r t u P C HAPTER S IXTEEN Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists Mary Pat Moeller and Brenda Schick Introduction Communication requires more than knowledge of grammar and the world; it also entails our understanding of social interaction. A key element contributing to communicative success is people knowledge; that is, the ability to predict or explain others’ behaviors with reference to what others are thinking, believing or feeling. Social reasoning ability often is called mindreading or theory of mind (see Astington 1993). In general, it refers to our ability to make sense of events around us by predicting or explaining behavior based on the mental states of others and ourselves. As an example, one of the authors was driving to work recently and noticed a couple holding hands and solemnly looking at a small garden plot on the side of their home. Upon seeing this, the author speculated that the couple recently buried a pet. It may be the case that the couple were planning their next planting season, but that explanation would not match their somber mood and stance. Our ability to make sense of events requires us to reason in relation to how people typically think and feel. As adults, this process is a constant part of social interaction (e.g., “I wonder if I can convince my husband to go out for dinner tonight;” or, “You need to consider how to approach the subject so you won’t hurt her feelings”). The body of literature on theory of mind has several implications for children with hearing loss. This chapter begins with an explanation of theory of mind and how it underlies social understanding, including information about typical development. This is followed by a brief literature review that summarizes what is known about theory of mind development in children with hearing loss. Implications for support- ing these children in gaining social cognitive skills will be described. A case study will illustrate clinical applications of theory of mind in program planning for a deaf student. What Does It Mean to Have a Theory of Mind? Since the 1980’s there has been a proliferation of research in cognitive psychology dealing with children’s development of theory of mind (ToM) concepts. In general, a theory of mind refers to an understanding that people, including themselves, have thoughts, feelings, and desires. Some refer to this as a theory, because it represents an integrated set of concepts used to predict and explain behaviors. In the case of theory of mind, children learn to predict and explain human actions by considering mental states, such as beliefs, desires, intentions and emotions (Astington and Pelletier 1996; Astington and Jenkins 1999; Perner 1991; Wellman 1990). For example, upon seeing dad try to take a bite of a plastic apple, a child with a theory of mind reasons that either his dad is teasing, or he mistakenly thinks that the plastic apple is real. Such social reasoning is complex, because it requires the child to simultaneously represent two separate beliefs (e.g., knowledge that the fruit is fake [the true belief], and knowledge of dad’s belief that it is real [a false belief]). Understanding the relationships between beliefs and actions in the real world requires a representational concept of the mind. That is, children must figure out that people act with regard to their beliefs about the world, not with regard to the world directly (Bartsch and Wellman 1995). Many developmentalists view these representational changes in children’s thinking as a major cognitive-linguistic achievement during the preschool years. Social reasoning skills continue to Address correspondence to: Mary Pat Moeller, Ph.D., BTNRH, 555 N. 30th Street, Omaha, NE 68131, [email protected] or Brenda Schick, Ph.D., Associate Professor, Speech, Language, and Hearing Sciences, 2501 Kittredge Loop Road, University of Colorado, Boulder, CO 80309–0409, U.S.A. [email protected] 209 r 210 a t u P A Sound Foundation Through Early Amplification mature throughout the school years, yet the understanding of false belief that typically develops around four to five years is considered foundational (Flavell and Miller 2000). Astington (1993) explains that children’s discovery of the mind enables them to understand many aspects of human social life, such as surprises, secrets, tricks, mistakes and lies, that depend on the ability to integrate the landscape of actions and the landscape of consciousness (Bruner 1990). Acquisition of a ToM transforms the way children are able to see other people and to make sense of what they are doing (Moore and Frye 1991). This becomes a powerful social tool, as it allows the explanation, prediction, and manipulation of the behaviors of others (Astington 1993; Wellman 1990). Having an understanding of the mental states of others also supports a child’s participation in communication and social interaction. Development of a ToM likely provides the basis for pragmatic language skills (i.e., using language for social purposes, such as predicting what a listener needs to know and using the right amount of information to convey the idea clearly; BaronCohen 1988) and for the ability to read the emotions of others (de Villiers, Hosler, Miller, Whalen and Wong, 1997). Researchers and theorists have suggested that ToM may be linked with other social developmental skills, such as awareness of traits (Yuill 1993), perspective-taking, and inferential reasoning about others (Flavell and Miller 2000; Pillow 1991). Recently, investigators have explored the connections between ToM and literacy and some suggest that theory of mind skills represent an aspect of literate thinking (Astington and Pelletier 1996; de Villiers, Church, Giorano, Whalen and Hoffmeister 1999; Olson 1994). Astington and Pelletier (1996) contend that theory of mind concepts developed during the preschool years provide a conceptual foundation for metacognitive thinking processes that will be a major focus of the school years. Children enter school with theory of mind skills that allow intuitions about what others are thinking and believing. When teachers facilitate cognitively challenging discussions, children can elaborate their social reasoning skills and make their understanding of the mind explicit. This is important, because people knowledge helps to guide children’s understanding of both spoken and written discourse. For example, consider the following passage from the Divine Secrets of the Ya-Ya Sisterhood (Wells 1996). “Vivi Abbot Walker knew she wasn’t supposed to be drinking, and she knew she wasn’t supposed to be smoking. That is why, after she’d cleared up the dinner things and said good night to Shep, she felt a little thrill as she stepped out onto the patio . . . ” (p. 63). The fact that the protagonist plans to engage in an activity she knows to be taboo is never explicitly