31 TABLE OF CONTENTS—Continued Page 5. CONCLUSIONS, IMPLICATIONS AND RECOMMENDATIONS FOR FURTHER STUDY Findings i n R e l a t i o n t o Conceptual Framework Findings i n Relation t o the L i t e r a t u r e Implications f o r Nursing Limitations Areas f o r Further Study 34 34 36 37 39 40 APPENDIX A: COMFORTABLE INTERPERSONAL DISTANCE SCALE . . . 42 APPENDIX B: HUMAN SUBJECTS APPROVAL 43 APPENDIX C: DISCLAIMER 44 APPENDIX D: SUBJECT PROFILE 45 APPENDIX E: REACTION TO NURSING CARE--F0RM A 46 APPENDIX F: REACTION TO NURSING CARE—FORM B . . . . . . . 47 APPENDIX G: AUTHOR'S PERMISSION TO USE THE CID 48 APPENDIX H: MARLOWE-CROWNE SOCIAL DESIRABILITY SCALE M-CI (10) 49 APPENDIX I : COVARIANCE MATRIX—FORM A 50 APPENDIX J: COVARIANCE MATRIX—FORM B 52 REFERENCES 54 LIST OF TABLES Table Page 1. Characteristics and D i s t r i b u t i o n o f Subjects by Sex . . . 26 2. Two Way Analysis o f Approaches t o Dyspneic and Nondyspneic Subjects 29 Paired T - t e s t s o f Approaches during Nondyspneic and Dyspneic States 30 k. Form A and Form B Paired T - t e s t 31 5. Summary Item t o Item Correlations f o r R e l i a b i l i t y Analysis o f Form A and Form B 32 3. vi ABSTRACT The conceptual framework f o r t h i s study was based on theories o f personal space. The study's purpose was t o determine some o f the e f f e c t s o f dyspnea on personal space o f chronic respiratory disease patients. I n addition reaction t o intrusion o f personal space by nurses when subjects were nondyspneic and dyspneic was studied. T h i r t y subjects p a r t i c i p a t e d i n the study. Interpersonal Distance Tool The Comfortable (CIO) was used t o measure personal space. Subjects responded t o two s t i m u l i on the CID; a close family member and an unknown nurse. Responses to these stimuli were measured f o r dyspneic and nondyspneic s t a t e s . A Reaction t o Nursing Care tool was developed t o measure responses t o intrusion o f personal space by nurses. The findings concluded that subjects preferred close family members t o approach nearer than the nurse during states o f dyspnea and nondyspnea. During periods o f dyspnea, subjects preferred both family members and nurses to stay f u r t h e r away than during nondyspneic states. Nurses' intrusion o f personal space was perceived as necessary i n order t o a s s i s t subjects a l l e v i a t e symptoms. CHAPTER 1 INTRODUCTION Han's use of space as a means o f communication has been the focus o f study f o r many social s c i e n t i s t s . H a l l (1966) coined the term proximics to describe the study o f man's s o c i a l - s p a t i a l behavior. He used the term personal space t o describe the space peripheral t o the body that an individual considers as h i s own. Personal space i s the distance an individual maintains between himself and others. The boun daries a r e i n v i s i b l e but personal space i s the area immediately sur rounding an i n d i v i d u a l . This space acts as a buf fer zone i n interpersonal i n t e r a c t i o n (Horowitz, D u f f , and Statton, 196*0. Personal space a l t e r s under various conditions. When an i n dividual interacts with a well-known f r i e n d , personal space contracts. I n t e r a c t i o n with strangers causes personal space t o expand ( L i t t l e , 1965)- Personal space i s a f f e c t e d by the sex, age and status of the individual with whom one i s i n t e r a c t i n g . Socio-cultural rules govern the maintenance and invasion of personal space. An individual attempts t o maintain control o f invasion o f personal space. I f one i s unable to control the invasion o f one's personal space, feelings of discomfort a r i s e . When socio-cultural rules governing personal space a r e not adhered t o , the individual begins to f e e l uncomfortable. 1 2 Health care settings a f f e c t personal space. Health care work ers frequently encroach upon an i n d i v i d u a l ' s personal space i n order t o assess and care f o r an i n d i v i d u a l . Therapeutic invasion o f personal space may be perceived by the p a t i e n t as h e l p f u l or threatening depend ing on the p a t i e n t ' s expectations. The stress o f the i l l n e s s i t s e l f o f t e n a l t e r s an i n d i v i d u a l ' s personal space. Dosey and Meisels (1969) found that s t r e s s f u l , threatening situations expand an i n d i v i d u a l ' s personal space. Individuals with chronic r e s p i r a t o r y disease experience i n creased stress when they develop dyspnea. Kent and Smith (1977) noted that the p a t i e n t always experienced f e e l i n g s o f panic during episodes o f dyspnea. The dyspneic p a t i e n t ' s perception o f personal space may be indicated by h i s expression of claustrophia as described by Kent and Smith (1977)- T r a v e r ' s (1983) anecdotal notes from a c l i n i c a l s e t t i n g indicated t h a t the dyspneic p a t i e n t f e l t that people who come too close blocked the p a t i e n t ' s access t o a i r . Physical measures undertaken by nurses t o a s s i s t the dyspneic p a t i e n t breathe more e a s i l y o f t e n require close body contact with the patient. Nurses a l s o use physical closeness, touch and eye contact t o reassure and support the p a t i e n t . A l l o f these actions may encroach upon the p a t i e n t ' s personal space. Purpose o f the Study The purpose o f t h i s study was t o compare the respiratory p a t i e n t ' s perception o f personal space during periods o f normal breath ing and during periods o f dyspneic breathing. Responses o f the 3 subjects t o Invasion of personal space by nurses during normal breath ing and during dyspnea were a l s o studied. Significance o f the Problem Nurses caring f o r dyspneic patients g i v e emotional support t o the p a t i e n t with nonverbal methods o f communication. Actions such as taking the p a t i e n t ' s hand, making eye contact and placing an arm around the p a t i e n t a r e some o f the methods used t o convey the nurse's concern and support. Nurses also a s s i s t p a t i e n t s t o control t h e i r breathing patterns by placing t h e i r hands on the p a t i e n t ' s chest or sides. Such actions may encroach upon the p a t i e n t ' s personal space. Stillman (1978) stated t h a t how one f e e l s about one's personal space determines how muph intrusion by others one finds acceptable. How the p a t i e n t f e e l s about the invasion o f personal space necessitated by the nurse's care i s d i f f i c u l t t o assess. The p a t i e n t with dyspnea i s concentrating on c o n t r o l l i n g h i s r e s p i r a t i o n s . He has l i t t l e energy l e f t to convey the discomfort he may feel when the nurse's actions a r e perceived as unacceptable invasion o f personal space. Ricci (1981) noted that invasion o f personal space can pose a t h r e a t t o a person's security and e l i c i t a n x i e t y . a compounding f a c t o r f o r the dyspneic p a t i e n t . Anxiety i s already Kent and Smith (1977) stated that f e a r was endemic to the psychology o f the respiratory patient. Increasing the anxiety o f the dyspneic patients exacerbated t h e i r symptoms (Dudley e t a l . , 1980). Therefore, the nurse who cared f o r the dyspneic p a t i e n t needed t o be aware that encroachment upon the p a t i e n t ' s personal space may have been threatening t o him. The k nurse needed t o be aware o f how the dyspneic p a t i e n t responded t o invasion o f personal space i n order t o avoid actions which would i n crease the p a t i e n t ' s a n x i e t y . Two investigators suggested t h a t nurses needed t o conduct research i n t o aspects o f personal space. A l l e k i a n (1973) suggested that studies be conducted to establish those behaviors o r treatments that a r e most anxiety producing when personal space i s invaded. Ricci (1981) pointed out t h a t feelings experienced by p a t i e n t s during i n t e r actions with nurses needed t o be investigated. This study proposes t o answer some o f these questions which required f u r t h e r i n v e s t i g a t i o n . Conceptual Framework Personal space i s the area immediately surrounding every i n d i vidual. This space functions as a b u f f e r zone to protect one from per ceived threats t o emotional well being (Dosey and Meisels, 1969; Horowitz e t a l . , 1964). H a l l (1966) measured and defined four major divisions of per sonal space. They were: 1. Public distance--twelve f e e t or more from the body. 2. Social distance—two t o twelve f e e t from the body. 3. Personal distance—eighteen inches t o twelve f e e t from the body. k. Intimate distance—zero to eighteen inches from the body. For the purposes o f t h i s study, the areas involved were those Hall (1966) c a l l e d personal distance and intimate distance. 