stated; it must be inferred from the paragraph. Without inferences about the character’s beliefs and intentions, the reader cannot understand her plan or interpret her emotional responses. Only by reasoning about the character’s internal states is the reader able to understand the author’s intended meaning. Accurately decoding the words in the passage clearly is only one step in the process of constructing its meaning. Children must gain the skills of reasoning accurately about others, with reference to their internal states. Making accurate predictions or conclusions about the behavior of others by considering their likely mental states is essential for reading comprehension, socialization and problem solving in relation to others. Even preschool books are filled with concepts that require a theory of mind to fully comprehend (e.g., Little Red Riding Hood’s lack of awareness of the evil intentions of the wolf; Wright-Cassidy et al. 1998). In the next section, we will explore the development of children’s understanding of others and their growing abilities to explain events with reference to others’ mental states. This information has relevance for audiologists, because children with hearing loss who have hearing parents are known to experience delays in theory of mind development. Such delays may influence their socialization and pragmatic communication skills. Developmental Aspects of Theory of Mind in Typically Developing Children Although many studies have focused on children’s discoveries about the mind around three and four years of age, there is evidence that even young infants demonstrate emerging social understanding of others. This section provides a brief summary of some developmental accomplishments in theory of mind concepts from infancy through the school years. For ease of reference, these developmental landmarks are summarized in table 1. r t u P Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists Many believe that the foundations of theory of mind are established in infancy (around 9–12 months) when babies engage in joint attention routines and begin to use cues to determine the intentions of others. Infants in this age range consistently look where the adult looks as cues to meaning, and a use adults as social reference points (e.g., looking back and forth from mom to an object and smiling to share the event; Baldwin and Moses 1994; Tomasello 2003). By 18 to 24 months, toddlers are beginning to be able to read the communicative intentions of adults (Carpenter, Akhtar and Tomasello 1998) and this Table 1: Developmental achievements related to theory of mind in hearing children. Age Developmental Achievement Author(s) 9–12 months Infants engage in joint attention routines; look at where adults look; begin to use cues to determine intentions of others Baldwin and Moses 1994 Tomasello 2003 18–24 months Infants begin to read the communicative intentions of others (this facilitates word learning) Carpenter, Akhtar and Tomasello 1998 18+ months Toddlers engage in symbolic pretend play, simultaneously representing the real and imaginary object Amsel and Smalley 2000; Lillard 1993 20–24 months Toddlers begin to talk about desires (want, like) and feelings Bretherton and Beeghly 1982; Dunn, Bretherton and Munn 1987 30+ months Children begin to use words to talk about the mind (think, know, remember) Shatz, Wellman and Silber 1983 20 months – 4 years Children progress through three stages in talk about the mind: 1. Desire talk and desire-based reasoning predominant 2. Desire talk and desire-based reasoning still prominent, but child starts to talk about thoughts and beliefs 3. Increased talk about thoughts and beliefs and uses these to explain people’s actions Bartsch and Wellman 1995 3 years Children realize people can have different desires; they understand that seeing means knowing Wellman and Liu 2004 4–5 years Children understand that people can act on the basis of what they believe rather than based on reality (false belief) Baron-Cohen, Leslie and Frith 1985; Wimmer and Perner 1983. ∼4.5 to 5 years+ Children can judge how a person will feel upon discovery of a mistaken belief; they begin to understand that true feelings can be masked Wellman and Liu 2004 6–7 years Perner and Wimmer 1985 Children understand second-order representations (Joey thinks that Pam knows that her brother ate her cake.) 211 r 212 a t u P A Sound Foundation Through Early Amplification ability facilitates children’s word learning (Tomasello 2003). Young children learn language in the context of social interaction; infants’ emerging social understanding underlies much of language learning. Other early evidence of theory of mind skills comes from toddler’s participation in pretend play. Pretend (symbolic) play begins around 18 months of age and involves some understanding on the part of the child that a real object is being represented as something else (Amsel and Smalley 2000; Lillard 1993.) Thus, the child simultaneously has two cognitive representations: the real object and the imaginary one. Children of this age also read the intentions of adults or siblings who pretend that one object is something else (Lillard 2002). Evidence shows that children who pretend frequently also have advanced theory of mind skills (Astington and Jenkins 1995; Cutting and Dunn 1999; Hughes and Dunn 1997; Youngblade and Dunn 1995). Pretend play involving socialization may be a particularly rich context for learning about the mind. In this context, children engage in pretend representations, role taking and negotiating with siblings (both of which may contribute to perspective-taking), and using language to talk about thoughts and emotions (Hughes and Dunn 1997; Lillard 2002). Other evidence of children’s developing understanding of the mind is when and how often they begin to talk about internal states, like desires, feelings and thoughts. Studies show that typically developing children begin to talk about their own and other people’s feelings toward the end of the second year of life (Bretherton and Beeghly 1982; Dunn, Bretherton and Munn 1987). However, children’s use of words to talk about the thoughts and beliefs (i.e., know, think, remember, wonder) develops later, beginning somewhere around two and a half years of age (Shatz, Wellman and Silber 1983). Bartsch and Wellman (1995) studied language samples from ten typically developing preschool-aged children for evidence of spontaneous talk about the mind, and found a progression of three phases in children’s use of mental state language. In the earliest phase, young children talked about desires (mostly want and like) and they explained people’s actions and reactions with reference to desires (i.e., Joey hit his brother because he wanted the toy). A second phase began around the third birthday and was characterized by some talk about beliefs