5 The s i z e , shape and p e n e t r a b i l i t y o f personal space depends on immediate interpersonal events, as well as ego and motivational states o f the individual (Horowitz e t a l . , 1964). Kuethe (1962) found t h a t personal space was a function o f r e l a t i o n s h i p . I n h i s experiments, a c h i l d moved closer to the mother than t o the f a t h e r . Geden and Begeman (1981) found t h a t h o s p i t a l i z e d adults had d i f f e r e n t sizes o f personal space i n the hospital than i n t h e i r homes. Personal space was also a f f e c t e d by c u l t u r e ( H a l l , 1966), age (Louis, 1981), emotions (Meisels and Dosey, 1971) and sex (Guardo, 1976). Individuals responded t o invasion o f personal space i n a v a r i e t y o f ways, designed to increase interpersonal distance and reduce discom f o r t (Altman, 1976). Intrusion o f personal space may be threatening or may be pleasing t o the i n d i v i d u a l . Invasion over which the individual has no control i s o f t e n perceived as threatening (Maagdenberg, 1983). Invasion which the individual has i n v i t e d o r occurs i n a manner acceptable to the individual i s perceived as nonthreatening and h e l p f u l . The r o l e o f the nurse i s t o a s s i s t others meet t h e i r needs t o a t t a i n and maintain optimum l e v e l s o f h e a l t h . The assistance given by nurses has t o be acceptable t o patients i n order t o be e f f e c t i v e . Individuals with chronic respiratory disease require emotional support t o a l l e v i a t e some o f the distress experienced during dyspneic episodes. The methods nurses use t o convey support a r e frequently nonverbal actions. Nonverbal communication o f t e n encroaches upon the p a t i e n t ' s personal space. The nurse needs t o be aware o f the p a t i e n t ' s response t o therapeutic interventions. How the p a t i e n t f e e l s about h i s personal space i s an important aspect t o consider when evaluating the p a t i e n t ' s 6 response t o nursing actions. Acceptance o r r e j e c t i o n o f nursing actions may be predicated on whether o r not the p a t i e n t f e e l s h i s p e r sonal space has been respected. Sommer (1959) found that approaching subjects too closely increased t h e i r l e v e l o f a n x i e t y . When patients perceived invasion of personal space as threatening, d i s t r e s s was i n creased. Emotional d i s t r e s s increased the chronic respiratory p a t i e n t ' s dyspnea. Study Questions 1. Does the personal space o f a chronic respiratory p a t i e n t change i n s i z e during periods o f dyspnea? 2. I s the shape o f personal space i n the chronic respiratory p a t i e n t a l t e r e d by dyspnea? 3. Does the personal space o f the chronic respiratory p a t i e n t d i f f e r when approached by a close family member and by an un known nurse when the subject i s breathing normally o r experi encing dyspnea? k. Does personal space change due to an i n t e r a c t i o n between the type of person approaching the subject and the dyspneic or nondyspneic s t a t e of the subject? 5. Are actions o f the nurse perceived as invasions o f personal space by chronic respiratory p a t i e n t s when dyspneic or non dyspneic? D e f i n i t i o n o f Terms Personal space—the space an individual maintains between s e l f and others during social i n t e r a c t i o n s . The space was measured by the Comfortable Interpersonal Distance Scale (Duke and Nowicki, 1972). Invasion—unsolicited entrance a c t i v i t y or contact w i t h i n personal space ( A l l e k i a n , 1973). CHAPTER 2 REVIEW OF THE LITERATURE The term personal space was f i r s t coined by the b i o l o g i s t Katz (1937)• He used the term to describe the distance birds main tained between themselves during f l i g h t and landing. Sociologists began to apply the term personal space t o people i n the 1950s. Much of the e a r l y work on personal space i n health care settings was done in psychiatric i n s t i t u t i o n s . Sommer (1959) observed the spatial behavior of people i n the dining and l i v i n g rooms o f a large psychi atric hospital. Horowitz (1965) mapped the use o f space by inmates in a large m i l i t a r y h o s p i t a l . Felipe and Sommer (1966) studied personal space responses of residents i n a l a r g e s t a t e mental in stitution. Currently there i s some controversy over the use o f the term personal space. Levy-Leboyer (1983) states the term personal space i s questioned on a conceptual basis. She quotes L'Ecuyer (1976) who emphasized that there i s always a social dimension involved, there f o r e personal space i s a misnomer. What one i s a c t u a l l y observing i s the interpersonal distance maintained between people w i t h i n a given communication context. I n t h i s study the term personal space is viewed as synonymous with the term interpersonal distance. 8 9 Shape and Size o f Personal Space Several investigators have attempted t o measure and describe the shape o f personal space. Although the terms used t o describe the various aspects of personal space d i f f e r , the r e s u l t s o f t h e i r e x p e r i ments were comparable. Lyman and Scott (1967) postulated that people have four distances which were used during i n t e r a c t i o n s . They labeled these four areas p u b l i c , home, interactional and body t e r r i t o r i e s . Body t e r r i t o r i e s were those immediately surrounding an individual and were i n v i o l a t e . Hall (1966) described the spatial behavior o f white middle class Americans. He defined and measured four major d i v i s i o n s . They were: 1. Intimate distance which was zero to eighteen inches from the body, 2. Personal distance eighteen inches t o two f e e t from the body, 3. Social distance two f e e t t o twelve f e e t from the body, and k. Public distance twelve f e e t and over from the body. There was a near and f a r phase f o r each distance. The f a r phase of intimate distance was reserved f o r family and close f r i e n d s . The near phase of personal space allowed persons t o touch one another and was used f o r f r i e n d l y i n t e r a c t i o n s . The f a r phase o f H a l l ' s personal d i s tance was the l i m i t two people can separate and s t i l l touch. Hall's intimate distance was comparable t o Lyman and S c o t t ' s (1967) body territories. Ricci (1981) noted that i n t e r a c t i o n i n public w i t h i n intimate d i v i s i o n o f space was not considered proper f o r adult middle class Americans. Hall conceptualized the shape o f personal space t o be a series of concentric c i r c l e s . F e l i p e and Sommer (1966) presented evidence that personal space did not conform t o regular spheres, but resembled f l u c t u a t i n g globes. The concentric c i r c l e notion was a l s o negated by McBride, King,and James (1965). I n t h e i r experiments using galvanic skin response t o measure the e f f e c t o f invasion on personal space, they found personal space t o be greater i n f r o n t than a t the sides of the body. Personal space to the rear was the shortest distance from the body. Horowitz e t a l . (1964) a l s o found t h a t people described a greater personal distance i n f r o n t . Louis (1981) found that e l d e r l y residents i n a housing complex had smaller face to face personal space than i n l a t e r a l positions. She postulated that these measures were due t o a loss o f acuity i n s i g h t . Kinzel (1970) compared the personal space needs o f v i o l e n t prisoners with non-violent prisoners. He found that the rear zones were l a r g e r than f r o n t a l zones i n v i o l e n t prisoners. In contrast the non-violent prisoners had l a r g e r f r o n t a l zones than rear zones. He concluded that prisoners with aggressive tendencies had disturbed personal space needs. These studies indicated that personal space was a phenomenon that fluctuated around an i n d i v i d u a l . S p e c i f i c types o f interactions were permissible w i t h i n d e f i n i t e prescribed distances from the body. The shape and s i z e o f personal space was determined by s o c i a l , psycho l o g i c a l , and physiological f a c t o r s . 11 E f f e c t s o f Sex, Age, Culture and Environment Sex, age, and c u l t u r e a f f e c t personal space perception. McBride e t a l . (1965) found t h a t heterosexual p a i r s had l a r g e r personal space areas than same sex p a i r s . Sommer (1969) found t h a t male p a i r s r e quired s i g n i f i c a n t l y l a r g e r personal space areas than female p a i r s . He a l s o noted t h a t male p a i r s required greater space between the p a i r mem bers than d i d female p a i r s . Nesbitt and Stevens (197^) found t h a t male subjects approached female models more closely than female subjects approached male models. Evans and Howard (1973) stated that hetero sexual p a i r s require less space than female p a i r s which i n turn require less space than male p a i r s . Fisher and Byrne (1975) found t h a t s o l i t a r y males i n l i b r a r i e s erected b a r r i e r s against f a c e - t o - f a c e invasion, whereas females erected b a r r i e r s against side-by-side invasion. Peterson (1973) studied the personal space needs o f elementary school c h i l d r e n . needs. I n f i r s t grade boys and g i r l s had s i m i l a r spatial By the t h i r d grade boys had l a r g e r space needs than g i r l s , and approached a p a t t e r n s i m i l a r t o a d u l t s . Mishra (197^) studied i n t e r - generational spatial behaviors i n young and o l d women. He found