and thoughts, but desire talk and desirebased explanations based were predominant. The third phase emerged around age four, when children increased their talk about the thoughts and beliefs of others and used these to explain people’s actions (Bartsch and Wellman 1995). Bartsch and Wellman’s data (1995) also reveal that preschool-aged children frequently talk about the mind. Three-year-old children in their study referred to mental states of others (e.g., saying want, think or know) once in every 25 utterances. This means that these children used such terms to talk about people more than 100 times a day. This suggests that there is a pervasive mentalism in preschoolers’ everyday discourse. As noted above, a major achievement or landmark in theory of mind development is the child’s ability to understand that someone else can have a false belief, which occurs at around age four to five years (Baron-Cohen, Leslie and Frith 1985; Wimmer and Perner 1983). The child’s achievement of an understanding of false belief is commonly tested using one of several classic tasks. Wimmer and Perner, for example, developed what is termed an “unexpected contents task.” In this task, the experimenter shows a child a candy box such as Smarties or M and M’s. The child is asked, “What do you think is in the box?” The child predictably answers, “Candy.” The child then opens the box to discover that it contains a pair of scissors instead. The box is closed up again and a peer (e.g., Joey) is brought into the room. The original child is asked, “What will Joey think is in the box?” In this standard unexpected contents task, three-year-old children will insist that Joey thinks scissors are in the box. Three-year-olds apparently fail to understand that the other person’s beliefs may be false. Four-year-olds, in contrast, will announce, “Joey thinks it’s candy, but he’s wrong – it’s scissors.” This finding has been replicated over many experiments using a variety of approaches and it appears to be a fairly robust phenomenon (Wellman, Cross and Watson 2001). The role of parents and siblings is substantial in developing a theory of mind. Studies have demonstrated that mothers who talk to their children about the mind at early ages have children who later have advanced theory of mind skills (Ruffman, Slade and Crowe 2002; Jenkins, Turrell, Kogushi, Lollis and Ross 2003). Parents of typically developing children use more cognitive talk, as their children get older (and presumably more competent in language and thinking skills; Brown and Dunn 1991; Furrow, Moore, Davidge and Chaisson 1992). Children whose mothers and siblings talk about theory of mind con- r t u P Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists cepts more typically do better at theory of mind tasks. Ethnographic studies of Dunn and her colleagues (Dunn, Brown and Beardsall 1991; Brown and Dunn 1991) demonstrate the role of daily family-child social interactions (e.g., resolving conflicts between siblings, symbolic play routines, reasoning-based explanations) in shaping children’s understanding of the mind. Harris (1992) argues that it is not just the mention of mental states in families that fosters children’s ToM development. Rather, it is the back and forth shuttling from one viewpoint to another that makes a difference. The rich exposure in this back and forth of conversation may be difficult for children with hearing loss to access fully. Some parents may simplify their language in response to a child’s language delays, resulting in less overall exposure to talk about the mind. Thus, reductions in the frequency and quality of exposure to mental state talk may be implicated in theory of mind delays observed in children with hearing loss. Based on a comprehensive meta-analysis of the developmental literature, Wellman and Liu (2004) recommended the need to move beyond standard false belief tasks to gain a comprehensive understanding of children’s emerging concepts of the mind. They proposed a series of tasks that could be used to assess a developmental sequence of theory of mind accomplishments. These tasks were evaluated with preschool children, and an age-related developmental schedule emerged. For example, they showed that before children understand false belief, they understand that people can have different desires (e.g., I can want ice cream, but dad can want salad). They also figure out that people who look in a box will know what it contains and that not looking means not knowing. Some mental state concepts that emerge after false belief understanding include judging how a person will feel when a mistaken belief is discovered (e.g., How will teddy feel when he discovers his favorite snack box is filled with rocks, not Cheerios?), and understanding that a person can be masking their true feelings (e.g., a boy can be smiling when teased but feel upset inside). Much is yet to be learned about children’s understanding of the mind. Viewing the process on a developmental continuum is a major step forward in this enterprise. Theory of mind understanding continues to mature in the school years. A key developmental accomplishment that has been empirically studied is children’s ability to understand embedded or secondorder representations (i.e., Joey thinks that Pam a 213 knows that Bill ate her cake; Perner and Wimmer 1985). By six to seven years of age, children are able to reflect on their own and others’ beliefs in this way, which helps in taking the perspectives of others. Astington and Pelletier (1996) emphasize the relevance of second-order concepts to everyday social interaction. As adults, we often consider what someone believes about someone else’s actions or feelings as we problem solve or socialize. Second-order understanding also is important for children’s understanding of lies, jokes, sarcasm and irony (Leekham 1991; Winner and Leekham 1991). This level of understanding is essential to literacy and critical thinking. To date, there has been little research focused on relating theory of mind to academic development. However, it seems clear that many of the pragmatic functions of school discourse will be easier to manage with well-developed theory of mind concepts. As school years advance, students are expected at a minimum to interpret the perspectives and intentions of others, adapt conversational strategies to the knowledge of the listener, form and revise beliefs about the world, detect bias or prejudice in messages, provide explanations, and negotiate in collaborative learning settings. Theory of mind concepts and well-developed language skills to talk about them may be prerequisite for engaging fully in these higher-order thinking tasks (Astington and Pelletier 1996). Developmental Aspects of Theory of Mind in Children with Hearing Loss There is ample research to show that theory of mind development is