that longer intrusion o f personal space was t o l e r a t e d by persons w i t h i n the same age range than by persons o f d i f f e r e n t age ranges. Engebretson (1973) indicated that personal space was c u l t u r a l l y determined. The function of personal space was to f a c i l i t a t e social behavior w i t h i n the c u l t u r e . Hall (1966) compared the use o f space by American and English u n i v e r s i t y students. He concluded that these two cultures communicated spatial needs d i f f e r e n t l y . An American requiring more space r e t i r e d to h i s own room and closed the door. The English 12 s i g n i f i e d the need f o r more personal space by decreasing verbal commu nication. H a l l also noted t h a t the French used smaller personal space areas than North Europeans and Americans. Watson and Graves (1966) observed t h a t Arabs confront each other and use smaller personal space areas than Americans. Watson (1970), i n a cross c u l t u r a l study o f proxemic behavior concluded t h a t people do not recognize t h e i r own spatial behaviors. tural pattern. They therefore do not understand a d i f f e r e n t c u l Friendly approaches may be misconstrued as aggressive threats. I n s t i t u t i o n a l i z a t i o n o f an individual a l t e r s h i s personal space. The i d e n t i t y o f the individual with whom one i n t e r a c t s also a f f e c t s an i n d i v i d u a l ' s personal space. Allekian (1973) and Baur (1979) studied t e r r i t o r i a l i t y and personal space i n nursing home residents. They found that the longer an individual had been a resident the smaller were h i s personal space needs. Geden and Begeman (1981) studied personal space preferences o f 30 male and 30 female medical surgical p a t i e n t s . They used f i g u r e placement techniques t o measure personal space preferences. Their findings indicated that personal space preferences were smaller i n hospitals than a t home. I n both settings figures representing family members were placed closest to figures representing the subjects. The f i g u r e representing the doctor was placed next closest t o the s e l f figure. The nurse f i g u r e was placed f u r t h e r away than the doctor f i g u r e and a f i g u r e representing a stranger was placed the f u r t h e s t away from the s e l f f i g u r e . The above studies showed that age, sex, and environment affected personal space. I n t e r p r e t a t i o n o f another's approaches was c u l t u r a l l y 13 determined. Problems i n interpersonal interactions occurred when one person misinterpreted another's personal space behavior. Invasion o f Personal Space Our understanding o f personal space has been gained by study ing responses e l i c i t e d by invasion i n t o that space. Ricci (1981) stated that invasion was intrusion i n t o a person's self-boundaries. (1970) studied sex and race norms of personal space. types o f personal space invasion. They were: Liebman He found three overly close physical distance, inappropriate body position and inappropriate behaviors that r e s u l t i n excessive symbolic intimacy. F e l i p e and Sommer (1966) observed psychiatric p a t i e n t s ' r e sponses t o invasion by s i t t i n g too close t o p a t i e n t s . t h a t s p a t i a l invasion had a d i sruptive e f f e c t . f l i g h t t o antagonistic d i s p l a y . Responses showed Reactions ranged from Too close stimulation of v i s u a l , tac t i l e , and o l f a c t o r y senses was also perceived as invasive. Argyle and Dean ( I 9 6 5 ) studied eye contact changes i n response t o invasion o f personal space. They observed that the closer people were standing t o each other the less frequent was eye contact. When eye contact did occur, i t lasted f o r a shorter period o f time than when people stood f u r t h e r a p a r t . A l l e k i a n (1973), i n a review of personal space studies, r e ported that people tend t o avoid invasion o f personal space. Avoidance behaviors included moving away, p u l l i n g oneself i n or scowling a t the intruder. When avoidance o f intrusion was not possible, people experi enced embarrassment o r unease. ] k Maagdenberg (1983) conducted a survey o f e l d e r l y nursing home residents to discover reasons f o r abusive behavior toward s t a f f . The residents indicated they f e l t anger t o the point o f assault when nurses touched them without asking permission. Such a c t i v i t i e s as taking temperatures, feeding, or t r a n s f e r r i n g them from beds t o wheelchairs e l i c i t e d the anger. The residents also stated they were uncomfortable and f e l t threatened when doctors or nurses poked a t t h e i r incision without providing privacy. McBride e t a l . (1965) studied responses to personal space i n vasion. They found that a galvanic skin response was e l i c i t e d when subjects perceived invasion o f t h e i r personal space. This study i n d i cated that involuntary physiological reactions occurred i n response to invasion o f personal space. The studies quoted indicated that invasion o f personal space e l i c i t e d physiological, physical and psychosocial responses. Unsolic i t e d invasion that was not controlled by the individual was d i s r u p t i v e . Invasion produced feelings o f discomfort, t h r e a t and anxiety i n i n d i v i d uals. Individuals attempted to a l l e v i a t e these feelings by withdrawing from the s i t u a t i o n or exhibited aggressive behavior towards the invader. Personal Space and the Dyspneic Patient The individual with pulmonary disease becomes anxious when he develops dyspnea. Dyspnea i s a subjective f e e l i n g o f breathlessness associated with v e n t i l a t o r y inadequacy (Luckman and Sorenson, 1980). Agle and Baum (1977) stated that the anxiety resulted from the dyspnea i t s e l f and a closely associated fear o f suffocation and death. Traver 15 (1982) stated that the p a t i e n t experiencing shortness of breath fears death even though he had experienced the same symptoms before and had survived. Anecdotal notes from a p a t i e n t i n intensive care f o r respiratory distress g r a p h i c a l l y describe the f e a r o f dying (Traver, 1983)f e l t her heart would stop. She She found t h a t having l a r g e numbers o f u n f a m i l i a r people close t o her increased her d i s t r e s s . People who moved too close and talked too loudly appeared t o have d i s t o r t e d faces. f e l t these people were going t o "do her i n . " She S t a f f who spoke s o f t l y to her before g e t t i n g too close were people she could t r u s t . Kent and Smith (1977) noted that dyspneic p a t i e n t s f e l t claustrophic and made comments such as " i t f e e l s as i f the walls a r e closing i n on me." Barstow (197^), i n a study o f coping mechanisms used by chronic respiratory p a t i e n t s , found that subjects engaged i n techniques to decrease the impact o f t h e i r symptoms on others. These included w i t h drawal from others during bouts o f coughing or wheezing. The study demonstrated the awareness chronic respiratory patients had o f how t h e i r symptoms could invade the personal space o f others. Concern with how others were a f f e c t e d by respiratory symptomatology increased the respiratory p a t i e n t ' s a n x i e t y . Attending t o the pulmonary p a t i e n t ' s psychological fears and r e l i e v i n g t h e i r anxiety i s an important modality o f t h e i r c a r e . Agle and Baum (1977) noted a close r e l a t i o n s h i p between respiratory function and psychological outlook. They studied 23 pulmonary patients and found that those whose psychological outlook improved had fewer hospi t a l izations and reported an increase i n useful l i f e a c t i v i t i e s . 16 Schraa and Dirks (1982) studied the e f f e c t o f anxiety i n respiratory p a t i e n t s . They looked a t r e c a l l o f , and compliance with instructions given t o p a t i e n t s . They found that patients with high l e v e l s o f anxiety were less able t o r e c a l l or respond t o medical instruction. cesses. The dyspneic p a t i e n t was anxious due t o disease pro Invasion o f personal space also increased anxiety and de creased the i n d i v i d u a l ' s a b i l i t y t o process information. Evans and Howard (1973) reported that reduced interpersonal distance decreased performance when individuals were working on information processing tasks. Meisenhelder (1982) stated that i t was the nurse's r o l e t o pro vide an environment which preserved the c l i e n t ' s personal space. sonal space was an integral p a r t o f each i n d i v i d u a l . Per Physicians, nurses, and students presumed ready access t o any area o f the p a t i e n t ' s body. This presumption invaded the p a t i e n t ' s personal space. Invasion o f personal space increased anxiety f o r everyone but compounded the anxiety experienced by the dyspneic p a t i e n t . Anxiety increased the dyspneic p a t i e n t ' s symptoms, reduced h i s r e c a l l o f instructions and prevented h i s compliance with medical protocol. Some o f the anxiety expressed by the dyspneic p a t i e n t could be avoided i f the patient p e r ceived personal space invasion as h e l p f u l . Methods o f Studying Personal Space Methods of studying personal space varied from f i e l d studies t o paper and pencil t e s t s . Duke and Nowicki (1972) developed a tool which they c a l l e d the Comfortable Interpersonal Distance Scale (CID) (Appendix A ) . This was a paper and pencil t e s t . The scale had a c i r c l e with e i g h t l i n e s emanating from a common p o i n t . meter radius was numbered randomly. could be measured i n m i l l i m e t e r s . Each 80 m i l l i Any l o c a t i o n on a given radius Typical instructions asked the sub j e c t s to imagine themselves a t the center o f the diagram. Subjects were then asked t o respond t o imaginary persons approaching them along a p a r t i c u l a r radius by marking on the l i n e where they would l i k e t h a t p a r t i c u l a r person t o stop. The subjects were asked t o have the person stop when the subjects thought they might begin to f e e l uncomfortable with that person's closeness. Duke and Nowicki (1972) conducted t e s t - r e t e s t r e l i a b i l i t y using 23 male and 21 female a d u l t s , 61 male and 41 female high school stu dents and 67 male and 84 female elementary school students. The sub j e c t s were asked t o respond t o the CID two weeks a f t e r i n i t i a l administration. The correlations ranged from 168 t o . 8 6 f o r the a d u l t and high school subjects and from .39 t o . 5 0 f o r the elementary subjects. Correlations o f the CID with the Marlowe-Crowne Social D e s i r a b i l i t y Test ranged from .03 t o .18 indicating that subjects were not responding i n a way deemed s o c i a l l y d e s i r a b l e . Veitch, Getsinger, and Arkelian (1976) performed a t e s t - r e t e s t r e l i a b i l i t y study o f the CID with 15 male and 14 female college students. A c o r r e l a t i o n of . 9 5 was found a f t e r an i n t e r v a l o f 16 months. Construct v a l i d i t y o f the CID was measured by. comparing the responses to stimuli with actual preferred distances i n response t o p a r a l l e l real l i f e s t i m u l i . Martin (1972) found correlations o f .65 to .71 i n 26 male and 27 female college students. Johnson (1972) 18 reported correlations o f .83 t o .84 between CID responses and actual approaches i n a sample o f black college students. Duke and Kiebach (1974) used the CID and real l i f e s t i m u l i with 10 male and 10 female college students and these correlations ranged from .52 t o . 7 6 . Veitch e t a l . (1976) assessed the v a l i d i t y o f the CID by com paring responses t o the CID with responses t o other measures. The l i t e r a t u r e suggested t o Veitch e t a l . that females preferred smaller personal space zones than males. Responses t o the CID a l s o demon strated smaller personal space preferences by females. Significant p o s i t i v e correlations were found between authoritarianism and i n t e r personal distancing which was consistent with previous findings. White and L i r a (1978) assessed concurrent v a l i d i t y by comparing the CID with the Peterson Personal Space Measure (PPSM). were 26 male and 17 female adolescents. The subjects They found that both t e s t s demonstrated acceptable l e v e l s o f r e l i a b i l i t y , p r e d i c t i v e v a l i d i t y , and concurrent v a l i d i t y . The CID was found to be quicker t o administer, more e a s i l y understood and did not present incongruence between stimulus appearance and subject imagery. The above suggested that the CID was an appropriate scale t o use i n research on interpersonal distance. Evans and Howard (1973) noted that the CID consistently demonstrated accuracy i n measuring relationships between interpersonal distance and ( a ) race o f the i n t e r a c t a n t s , (b) developmental and sex v a r i a b l e s , (c) a f f i n i t y , and (d) personality v a r i a b l e s . 19 Summary Personal space i s a highly individual phenomenon a f f e c t e d by c u l t u r e , age, sex, social p o s i t i o n , and circumstances. The s t a t e of an i n d i v i d u a l ' s health may a f f e c t perception o f personal space. Invasion o f personal space increases anxiety i n people who a r e i n mental i n s t i t u t i o n s , residents o f nursing homes, o r who a r e c l i e n t s in libraries. Health care workers have observed that respiratory patients appear to require more personal space during dyspneic periods. No studies have been conducted to v e r i f y such observations. Several tools have been developed t o measure personal space. The Comfortable Interpersonal Distance Scale (CID) developed by Duke and Nowicki (1972) has been found t o be psychometrically sound. The CID i s a v a l i d and r e l i a b l e tool when used with a wide age range i n varied settings and with c u l t u r a l l y diverse subjects. CHAPTER 3 RESEARCH METHODOLOGY This chapter o u t l i n e s the design, sample s e t t i n g , t o o l s , and s t a t i s t i c a l analyses used. The study was conducted i n an attempt t o describe the perceptions o f personal space of chronic respiratory patients. The e f f e c t o f family members on personal space was compared t o the e f f e c t o f nurses on personal space when subjects were breathing comfortably and when subjects were experiencing dyspnea. Protection o f Human Subjects Permission t o use human subjects f o r the study was granted by the College o f Nursing Ethical Review Subcommittee (Appendix B ) . A disclaimer (Appendix C) was used t o obtain consent from the subjects. Setting and Sample An ambulatory pulmonary care u n i t was used t o obtain subjects. The f a c i l i t y was located a t a u n i v e r s i t y i n an urban southwestern commu nity. The f a c i l i t y served c l i e n t s regardless of race, r e l i g i o n , or national o r i g i n . Verbal permission t o approach c l i n i c c l i e n t s was granted by the medical d i r e c t o r . The t a r g e t population included c l i e n t s from selected c l i n i c who met the following c r i t e r i a : 1. F i f t y - f i v e years o f age and o l d e r , 20 2. Able t o communicate i n oral and w r i t t e n English, 3. Had chronic respiratory disease confirmed by a physician, k. Had experienced episodes o f dyspnea r e l a t e d t o t h e i r respiratory disease. A convenience sample of 30 subjects was used f o r t h i s study. Data Collection Tools Demographic information describing each subject was c o l l a t e d on the subject's p r o f i l e sheet (Appendix D ) . The information included age, sex, ethnic o r i g i n , how long the subject had lung disease, when the subject l a s t experienced a dyspneic episode, and how close subjects preferred others to approach when the subject was dyspneic. P a r a l l e l questionnaires, Reaction to Nursing Care Form A (Appendix E) and Form B (Appendix F) were developed by the i n v e s t i g a t o r . These were designed t o c o l l e c t data about f e e l i n g s subjects experienced when a nurse approached the subject's personal space. The question- 4 naires contained 11 forced choice L i k e r t type statements. Items f o r the questionnaires were obtained from the l i t e r a t u r e , observation o f c l i e n t s i n the pulmonary c l i n i c , and from health care workers i n the clinic. Several health care workers from the pulmonary c l i n i c were asked t o review the questionnaires f o r content and r e a d a b i l i t y . P a r a l l e l forms were developed to compare responses made when subjects were breathing normally with responses made when subjects were experi encing dyspnea. The Comfortable Interpersonal Distance Scale (CID) was used t o measure personal space. Permission to use the CID was granted by 22 Dr. M. P. Duke (Appendix G ) . The CID was a paper and pencil t e s t . Eight l i n e s r a d i a t e from a central p o i n t . was numbered randomly. Each 80 m i l l i m e t e r radius Any l o c a t i o n on a given radius could be mea sured. The Marlowe-Crowne Social D e s i r a b i l i t y Scale M-C (10) (Appendix H) adapted by Strahan and Gerbosi (1978) i s also a paper and pencil t e s t . The responses t o the Marlowe-Crowne scale w i l l be corre l a t e d with responses t o the Reaction t o Nursing Care instrument t o assess whether social d e s i r a b i l i t y was a f actor influencing responses. Data C o l l e c t i o n Protocol The subjects read the disclaimer, completed the subject p r o f i l e sheet, and Form A o f the Reaction t o Nursing Care. administered to the subjects four times. The CID was then The following instructions were given to subjects regarding the CID. Imagine the drawing you have been given i s a round room with eight doors, represented by the numbered boxes. Two people w i l l be described t o you who w i l l enter the room and walk towards you. Indicate the point on the l i n e a t which you f e e l uncomfortable with the closeness o f the person described. F i r s t imagine that you a r e facing the door number four and a close family member enters through door number four and walks toward you. Mark a spot on the l i n e leading from number four t o indicate the point a t which you would feel uncomfortable with that person's closeness. Imagine that you are s t i l l facing door number four and the same family member approaches you from each o f the doorways. Mark on each l i n e the point you would begin t o f e e l uncomfortable with that person's closeness. The instructions are repeated using a nurse unknown to the subject as the stimulus. Subjects were asked to respond t o the CID f o r a close family member and then the nurse when breathing normally. 