delayed in children with a hearing loss who are from hearing families; table 2 summarizes much of the research. Deaf children with hearing parents are delayed in development of theory of mind concepts, as typically measured by false belief understanding, in comparison to hearing peers and deaf children with deaf parents. In the best-case scenario, delays are estimated at two to three years in comparison to typically developing children. However, some studies have shown that some adolescent deaf children have not attained the four-year-old achievement of an understanding of false belief. It should be noted that many studies have used tasks that require both comprehension and production of language, which may easily mask underlying cognitive skills (see table 2 for the type of task used in each study). However, even studies that have used non-verbal or r 214 a t u P A Sound Foundation Through Early Amplification Table 2: Summary of main published studies on theory of mind in deaf children Authors Subjects Primary Questions Gale 1995 11 signing deaf children with hearing parents Group 1: 4;8 – 7 years Group 2: 9;11 – 10;4 How do deaf children Nonverbal hide and perform on verbal seek task; standard and nonverbal ToM verbal task tasks? Deaf children are delayed in ToM skills. Older children, but not younger children passed ToM tasks. Deaf children performed similarly on verbal and nonverbal tasks. Peterson and Siegal 1995 26 signing deaf children, all but 2 were from hearing families Ages 8 to 13 years Does limited access to conversation result in impaired theory of mind development? Standard verbal tasks; modified question format for half of the subjects Significant delays in deaf children’s understanding of false belief (a 29% pass rate reported). Delays were similar to those observed in groups of autistic children. Results support conversational access account. 2 deaf children of deaf parents were not delayed. Language abilities were not directly measured. How do hearing children perform on nonverbal tasks measuring ToM? Standard ToM tasks and a nonverbal sticker hiding game (a seeing is knowing task where child must infer the knowledge state of an adult) Hearing preschoolers performed similarly on verbal and nonverbal tasks. Same as above plus movies designed to elicit theory of mind statements Deaf children performed comparably on verbal and nonverbal forms of false belief tasks. Deaf children performed better than hearing 3 year olds, but worse than 4 year olds on these tasks, showing delays in ToM performance. Language and use of language to explain actions were best predictors of ToM skills. Gale, deVilliers, 20 three and four deVilliers and year olds with Pyres 1996 normal hearing 23 Oral deaf children Do the linguistic Ages 3;9 – 8;9 demands of the false (median age = 6:3) belief task mask deaf children’s true understanding? Tasks Findings and Considerations r t P u Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists a 215 Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Peterson and Siegal 1997 Compared performances of D/D, D/H and autistic children Does limited access to conversation result in impaired theory of mind development? Standard false belief Deaf children of deaf tasks; False parents perform better photograph task than D/H and autistic children on ToM tasks (although children studied were older than four years of age). Concluded that D/H children’s limited access to signed conversations at home influenced ToM development. Parental signing skills were not measured. Steeds, Rowe and Dowker 1997 22 deaf children (“most” from hearing families), Ages 5;8 to 12:4 (X = 9;8) Re-examination of the claims of Peterson and Siegal (1995) Two verbal false belief tasks Russell et al. 1998 32 deaf children (30 D/H; 2 D/D) Ages 4 – 16 years Are there age related 1 standard verbal improvements in false belief task ToM in deaf children? 70% of the children passed the false belief tasks, presenting a more positive picture than initially reported by Peterson and Siegal (1995). Task improvements and greater exposure to British Sign Language were related to improved performance. Deaf children were delayed in ToM skills. Age related changes were observed, but not until after 13 years of age. Language skills were not measured. Authors concluded that delays are related to children’s limited early exposure to talk about the mind. r 216 a t u P A Sound Foundation Through Early Amplification Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Peterson and Siegal 1999 102 children; 11 D/D (6;6 – 12;8), 14 oral children (hard of hearing with losses from moderate to severe; 6;10 – 13;2), 34 D/H signers (5;6 – 12;8), 22 children with autism (6;2 – 13;9), 21 typically developing preschoolers (3;11 – 5;4) Does limited access to conversation result in impaired theory of mind development? 3 standard verbal false belief tasks D/D, hard of hearing and hearing children performed similarly and better than children in D/H and autism groups. Note that the D/D, D/H and oral children are much older than the hearing control group. Results further supported the role of early dialogue in ToM development. deVilliers and deVilliers 2000 27 Oral deaf children Relationship X age = 7;0 between language and ToM skills Teacher ratings of language abilities Standard verbal tasks; Nonverbal task requiring prediction of surprise vs. not surprised Courtin 2000 155 deaf children (37 D/D, 54 D/H and 45 oral deaf) Does early exposure 3 standard verbal to sign language (in false belief tasks this case French Sign Language) Ages 5 to 8 years; promote the 39 hearing children, development of ToM ages 4 to 6 years skills? Does exposure to sign language advantage children in perspective taking? Rhys-Jones and 20 deaf and 20 Ellis 2000 hearing adolescents (11–16 years); 14 deaf and hearing children (6 to 10 years) Do deaf adolescents have poorer social reasoning than hearing peers? Oral deaf children are significantly delayed in ToM skills, measured by verbal or less verbal tasks. Thus, it is not just the language of the task that leads to delay. Syntax, particularly complement mastery, predicts ToM skills. D/D group close to ceiling on false belief tasks at age five. D/D outperformed hearing children (perhaps due to SES differences in the groups). Delays observed in D/H and oral deaf groups. Supports the argument that early exposure to a linguistic system facilitates ToM development. Sequence pictures in Age effects were a story and produce identified. Deaf narratives adolescents were able to empathize with and discuss the mental states of characters in sequence stories. r t P u Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists a 217 Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Marschark et al. 2000 15 hearing students (10.6 – 15.5) Are deaf students able to demonstrate knowledge of the mind