23 The subjects were then asked t o think about how they f e l t when they were dyspneic when responding t o the CID. The close family member and an unknown nurse were again used as the s t i m u l i . Subjects were asked to continue thinking about being short o f breath while they responded to Form B o f the Reaction t o Nursing Care. L a s t l y , subjects were asked t o respond t o the Marl owe-Crowne Social D e s i r a b i l i t y Scale. They were t o l d that comfortable breathing or shortness o f breath were not factors t o consider while they responded t o t h i s l a s t questionnaire. Analysis o f Data Each radius was measured i n m i l l i m e t e r s and the mean of the sums o f the eight measures was used t o a r r i v e a t a single measure f o r each response t o the CID. question: A comparison of the numbers would answer the Does the personal space o f a chronic respiratory patient change i n s i z e during periods of dyspnea? Observation o f the shape o f the drawings made on the CID were used t o answer the question: I s the shape o f personal space i n the chronic respiratory p a t i e n t a l t e r e d by dyspnea? Comparisons were made of the distance marked on each radius during normal breathing and the percentage o f increase o r decrease marked on a l l r a d i i during periods of dyspnea. A two way analysis o f variance was I'snd t o compare the r e sponses o f subjects t o the approach of a close family member and an unknown nurse during normal breathing and periods o f dyspnea. Responses during nondyspneic and dyspneic states were recorded i n rows. Responses t o close family members and t o the unknown nurse were recorded i n columns. Paired t - t e s t s described the sources o f variance. The p a i r s were fami1y/nondyspneic with fami1y/dyspneic, nurse/nondyspneic with nurse/dyspneic, family/nondyspneic with nurse/nondyspneic, and family/dyspneic with nurse/dyspneic. Responses given on Form A and Form B o f the Reaction t o Nursing Care instrument (Appendices E and F) were assigned values. answers to each statement were: f e r e n t , agree and strongly agree. valued 5 , A, 3 , 2 , 1 . 3 , b , 5- Possible strongly disagree, disagree, i n d i f Answers t o p o s i t i v e statements were Answers t o negative statements were valued 1 , 2 , The negative statements on Form A were statements 2 , 5 , 11, and the negative statements on Form B were statements 2 , k , 5 , 7 , 8 , and 11. A score of 33 indicated that the subject f e l t i n d i f f e r e n t t o a l l the nursing actions described as there were eleven items on each form and the i n d i f f e r e n t choice was valued as t h r e e . Scores greater than 33 indicated that subjects perceived the nursing actions as i n vasive. Scores less than 33 indicated that subjects perceived nursing actions described as p o s i t i v e rather than invasive. Pearson Product Moment correlations were calculated between scores o f the MarloweCrowne Social D e s i r a b i l i t y Scale and Forms A and B o f the Reaction t o Nursing Care. This analysis was c a r r i e d out t o determine i f perceived social a c c e p t a b i l i t y o f responses a f f e c t e d the subject's choice o f answers to each statement on Forms A and B. Alpha c o e f f i c i e n t s were completed on responses t o Form A and Form B to determine the r e l i a b i l i t y of these two t e s t s . CHAPTER k PRESENTATION AND ANALYSIS OF DATA This chapter describes the c h a r a c t e r i s t i c s o f the sample. The findings and s t a t i s t i c a l analysis o f data a r e presented. The r e l i a b i l i t y and v a l i d i t y of new instruments used i n t h i s study a r e also discussed. Characteristics o f the Sample Seventeen male and seventeen female Caucasian subjects met the stated c r i t e r i a and were asked to p a r t i c i p a t e i n the study. male and fourteen females p a r t i c i p a t e d . Sixteen The average age o f the sub j e c t s was 68 .2 years with a range o f 55 t o 87 years. The mean age f o r men was 68 years and the mean age f o r women was 68.3 years. The h i s t o r y o f stated lung disease f o r each subject ranged from one year to 72 years, with a mean of 19 -6 years. The subjects experienced t h e i r l a s t period of dyspnea the day of data c o l l e c t i o n t o a period o f 730 days with a mean o f 101 days. by sex are presented i n Table 1 . 25 The c h a r a c t e r i s t i c s of the sample 26 Table 1 . Characteristics and D i s t r i b u t i o n of Subjects by Sex Range Age Male (N16) Mean SD* 68.06 55-87 Number o f years o f lung disease 3-40 13.8 Number o f days when l a s t e x p e r i enced dyspnea 0-730 81 Range Female (N14) Mean SD 8.5 59-81 68.3 6.7 13.1 1-72 26.2 26.6 1 82.A 0-730 123 241 "Standard deviation Analysis of Findings The m a j o r i t y of subjects marked symmetrical distances on each radius of the CID. Therefore the mean sum o f the eight measures on each CID was used t o obtain a single reading. Two way analysis of variance was used t o determine i f s i g n i f i c a n t differences existed be tween responses t o family members and nurses when the subject was nondyspneic and dyspneic. variance. Paired t - t e s t s determined the source of Responses to Form A and Form B of the Reaction t o Nursing Care instrument were recorded on L i k e r t type scales. considered to be i n t e r v a l d a t a . The scores were Correlations were calculated between r e s u l t s of the Marl owe-Crowne Social D e s i r a b i l i t y Scale and both forms of the Reaction t o Nursing Care Instrument. 27 Findings Related t o Study Questions The findings i n r e l a t i o n t o each o f the f i v e questions were as follows: 1. Does the personal space o f the chronic respiratory p a t i e n t change i n s i z e during dyspnea? Twenty subjects o r 66.6% o f the sample showed an increase i n s i z e o f personal space when responses made t o the CID during nondyspneic periods were compared t o responses t o the CID during periods o f dyspnea. Six subjects o r 20% o f the sample showed a decrease i n s i z e o f personal space during periods o f dyspnea when compared t o periods o f nondyspnea. Four subjects o r 13.3% o f the sample indicated no change i n the s i z e o f personal space between p e r i ods of dyspnea and nondyspnea. 2. I s the shape o f personal space a l t e r e d by dyspnea? Analysis o f the shapes was not done as subjects drew symmetrical shapes during dyspneic and nondyspneic s t a t e s . Twenty-three of the subjects or 76.6% of the sample drew c i r c u l a r shapes on the CID indicating an equal amount o f space was required i n a l l directions around the body. None o f the subjects indicated a l a r g e r space was required in f r o n t . Seven subjects or 23.3% o f the sample indicated a l a r g e r space was required t o the rear than was required t o the sides o r i n f r o n t . o f these subjects were women. All Two subjects stated t h a t t h e i r f a m i l i e s were trained t o speak t o the subject before approaching from the rear t o avoid s t a r t l i n g the subject. 3. Does the personal space of the chronic respiratory p a t i e n t d i f f e r when approached by a close family member and by an unknown nurse when the subject i s breathing normally or experiencing dyspnea? 28 k. Does personal space change due t o an i n t e r a c t i o n between the type of person approaching the subject and the dyspneic: o r nondyspneic s t a t e o f the subject? A s i g n i f i c a n t d i f f e r e n c e a t the .04 l e v e l was found when sub j e c t responses during dyspnea and nondyspnea were compared between family members and nurses. This difference indicated t h a t the subjects preferred people to stay a s i g n i f i c a n t l y greater distance away when they were dyspneic than when nondyspneic. A s i g n i f i c a n t difference a t the .01 l e v e l was found when the responses t o the approach o f the family member were compared with responses to the approach o f the un known nurse. This indicated that the subjects preferred having the family member closer than the nurse. There was no i n t e r a c t i o n between the type o f person approaching the p a t i e n t and the dyspneic o r non dyspneic s t a t e of the subject. This lack o f i n t e r a c t i o n indicated that most explained variance i n CID scores can be accounted f o r by the main e f f e c t s o f dyspnea/nondyspnea and family/nurse. Table 2 presents the r e s u l t s o f the analysis of variance between the type of person approaching the subject, i . e . , close family member or unknown nurse and the subject's physical s t a t e , i . e . , nondyspneic or dyspneic. 29 Table 2 . Two Way Analysis o f Approaches t o Dyspneic and Nondyspneic Subjects Source df SS 119 35508.99167 Dyspnea/Nondyspnea 1 Fami1y/Nurse Interaction Total Error F Significance 1197.00833 4.24524 .041 1 1591.40833 5.64400 .019 1 12.67500 0.04495 1.000 116 32707.90000 Paired t - t e s t s were also performed on the d a t a . were: - - The p a i r s (1) family/subject dyspneic with fami1y/subject nondyspneic, (2) nurse/subject nondyspneic with nurse/subject dyspneic, ( 3 ) nurse/ subject nondyspneic with family/subject nondyspneic, (*0 nurse/subject dyspneic with fami1y/subject dyspneic. Significance was found with each o f the p a i r s . The result s of the paired t - t e s t s confirmed the r e s u l t s obtained from the two way analysis o f variance, when dyspneic subjects preferred a l l people t o stay f u r t h e r away than when the subject was nondyspneic. Subjects preferred the family member closer than the nurse whether the subject was nondyspneic or dyspneic. pai red t - t e s t s . Table 3 shows the r e s u l t s o f the 30 Table 3• Paired T - t e s t s o f Approaches during Nondyspneic and Dyspneic States Variable Mean Standard Deviation Fam i1y/Nondyspne i c 9-47 13.64 Fami1y/Dyspneic 17-40 17.55 Nurse/Nondyspneic 16.A3 15.05 Nurse/Dyspnei c 23.07 20.18 9.47 13.64 Nu rse/Nondyspne i c 16.43 15-05 Fami1y/Dyspne i c 17.40 17.55 Nurse/Dyspneic 23.07 20.18 Fami1y/Nondyspneic 5. df Significance Level 29 .001 29 .039 29 .002 29 .039 Are actions o f the nurse perceived as invasions o f personal space by chronic respi ratory patients when dyspneic or nondyspneic? The p a r a l l e l Forms A and B o f the Reaction t o Nursing Care (Appen dices E and F) were used t o answer t h i s question. tered when subjects were breathing normally. Form A was adminis Form B was answered by the subjects as i f they were experiencing dyspnea. The range o f scores obtained on Form A was 24-44. score was 33 and a standard deviation of 4 . 6 0 . The mean Scores less than 33 indicate t h a t subjects perceive nursing actions as p o s i t i v e rather than invasive. Scores o f 33 indicate that subjects f e e l i n d i f f e r e n t to nursing actions and scores greater than 33 indicate that subjects perceived nursing actions as negative or invasive. On Form A eleven subjects scored less than 33» four scored 33 and 15 scored more than 33. The range o f scores on Form B was 20-36 with a mean o f 31-16 and a standard deviation o f 3•71• There was a s l i g h t l y more p o s i t i v e response t o nursing actions when subjects were dyspneic than when nondyspneic. A paired t - t e s t was done between Form A and Form B. Although the mean scores appeared t o be s i m i l a r , there was a s t a t i s t i c a l d i f f e r e n c e between them. Table presents the result s of the paired t - t e s t between Form A and Form B. Table 4 . Form A and Form B Paired T - t e s t Standard Deviation Variable Range Mean Form A 24-W 33-00 A.60 Form B 20-36 31.16 3-71 df Significance Level 29 .026 R e l i a b i l i t y and V a l i d i t y Testing o f Form A and Form B o f Reaction t o Nursing Care Forms A and B o f the Reaction t o Nursing Care were developed by the i n v e s t i g a t o r . The purpose o f these instruments was t o measure r e sponses t o nursing actions which intrude on personal space. Parallel forms were used t o compare nondyspneic responses with dyspneic responses. R e l i a b i l i t y testing f o r internal consistency o f the two forms was performed using alpha c o e f f i c i e n t s . Nunnally (1978) stated that alpha c o e f f i c i e n t s o f . 7 0 or higher are preferred f o r new t o o l s . t o item c o r r e l a t i o n analysis was calculated. Item The c r i t e r i o n f o r item 32 t o item analysis was set a t correlations between . 3 0 t o . 7 0 . This c r i t e r i o n indicated that items a r e from the same domain y e t were nonredundant. Form A Reaction t o Nursing Care showed a range o f - . 0 7 t o . 7 0 between the items. Forty percent o f the items were found t o c o r r e l a t e . The standardized alpha c o e f f i c i e n t was found t o be . 6 0 7 . Reaction t o Nursing Care showed a range o f - . 0 1 t o . 9 2 . percent of the items were found t o c o r r e l a t e . was found t o be . 3 9 6 . correlations. Form B Twenty-three The standardized alpha Table 5 provides a summary o f the item t o item I n addition Appendices I and J provide complete item t o item c o r r e l a t i o n matrices f o r reaction t o nursing care which intrudes on personal space. Table 5- Summary Item t o Item Correlations f o r R e l i a b i l i t y Analysis o f Form A and Form B Range Item t o Item Correlation Tool s Number of Items Correlated Form A -.07 to .70 22 o f 55 Form B - . 0 1 t o .92 13 o f 55 0% 23.6% Standardized Alpha Coefficient .607 • 396 Review of the c o r r e l a t i o n matrices indicated that deleting e i t h e r items 2 or 5 from Form A would elevate the alpha t o .7^ i n each instance. Deleting e i t h e r items 3 , 8 , or 9 from Form B would increase the alpha to . ^5. statements. Item 5 on Form A and item 3 on Form B a r e p a r a l l e l The alpha values indicated a moderate c o r r e l a t i o n between the items used. Alpha values a l s o indicated that items may have functioned d i f f e r e n t l y on Form B when the subject was dyspneic than they functioned on Form A when the subject was nondyspneic. Pearson product moment correlations were performed between the Marlowe Crowne Social D e s i r a b i l i t y Scale and Forms A and B o f the Reaction to Nursing Care instrument. The V measured f o r Form A was .004 (p >.98) and f o r Form B was - . 1 6 (p > . k ) . These result s i n d i cated t h a t social d e s i r a b i l i t y had a n e g l i g i b l e e f f e c t on subjects' responses t o the instrument. CHAPTER 5 CONCLUSIONS, IMPLICATIONS AND RECOMMENDATIONS FOR FURTHER STUDY This chapter presents the conclusions o f the study. tions o f the conclusions f o r nursing care are o u t l i n e d . Implica Recommendations f o r f u r t h e r study are l i s t e d . Findings i n Relation to Conceptual Framework The conceptual framework of t h i s study was based on theories o f personal space. Personal space i s a moveable t e r r i t o r y surrounding an i n d i v i d u a l , over which the individual attempts to maintain c o n t r o l . Lyman and Scott (1967) stated that maintaining control o f personal space was a fundamental human a c t i v i t y . Sommer (1959) described p e r sonal space as an i n v i s i b l e boundary surrounding a person's body, into which others may not intrude. Several researchers (Altman, 1976; Fisher and Byrne, 1975; Geden and Begeman, 1981) have found that the size of personal space i s a f f e c t e d by the i n d i v i d u a l ' s view o f s e l f w i t h i n the s p e c i f i c environment. How the individual viewed the person approaching him also a f f e c t e d the size o f personal space ( G o t t h e i l , Cory, and Parades, 1968; Guardo, 1976; O'Neal e t a l . , 1979)• In t h i s study the shape and size o f personal space o f the chronic respiratory p a t i e n t was measured using the Comfortable I n t e r personal Distance Scale (Duke and Nowicki, 1972). 3*4 Responses o f the subjects indicated t h a t greater personal space was needed during periods o f dyspnea than was needed during nondyspneic breathing. The subjects indicated a smaller personal space when approached by a family member than when approached by an unknown nurse. The observation t h a t the family members could approach closer than the nurse was seen whether the subject was nondyspneic or dyspneic. A small percentage o f subjects indicated that the nurse could approach closer than the family member could during periods o f dyspnea. The subjects who allowed the nurse t o be closer also indicated that the nurse would help a l l e v i a t e the dyspnea. The shape o f personal space i s r e l a t i v e l y constant (Sommer, 1959)• In t h i s study the shape o f personal space o f a l l subjects r e mained constant whether the subject was dyspneic o r nondyspneic. The s i z e of the personal space increased o r decreased depending on i n d i v i d ual changes w i t h i n the subject. The s i z e also changed depending on the i d e n t i t y o f the individual approaching the subject. Behavioral changes r e s u l t from invasion o f personal space (Dosey and Meisels, 1969; F e l i p e and Sommer, 1966). Reactions t o i n vasion may cause the subject to f e e l comfortable o r uncomfortable. Invasion o f personal space frequently occurs when nurses administer care t o p a t i e n t s . P a r a l l e l forms o f a Reaction t o Nursing Care were used to investigate the chronic respiratory p a t i e n t ' s response t o i n vasive nursing actions. Trends i n the data suggest that nursing actions which invade personal space a r e viewed with indifference or as nonsupportive when the subject was breathing comfortably. Similar actions a r e viewed with less indifference and as more supportive when the subject was dyspneic. The low alpha and lack o f consistency w i t h i n the questionnaires necessitates caution when considering these conclus ions. Findings i n Relation t o the L i t e r a t u r e Geden and Begemen (1981) i n t h e i r study o f personal space found that