in written narratives involving explanations of behavior? Create a spontaneous story about what it would be like to be picked up by a flying saucer OR what it would be like to live in a new civilization under the sea. Only 2 deaf and 3 hearing students made no references to mental states. Deaf students aged 9 to 15 are fully capable of attributing mental states to themselves and others. Schick et al. 2000 176 deaf students; 86 orally educated 49 D/D using ASL 41 D/H using ASL 42 hearing Ages 3;11 – 8;3 What aspects of Standard verbal language predict false belief tasks, low theory of mind skills? verbal false belief tasks, descriptions of movies designed to elicit theory of mind, and a range of cognitive and linguistic measures D/D children are comparable to hearing peers, D/H children delayed in theory of mind. Results were predicted by vocabulary skills and the ability to produce syntactic complements. Figueras-Costa 24 orally trained and Harris D/H children in 2001 two groups: younger (4.7 – 6.5) older (6.9 – 11.11) Is impaired ToM Verbal and performance of deaf nonverbal tasks children an artifact of the weighty verbal demands of the false belief paradigm? Deaf children were delayed on both types of tasks. Only the older children performed above chance. The mean age for passing ToM tasks was 8 years, 10 months. Jackson 2001 Is there a Standard false belief relationship between tasks and receptive receptive language language measures and ToM in deaf children? Language skills were positively and significantly correlated with ToM performance. Deaf children were delayed in ToM compared to language matched hearing children. Concluded that properties specific to language are required for ToM development, over and above age-related experiences and neuromaturation. 51 deaf children in four groups: 11 D/D, 12 D/H using BSL. 14 D/H using TC. 14 oral deaf children r 218 a t u P A Sound Foundation Through Early Amplification Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Is there a difference in early and latesigning children on picture-based (low verbal) ToM tasks, and will a difference disappear if language and spatial intelligence abilities are controlled? Pick a picture to put in a thought balloon based on whether or not a cartoon character had seen an event (Seeing = knowing) Native signing children outperformed latesigning children on pictorial tasks, even when matched on language and spatial abilities. Language abilities were related to ToM. The authors concluded that conversational interactions are important to ToM development. Study 2: 39 deaf children. 21 late signers and 18 native signers Do differences in executive function (ability to plan and shift attention flexibly during problem solving) explain the group differences in Study 1? False photograph test (nonmental representation) Tests of executive function Native signers outperformed late signers on ToM, but not on False photograph or executive function tests. Performances cannot be explained by differences in executive functioning. 34 children with hearing losses > 65 dB, ages 5 to 10 years. all from hearing homes, “some signed and some did not” Examined the effects of age and expressive language skills on ToM development. Parent self report of signing skills. Language Proficiency Profile (teacher rating scale). 4 standard theory of mind tasks Significant delays in deaf children’s false belief understanding. Deaf children approximately three years delayed in ToM. Age effects found. Parents were unable to sign 2/3 of the mental vocabulary, but no association was found between parental signing and children’s ToM (note, however, a restriction in range in parental sign skills). Woolfe, Want Study 1: and Siegal 2002 60 deaf children, ages 4 to 8 years. 40 late-signing (X = 6.8) and 20 native signing (X = 5.10) Lundy 2002 r t P u Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists a 219 Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Moeller 2002 26 deaf child/hearing mother dyads (4.3 to 9.11) 26 hearing child/ hearing mother dyads (4.3 to 5.11) Do hearing mothers who sign discuss mental states with their young deaf children? Are maternal and child language proficiency related to ToM skills? Verbal and nonverbal ToM tasks. Explanation of action tasks. Videotaped observations. child and maternal language measures Child language and maternal talk about the mind were significantly related to deaf children’s ToM performance. Delays identified in ToM (although majority of 6–7 year olds passed). Mothers with high intermediate and advanced signing skills talked about the mind to the same degree as H/H dyads. Woolfe et al. 2003 20 native signing deaf children (ages 4 to 8 years) and their siblings Is quality of sibling relationship indicative of effective communication about the world and better ToM abilities? Referential communication task (barrier game) to examine ease of communicating complex ideas. Sibling Quality Interview. ToM and British Sign Language Receptive Tests Results demonstrated a link between the quality of sibling relations and ToM reasoning in children who are native signers. Remmel 2002 Study 1 10 D/D children (7.4 to 10.9) and 16 D/H children (5.6 to 11.8) Tested various theoretical positions about ToM development by comparing groups of D/D and D/H children Range of tasks measuring ToM and understanding of how perception leads to knowing. D/H children performed poorly relative to D/D and hearing norms. Performance related to length of exposure to sign language and ASL proficiency. Study 2 10 D/D children (3.10 to 5.6) 18 hearing children (3.9 to 5.6) Do D/D children perform comparably to hearing age-mates on various ToM and perspective-taking tasks? Range of tasks measuring false belief, conceptual perspective taking, and knowledge about visual perception. Hearing children outperformed D/D children. Results inconsistent with Courtin’s (2000) position, but support Peterson and Siegal’s (2000) position that ToM depends on early exposure to talk about mental states. r 220 a t u P A Sound Foundation Through Early Amplification Table 2: Summary of main published studies on theory of mind in deaf children (continued) Authors Subjects Primary Questions Tasks Findings and Considerations Terwogt and Rieffe 2004 21 deaf children (11.3 to 12.10) 36 hearing children (9.8 to 12.10) What negotiation strategies do deaf children use in falsebelief situations? (How to deaf and hearing children react to a scenario in which a mother, who is unaware of a change in the situation, threatens to block the fulfillment of the child’s desire). Children presented with two scenarios where providing mother with missing information would help the child reach his goal. Children were asked what they would say to the mother. Deaf children more often failed to correct the mother’s false belief. Hearing children typically