adults preferred t o have family members closer t o them. Their subjects placed nurses' figures a t a distance f a r t h e r away from s e l f than they placed family member f i g u r e s . the present study. This finding was r e f l e c t e d i n Subjects indicated they preferred the nurse t o stay s i g n i f i c a n t l y f u r t h e r away than a close family member. This preference occurred when the subject was dyspneic and when the subject was breathing comfortably. Dyspnea a l t e r e d personal space by increasing the amount o f space subjects wanted around them when they were dyspneic. The need f o r g r e a t e r personal space during dyspnea may be r e f l e c t e d i n Kent and Smith's (1977) description o f the claustrophia experienced by r e s p i r a tory patients in acute d i s t r e s s . Traver's (1983) anecdotal observa tions indicated t h a t during dyspneic episodes having strangers too close increased the p a t i e n t ' s anxiety and respiratory discomfort. The m a j o r i t y o f the subjects i n t h i s study required an equal amount of space i n a l l d i r e c t i o n s . This finding varies with what Louis (1981) found with a s i m i l a r age group o f subjects i n a residence f o r the e l d e r l y . She found that her subjects desired a smaller face t o face distance than was desired along other parameters. Louis hypoth esized that smaller face t o face distance was due t o decreased perceptual acuity o f her population. The subjects i n the present study were c l i n i c outpatients l i v i n g i n t h e i r own homes. Perceptual a c u i t y may be reduced i n the present subjects, but having r e s p i r a t o r y disease may i n t e r f e r e with allowing a closer approach t o accommodate perceptual deficits. Therefore these subjects indicated a desire t o have others approach an equal distance on a l l parameters, rather than allowing a closer approach on the face t o face radius. The d i f f e r e n t l i f e s t y l e s o f the subjects may account f o r the v a r i a t i o n i n personal space between the two groups. Barstow (197^0 found t h a t chronic r e s p i r a t o r y patients engaged i n attempts t o decrease the impact o f t h e i r symptoms on o t h e r ' s personal space. One technique used by her subjects was t o withdraw from others. The need t o have greater space between s e l f and others during dyspneic periods may r e f l e c t a withdrawal from others. Several subjects when completing the Comfortable Interpersonal Distance Scale stated they removed themselves from others so others would not be disturbed by t h e i r symptoms. Implications f o r Nursing Chronic respiratory patients preferred t o have family members closer than unknown nurses during dyspneic and nondyspneic s i t u a t i o n s . Nursing actions which brought the nurse closer t o the p a t i e n t were t o l e r a t e d because the action a l l e v i a t e d d i s t r e s s . Several subjects commented that as long as the nurse helped the subject t o breathe b e t t e r i t d i d n ' t matter how close she was. Nursing actions which did not a l l e v i a t e respiratory d i s t r e s s during dyspnea were viewed nega tively. 38 Subjects were asked t o react t o the p o s i t i o n a nurse assumed during an interview when the subject was dyspneic. The subjects focused on the idea o f " i n t e r v i e w" rather than on the nurse's p o s i t i o n . Many stated that they d i d n ' t want someone interviewing them when they were short o f breath. The nurse caring f o r respiratory patients needs t o be able t o quickly and e f f e c t i v e l y assess the p a t i e n t and i n s t i t u t e measures t o a l l e v i a t e respiratory d i s t r e s s . The chronic respiratory p a t i e n t w i l l allow the nurse who i s perceived t o be h e l p f u l t o come closer. The nurse who i s thoroughly p r o f i c i e n t i n techniques t o r e l i e v e distress and who works a t developing the p a t i e n t ' s t r u s t w i l l be welcomed. The p a t i e n t ' s perception o f which nurse i s most h e l p f u l to the p a t i e n t should be considered when assignments a r e made. A skillful nurse who i s assigned t o a p a t i e n t who perceives that nurse as nonhelpf u l w i l l increase the p a t i e n t ' s d i s t r e s s . The p a t i e n t has not developed t r u s t i n that nurse, therefore h i s anxiety w i l l not be relieved and h i s dyspnea continues due t o a n x i e t y . The respiratory p a t i e n t prefers having the family member c l o s e r , therefore nurses need t o support family members' attempts t o help the chronic respiratory p a t i e n t . Incorporating the family member i n p a t i e n t teaching promotes the family member as h e l p e r . Teaching family members those a c t i v i t i e s which a l l e v i a t e symptoms, and which the family a r e w i l l i n g t o implement recognizes the subject's need f o r closeness from family members. The tendency to maintain distance between s e l f and others i n order to decrease the e f f e c t symptoms have on others i s a p a t i e n t behavior nurses need to recognize. Providing adequate privacy so that the p a t i e n t i s not aware o f the presence o f others during dyspneic episodes i s h e l p f u l to the p a t i e n t . Discrete disposal o f sputum cups and paper tissues a f t e r the p a t i e n t i s finished with them also m i n i mizes a t t e n t i o n t o the p a t i e n t ' s symptoms. The d i f f e r e n t responses t o the p a r a l l e l forms o f Reaction t o Nursing Care may indicate t h a t chronic respiratory patients respond d i f f e r e n t l y t o nursing actions when they a r e dyspneic. Nurses who develop a r e l a t i o n s h i p with a nondyspneic p a t i e n t may have t o reassess that r e l a t i o n s h i p when the p a t i e n t i s dyspneic. A nursing action which the p a t i e n t accepted when nondyspneic may be t o t a l l y unacceptable when the p a t i e n t i s dyspneic. L imi t a t ions Most o f the subjects were breathing comfortably so that the questionnaire and the Comfortable Interpersonal Distance Scale were completed r e t r o s p e c t i v e l y . The few who were experiencing dyspnea f i l l e d i n the f i r s t questionnaire and the CID r e l a t i n g t o nondyspneic state retrospectively. The majority of the interviews were conducted i n examining rooms o f the outpatient c l i n i c . member was frequently present. The spouse o r another close family The presence o f the spouse may have a f f e c t e d the subject's willingness t o accurately s t a t e how close he wanted family members t o approach when he was dyspneic. R e l i a b i l i t y o f both Form A and Form B o f the Reaction t o Nursing Care was a t a moderate l e v e l . Similar items function d i f f e r e n t l y on the two forms o f the instrument. For example: item six on Form A states: "During an interview I f e e l comfortable when the nurse s i t s d i r e c t l y i n f r o n t o f me so that our knees a r e only a couple o f inches a p a r t . " The p a r a l l e l statement on Form B, item ten states: "I f e e l comfortable i f the nurse s i t s i n a chair beside me when she i n t e r views me." When responding to the statement on Form A, the subjects reacted t o the nurse's p o s i t i o n . Several subjects stated i t d i d n ' t matter where the nurse sat during the interview. On Form B the sub j e c t s responded t o the idea of the nurse doing an interview when the subject was dyspneic. Several stated they d i d n ' t want t o be asked questions when they were short o f breath. The position assumed by the nurse was not commented upon. Areas f o r Further Study 1. Replication o f the design of the study using a l a r g e r sample o f subjects. 2. P a r t i a l r e p l i c a t i o n of the study with younger people who ex perience episodes o f acute dyspnea with no respiratory symptoms between dyspneic episodes. 3. Replication o f the study using subjects from an acute care s e t t i ng. 4. Replication o f the study using a nurse known to the subject as one o f the stimul i on the CID. 5- Exploration o f what chronic respiratory patients consider an intrusion o f space during dyspneic and nondyspneic s t a t e s . 6. Revision o f Form A and Form B of the Reaction t o Nursing Care tools t o improve v a l i d i t y and r e l i a b i l i t y . Replication o f the study when subjects a r e a c t u a l l y dyspneic and nondyspneic. Exploration o f s e r i a l responses t o the CID when subjects experience d i f f e r e n t degrees o f dyspnea. APPENDIX A COMFORTABLE INTERPERSONAL DISTANCE SCALE Number Duke, M. P . and N o w i c k i , S. A . , "A New Measure and Social Learning Model f o r Interpersonal D i s t a n c e , " Journal o f Experimental Research i n P e r s o n a l i t y , 6 : 1 9 7 2 , p p . 119-132. k2 APPENDIX B HUMAN SUBJECTS APPROVAL THE UNIVERSITY OF ARIZONA COLLEGE OF N~ SING MEMORANDUH TO: Laveena Gittins College of Nursing PhD ,1~ FRaq : Ada Sue Hinshaw, RN, Director of Research DATE: October 31, 1983 RE: Human Subjects Review: ~rv Katherine J. Young, RN, PhD Chairman, Research Committee Personal Space and the Dyspneic Patient Your project has been reviewed and approved as exempt from University review by the College of Nursing Ethical Review Sub-committee of the Research Committee and the Director of Research. A consent form with subject sianature is not required for projects exempt from full University review. Please use only a disclaimer format for subjects to read before givinq their oral consent to the research. The Human Subjects Project Approval Form is filed in the office of the Director of Research if you need access to it. We wish you a valuable and stimulating experience with your research. ASH/fp 43 APPENDIX C DISCLAIMER PERSONAL SPACE AND THE DYSPNEIC PATIENT The purpose o f t h i s study i s to c o l l e c t information about how shortness o f breath a f f e c t s personal space and how people with short ness o f breath f e e l about invasion o f personal space. The information may help nurses b e t t e r understand respiratory p a t i e n t s and improve patient care. You a r e being asked to p a r t i c i p a t e v o l u n t a r i l y i n t h i s study. Completion o f the three questionnaires and the comfortable i n t e r personal distance tool indicates your consent and willingness t o p a r t i c i p a t e in the study. There a r e no costs o r r i s k s t o you i n your p a r t i c i p a t i o n . The investigator w i l l be a v a i l a b l e t o answer any questions you may have while you are completing the instrument. Ans wering the questionnaires and f i l l i n g i n the Comfortable Interpersonal Distance Scale w i l l take approximately 15 minutes. You may withdraw from the study a t any time. A l l information c o l l e c t e d during t h i s study w i l l be kept c o n f i d e n t i a l . Your name w i l l be known only to the investigator and w i l l not appear on the information gathering sheets. Whether you decide to p a r t i c i p a t e or not w i l l not a f f e c t your c a r e . A l l r e s u l t s w i l l be grouped. I f the r e s u l t s o f t h i s study are published, you can be assured that you w i l l not be i d e n t i f i e d by name. A summary o f r e s u l t s o f t h i s study w i l l be provided upon request. I f you have any questions regarding t h i s study, please feel f r e e t o contact the investigator a t the address below. Thank you f o r your p a r t i c i p a t i o n i n t h i s study. Laveena A. G i t t i n s , B.S.N. 1553 E. Prince Road Tucson, AZ 85719 325-9584 APPENDIX D SUBJECT PROFILE Subject number Age Ethnic o r i g i n Sex Number o f years have had lung disease How long ago did you have your l a s t period o f shortness of breath? How close do you feel comfortable having people approach you when you are short o f breath? 45 APPENDIX E REACTION TO NURSING CARE—FORM A After each of the following statements, indicate if you strongly disagree (SO), diagree (0), are indifferent (I), agree (A), or strongly agree (SA) with the statement by marking the appropriate box. SO I FEEL COMFORTABLE' WHEN THE NURSE STANDS BESIDE HE AND PLACES HER ARM ACROSS MY SHOULDERS WHEN TALKING TO ME. 2. I FEEL UNCOMFORTABLE WHEN I'H ON THE EXAMINING TABLE ANO THE NURSE LEANS ACROSS ME TO REACH THE BLOOD PRESSURE APPARATUS ON THE OPPOSITE SIDE OF THE EXAM I NING TABLE. 3- I FEEL COMFORTABLE WHEN THE NURSE STANDS IN FRONT OF ME AND PLACES HER HANOS ON EITHER SIDE OF MY CHEST TO HELP ME CONTROL MY BREATHING. <1. WHEN I'M SHORT OF BREATH ANO LYING ON THE EXAMINING TABLE, I FEEL COMFORTABLE WITH THE CURTAINS DRAWN AROUND ME. 5. WHEN I'M SHORT OF BREATH, I FEEL UNCOMFORTABLE IF THE NURSE STANDS DIRECTLY IN FRONT OF ME WHEN SHE USES A STETHOSCOPE TO LISTEN TO MY CHEST. 6. DURING AN INTERVIEW I FEEL COMFORTABLE WHEN THE NURSE SITS DIRECTLY IN FRONT OF ME SO THAT OUR KNEES ARE ONLY A COUPLE OF INCHES APART. 7. I FEEL COMFORTABLE IF THE NURSE STANDS BEHIND ME AND PLACES HER HANDS ON EITHER SIDE OF MY CHEST TO HELP ME CONTROL MY BREATHING. 8. WHEN I AM SHORT OF BREATH, I FEEL C0MF0RTA8LE IF THE NURSE STANDS BESIDE ME TO LISTEN TO MY CHEST WITH A STETHOSCOPE. 9. WHEN I AM SHORT OF BREATH, IT DOESN'T BOTHER ME IF THE NURSE LEANS CLOSE TO ME AND I FEEL HER BREATH ON MY FACE WHEN SHE ASKS A QUESTION. 10. WHEN I AH SHORT OF BREATH, I FEEL COMFORTABLE IF THE NURSE LEANS TOWARDS ME ANO PLACES BOTH HANOS ON MY ARMS WHILE SHE EXPLAINS SOMETHING TO ME. II. I FEEL UNCOMFORTABLE IF THE NURSE SITS BESIOE ME AND ACCIOENTLY TOUCHES MY ARM OR LEG WHILE WE ARE TALKING. 46 SA APPENDIX F REACTION TO NURSING CARE—FORM B In the following situations, when you are feeling short of breath indicate whether you strongly agree (SA), agree (A), are indifferent (I), disagree (D), or strongly disagree (SD) with the statement. SD 1 FEEL COMFORTED WHEN THE NURSE APPROACHES ME FROM THE SIDE AND PLACES AN ARM AROUND MY SHOULDERS WHILE SPEAKING TO ME. 1 FEEL UNCOMFORTABLE WHEN THE NURSE STANDS CLOSE TO ME AND 1 FEEL HER BREATH ON MY FACE WHEN SHE TALKS TO ME. 1 FEEL COMFORTABLE I F THE NURSE STOPS ABOUT A FOOT IN FRONT OF ME AND THEN ASKS QUESTIONS OF ME. 1 FEEL MORE SHORT OF BREATH I F THE NURSE STANDS DIRECTLY IN FRONT OF ME WHILE LISTENING TO MY CHEST WITH A STETHOSCOPE. 1 FEEL UNEASY IF THE NURSE PLACES HER CHAIR SO CLOSE TO ME HER KNEES ARE ONLY A COUPLE OF INCHES FROM MY KNEES. 1 FEEL COMFORTABLE I F THE NURSE STANDS BESIOE ME WHILE LISTENING TO MY CHEST WITH A STETHOSCOPE. 1 FEEL UNEASY I F THE NURSE STANDS IN FRONT OF ME AND PLACES HER HANDS ON MY RIB CAGE TO HELP ME LEARN A NEW BREATHING PATTERN, 1 FEEL MORE SHORT OF BREATH WHEN THE CURTAINS ARE DRAWN AROUND ME WHILE I ' M ON THE EXAMINING TABLE. 1 FEEL COMFORTABLE I F THE NURSE STANDS BEHIND ME AND PLACES HER HANDS ON MY RIB CAGE TO HELP ME LEARN NEW BREATHING PATTERNS. 1 FEEL COMFORTABLE I F THE NURSE SITS I N A CHAIR BESIDE ME WHEN SHE INTERVIEWS ME. 1 FEEL UNEASY WHEN THE NURSE REACHES ACROSS MY CHEST TO OBTAIN THE BLOOD PRESSURE CUFF WHEN I ' M LYING ON THE EXAMINING TABLE. 47 D 1 A SA APPENDIX G AUTHOR'S PERMISSION TO USE THE CID EMORY UNIVERSITY ATLANTA. GIORCIA 30322 TMC PSYCHOLOGICAL CENTCR OF THL DEPARTMENT OF PSYCHOLOGY September 23, 1983 Dear Ms. G i t t i n s : Thank you f o r your i n t e r e s t in the CID. i n s t r u c t i o n s f o r a d m i n i s t e r i n g and s c o r i n g . use t h e CID and reproduce i t as needed. I ' v e enclosed some Please feel free to Your h y p o t h e s i s r e g a r d i n g space as a f u n c t i o n o f b r e a t h i n g d i f f i c u l t y i s i n t r i g u i n g . l o v e t o know how i t comes o u t . I'm sorry but I'd I have no i n f o r m a t i o n regarding r e l i a b i l i t y and v a l i d i t y o f CID i n s i t u a t i o n s o f a l t e r e d conditions. I would assume, however, t h a t t h i s could be seen as another type o f s t r u c t i o n a l v a r i a b l e which can have an e f f e c t on d i s t a n c e s c o r e s . Good l u c k i n your research P r o f e s s o r o f Psychology A8 APPENDIX H MARLOWE-CROWNE SOCIAL DESIRABILITY SCALE M-C1 ( 1 0 ) * Listed below are statements concerning personal a t t i t u d e s and t r a i t s . Indicate i n the space provided whether the statement i s T ( t r u e ) or F ( f a l s e ) as i t pertains t o you personally. 1. I HAVE NEVER BEEN IRKED WHEN PEOPLE EXPRESSED IDEAS VERY DIFFERENT FROM MY OWN. 2. I SOMETIMES TRY TO GET EVEN RATHER THAN FORGIVE AND FORGET. 3. THERE HAVE BEEN OCCASIONS WHEN I TOOK ADVANTAGE OF SOMEONE. k. I HAVE NEVER DELIBERATELY SAID SOMETHING THAT HURT SOMEONE'S FEELINGS. 5. I AM ALWAYS WILLING TO ADMIT I T WHEN I MAKE A MISTAKE. 6. THERE HAVE BEEN OCCASIONS WHEN I FELT LIKE SMASHING THINGS. 7. I NEVER RESENT BEING ASKED TO RETURN A FAVOR. 8. I ALWAYS TRY TO PRACTICE WHAT I PREACH. 9. I LIKE TO GOSSIP AT TIMES. 10. AT TIMES I HAVE REALLY INSISTED ON HAVING THINGS MY OWN WAY. "Adapted from Strahan, R. and Gerbosi, K. C. Short homogeneous versions o f the Marlowe Crowne Social D e s i r a b i l i t y Scale. Journal of C I i n i c a l Psychology, 28, 1978, p . 192. 49 APPENDIX I COVARIANCE MATRIX—FORM A 50 Covariance Matrix o f Form A o f the Reaction t o Nursing Care Instrument It e m Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 Item 8 Item 9 1 1.2368 2 -.1356 .5161 3 • 3103 .0690 .8276 4 .2713 -.2046 .2414 .6161 5 -.0598 .1333 -.1379 -.1977 .4644 6 .3356 -.3057 .2414 .2667 -.2230 .5333 7 .2690 -.1630 .5517 .3379 -.3310 .4000 .8517 8 .0874 -.2161 • 3103 .2943 -.3126 .2782 .5448 .7540 9 .2437 -.0529 • 3103 .0713 -.0736 .1770 .2621 .1287 1.0161 10 .4368 -.2356 .4138 .3333 -.3563 .5287 .5690 .4253 .4713 11 .2621 .1276 .0690 -.0828 .1310 -.0621 -.0724 -.1862 .1103 1 Item 0 vn APPENDIX J COVARIANCE MATRIX—FORM B 52 Covariance Matrix o f Form B o f the Reaction t o Nursing Care Instrument 1 tem 2 1 tem 3 1 tem 4 1 tem 5 1 tem 6 1 tem 7 1 tem 8 1 tem 9 1 tem 10 1 tem 1 tem 1 1 1.172*» 2 -.2759 1 .1034 3 .1724 -.2069 • 9207 4 -.0345 .3448 0.2172 .6448 5 -.0345 .5862 0.0483 .4345 .7402 6 .6552 0.3448 • 0759 -.0966 -.1747 .6851 7 -.1724 .4483 -.1310 .2483 .4115 -.1770 .9609 8 -.3793 • 3103 0 .1034 .1954 -.3333 .2529 • 9885 9 .4483 -.2759 .2448 -.2034 -.3172 .5034 -.4966 -.4833 .9759 10 .4138 0 -.0724 -.0379 -.0161 .3126 -.1356 -.2644 .4724 .6540 11 .1724 .1724 .1172 .0828 .3517 -.1241 .2552 .3448 -.3379 -.2138 VI REFERENCES Agle, D. 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