left their own desires implicit. Deaf children kept stressing their own desires as the primary argument. Deaf children more often repeated arguments that did not provide new information. low-verbal tasks have still found delays in development (Schick, Hoffmeister, de Villiers and de Villers 2000). In addition, many studies have used sign language interpreters, which may have affected children’s performance. However, it is reasonable to conclude that many deaf children with hearing parents enter school delayed in their theory of mind understanding. A child’s language skills are related significantly to theory of mind development in hearing children (Astington and Jenkins 1999) and in children with a hearing loss (Schick et al. 2000; Moeller 2002). Children with better language skills, including the ability to use complex grammar, have a better understanding of mental reasoning. de Villiers and de Villiers (2000) assert that children’s mastery of advanced syntax, specifically object complements (Mother knew that her son was late getting home) underlies theory of mind development. Peterson and Siegal (1995, 1997, 2000) contend that children’s early access to conversations about the mind promotes theory of mind development. Obviously, language skills are a prerequisite to participation in discourse about the mind, regardless of which aspect is most important. Researchers continue to explore the relative contributions of child language and conversational access by deaf children in relation to theory of mind development. In general, older deaf children perform better than younger deaf children on ToM tasks, but several studies suggest that age effects are mediated by language skills (Courtin 2000; Jackson 2001; Moeller 2002; Schick et al. 2000). In other words, simply getting older does not ensure that deaf children will master theory of mind concepts. It appears that children must gain advanced language skills, in particular language to talk about the mind (e.g., object complements, why clauses, mental verbs), if theory of mind understanding is to grow (de Villiers, de Villiers, Schick and Hoffmeister 2000). It is critical to measure and control for language when exploring the relationships between theory of mind and age in groups of deaf children. Not surprisingly, deaf children who have deaf families develop theory of mind skills much like their hearing peers (Schick et al. 2000; Peterson and Siegal 1997, 1999). Studies comparing signing deaf children with hearing parents (D/H) to signing deaf children with deaf parents (D/D) demonstrated ageappropriate achievement of ToM skills in the D/D group. This is understandable, given the early and full access to language received by most children in the D/D group. These findings underscore the benefits of early access to language models and to participation in familial discussions of mental states for theory of mind development. Both signing deaf children in hearing families or children with significant hearing losses who are learning orally are at risk to miss out on social discourse that promotes understanding of others’ minds (Moeller 2002). Conversational partici- r t u P Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists pation may be reduced by the child’s language delays as well as limitations in sign language use in the family. Deaf children with cochlear implants or hard of hearing children with hearing parents may be exposed to consistent language input, but noise, distance and reverberation may have a negative impact on the magnitude or clarity of input over time. More research focused on these latter two groups is needed. There are a few studies that have examined theory of mind skills in deaf children in naturalistic tasks or settings. For example, there are recent studies exploring the use of theory of mind concepts in written language (Marschark, Green, Hindmarsh and Walker 2000), narrative production (deVilliers and deVilliers 2000; Rhys-Jones and Ellis 2000), tasks where partners must communicate unseen information to each other (Woolfe, Want and Siegal 2003) and problem solving situations (Terwogt and Rieffe 2004). These studies represent a departure from experimental focus on false belief, with efforts to understand how theory of mind understanding influences social and academic participation. However, the results indicate that deaf children have difficulty with theory of mind concepts beyond the traditional, language-rich tasks that are used to assess false belief understanding. Much more research is needed to determine how and when deaf children recruit knowledge of others to support socialization and learning. As with hearing children, mothers play a substantial role in how well deaf children develop a theory of mind. Moeller (2002) explored the extent to which hearing parents of signing deaf children were able to talk to their children about the mind. Mothers and their signing deaf children were videotaped interacting in three contexts designed to elicit mental state talk. Child language skills and theory of mind skills were assessed and interactive language samples were used to measure how much the mothers referred to theory of mind concepts. Results showed that mothers with high intermediate to advanced signing skills frequently talked to their children about the mind. In fact, these mothers talked to their deaf children to the same degree as a control group of hearing/hearing dyads. However, mothers with limited signing skills rarely talked about the mind and were lacking in knowledge of signs to reference such topics. The extent to which mothers talked about the mind was significantly related to children’s theory of mind skills, after controlling for the effects of other variables. Clearly, the quality of language input a 221 from parents can affect a deaf child’s development of a theory of mind. Many gaps exist in our knowledge about children with hearing loss and theory of mind. In general, many studies have included heterogenous populations of children, with varying degrees of hearing loss, communication approaches, and family backgrounds. This limits the generalizability of some results. Further, some specific populations of children have been insufficiently addressed. For example, although some children with cochlear implants have participated in studies, few studies have included focused and wellcontrolled groups of these children. Because of the heterogeneity within groups of children with hearing loss, subject populations need to be well described, so that individual differences may be understood. Within groups of children with cochlear implants, age of implantation, generation of device, and language abilities are obvious variables that need to be controlled for meaningful interpretation of outcomes. Children who receive hearing aids or cochlear implants early and are successful users may have better conversational access than signing deaf children in hearing families. If this is the case, these children should acquire theory of mind concepts closer to typical ages. Empirical research is needed to further explore this hypothesis. Remmel, Peters and Sawyer (2004) recently studied a range of theory of mind skills in a well-controlled group of 30 children who had cochlear implants and age-appropriate language skills. Although mild delays were identified relative to chronological age, the children’s theory of mind skills were considered to be excellent relative to “hearing age” (length of time post implantation). Their findings suggest that early cochlear implantation has positive effects on theory of mind development. These results are in contrast to Peterson (in press) who found no differences in false belief understanding in children with cochlear implants and those with conventional hearing aids. However, the students in Peterson’s study had delayed language skills. Few studies have addressed the theory of mind abilities of children with mild and moderate hearing loss. Such research may further illuminate the relative contributions of language and conversational access on theory of mind development in children with hearing loss. Additional studies of naturalistic interactions (parent-child, sibling-child, teacherchild) are needed to guide clinical practice recommendations targeted at improved social skills in these children. r 222 a t u P A Sound Foundation Through Early Amplification Implications for Working with Children and Families How can this body of literature be applied in pediatric audiological practice? Audiologists have long been aware that some children with hearing loss in their caseloads experience subtle difficulties with socialization and/or pragmatic communication skills. Sometimes parents report that their children have difficulty empathizing with others or considering alternative viewpoints. Their children may lack finesse or flexible strategies in social problem solving situations or may miss or misunderstand subtle classroom rules. It is also true that many children who are deaf or hard of hearing have more difficulty learning to read at an age-appropriate level. The literature on theory of mind development helps us put these common challenges in a fresh and specific context. Theory of mind concepts are central for children’s learning, not only in socialization, but also in reading comprehension, literate thinking and higher order reasoning. It is of value for audiologists to be aware of this foundational area in children’s socialcognitive development, and its relevance to social, communicative and academic growth. In daily clinical management, it is important to recognize that children with hearing loss, especially those in hearing families, are at risk for delays in theory of mind concepts. Delays often are related to the children’s language deficits, in particular the use of language to talk about internal states (thoughts, feelings, beliefs, desires) and the application of this language to reason and problem solve (deVilliers and deVilliers 2000; Moeller 2002; Schick et al. 2000). It takes effort to ensure that the child with hearing loss has access to the ongoing dialogue among family members. Due to the effects of distance, noise and reverberation, some of the natural exposure to talk about the mind in the family may be lost or incomplete. Families should be reminded of the importance of including children with hearing loss in everyday discourse, especially talk about varied viewpoints, thoughts, beliefs and feelings. Several practical recommendations can support families in their interactions with children with hearing loss. First of all, families should be encouraged to explicitly talk to their young children about thoughts, desires, beliefs and feelings during natural interactions with their children. As an initial step, families should be encouraged to use terms to make reference to the mind (see table 3). Recall that typically develop- ing two and one half year olds use mental state verbs in spontaneous talk (Bretherton and Beeghly 1982; Dunn, Bretherton and Munn 1987). Some families who have children with hearing loss artificially limit their talk to the immediate, concrete context (landscape of immediate action) in an effort to “teach” language. When this occurs, families should be advised to begin to expose the child to a wider range of ideas, including mental terms, in the context of daily social interactions. For example, families can be encouraged to shift the emphasis of their talk during a daily routine like setting the table. Instead of focusing on labels (“Here’s a spoon. Put the spoon next to the plate”), they can focus on relational messages like, “Oops, we forgot Johnny’s spoon! He’ll think he can eat with his fingers. I wonder how that will work!? The food is too hot. What do you think we should do?” By adding demonstrations and facial expression, the language concepts can be contextually supported and understood by the child. Parents can be encouraged to talk about how people’s beliefs and feelings affect what they do (e.g., “Your brother can’t play now. He is in a hurry. He is worried he will be late for practice.”) Moeller (2002) found that parents with limited signing skills tended to talk about concrete, perceptually-based topics during pretend play with their signing deaf children (e.g., talking about colors and counting objects in the immediate setting). In part, this resulted from reduced knowledge of sign vocabulary and limited sign language fluency. Sign language teaching lessons for parents need to include both vocabulary and strategies for providing cognitively and socially rich stimulation. In addition, parents may need support to view their children as capable thinkers, who will benefit from varied and challenging language input. Parents may need encouragement to raise expectations for what the child can understand within supportive contexts. The following transcript, taken from Moeller’s (2002) dissertation, illustrates this process unfolding during pretend play involving a hearing mother signing with her seven-year-old deaf son. The child suggested that they use tinker toys to make a bear that can bend over and catch fish. Mom: You are good at thinking of how to put things together. Mom: You can see it in your mind without having a picture. r t u P Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists a 223 Table 3: Internal state terms identified in previous studies of children’s mental state discourse Furrow et al. 1992 Shatz et al. 1983 Brown, Donelan-McCall and Dunn 1996; Tager-Flusberg 1992 Emotive themes (Dunn, Brown, and Beardsall 1991; Tager-Flusberg 1992) think think Used terms in the first two columns and added: know know learn remember guess other remember guess mean real reason doubt forget wish pretend figure dream believe bet understand hope suppose trick lie secret confuse have in mind curious surprise idea make believe realize angry bad shy tired better calm fun good happy hate like love mad sad scared surprise upset wonder Mom: Mommy needs a picture. Mom: What about the head {points out a problem to solve}? Mom: It keeps falling falling falling. Child: No no . . . so bear can look down and catch the fish {explains his reasoning}. Mom: Ah hah, now it can get fish for breakfast {clarifies that she understands his solution}? Mom: Maybe this will be a fish body and a tail? Child: Hmmm maybe that can be head and this body. Child: Pretend like this is little wing arm for swimming. Mom: Uh huh the fin helps it swim. Child: Mom that bear baby has big sharp nail and mommy has closed sharp claws. Mom: Do you know why they have sharp nails and claws {prompts his thinking about the world}? Child: The mom has sharp big claws to dig a worry hole for home then close her claws then go to sleep. This example shows that both partners contributed actively to the negotiation of meanings. Such interaction gives the child opportunities to compare his thoughts with his mother’s. Knowledge of the world is brought to the context to support interpretation and the mother comments on the mind and encourages reasoning about events. Successful families engage the child actively in discussions that promote insight about the mind. It is not solely a matter of how the parents talk or sign to the child. Rather, they view the child as an active constructor of meaning, who benefits from negotiation of meanings and exposure to increasingly abstract ideas as “food for thought.” Audiologists may want to remind parents that much of our thinking is unspoken or implicit. When we lose our keys, we think to ourselves, “Now where was I when I last had them? I wonder if I should retrace my steps or call my husband for the extra set?” Children with hearing loss may benefit when parents purposely “think out loud” in the presence of r 224 a t u P A Sound Foundation Through Early Amplification their children. In a recent workshop, parents were given background on the importance of talking to children about the mind and then they were given role-play scenarios to practice. Sets of cards were passed out and family members discussed what they could say in response to the stated situation. For example, one card stated, “You are waiting in a long line of traffic that is not moving. Your child is anxious to get to MacDonald’s. What do you say?” Several parents initially responded that they would simply tell the child, “We have to wait.” Following discussion, ideas were elaborated, to include statements like, “I don’t know why the traffic isn’t moving. I wonder if there was an accident. It is hard to be patient when we don’t know what’s happening.” Many families report that it is not intuitive for them to talk out loud about implicit ideas in this way. Families need opportunities to learn about the value for their child of mental state talk and they need chances to practice the use of this form of language stimulation. Schick (2004) outlined strategies parents can use to promote Theory of Mind concepts when reading stories with children. She stressed that it is important to help family members understand that shared reading is a good context for giving children insight to the mind. Reading involves the thoughts and motivations of story characters. Stories provide opportunities to learn about other people’s thoughts and emotions and to compare those with our own experiences. By comparing our own reactions, thoughts and feelings to those of the character, we understand ourselves better and we learn that not everyone thinks like we do. Reading provides an opportunity to explore words that describe thoughts and feelings. Some stories help children understand that people change their minds, based on responses to other people or events, which helps children see how people learn from experience and alter their thinking. Importantly, reading can be used to discuss how what we think and feel causes our behavior. Parents can point out the causes of characters’ behaviors and discuss with the child whether the response was wise or not. Families can be guided in the use of thought-provoking strategies during story telling to promote talk about the mind. For example, at a recent workshop, parents were asked to talk about what they could say in response to storybook pictures. In response to a classic story like Goldilocks and the Three Bears, parents were prompted to move beyond labeling and action descriptions to talk about the landscape of the mind. Questions like, “Did Goldilocks know who lived in the house?” and “When the bears came home, how did they know someone had been there?” were modeled and practiced. In working with families, we have found it useful to organize recommended strategies in the form of a simple acronym, T-H-I-N-K. Each letter represents a recommended language stimulation principle, as follows: T – Talk about typically unspoken thoughts and feelings. H – Help children expand vocabulary related to thinking, feeling and problem solving. I – Identify inferences the child is making and comment on them. N – Nurture imagining and thinking using question prompts and models. K – Knowledge is key. Help children make connections between storybooks and experiences in everyday lives to build knowledge of others. These strategies are important for children at all ages. With older children, social problems can become an opportunity to discuss and compare alternate perspectives on potential causes and solutions. In the next section, a brief case illustration is used to demonstrate how theory of mind deficits can be identified and addressed in program planning for an adolescent. Management Strategies for a Student with Theory of Mind Deficits P. A. was a 16-year-old who presented with profound, bilateral sensorineural hearing loss and craniofacial anomalies, related to Goldenhar Syndrome. Medical history included long-term use of a tracheostomy tube, multiple reconstructive surgeries and cochlear implantation. This student discontinued use of hearing aids and the cochlear implant due to limited functional benefit from these devices. He used sign language for communication at home and in school. He attended public school programs (where he was the only deaf student) and his academic skills were in the average to above average range. His future plans included post-secondary education in computer engineering. He was referred for communication evaluation to aid in transition planning. The parents and school expressed concerns for P.A.’s r t P u Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists performance in the area of socialization with language (Pragmatics). Traditional evaluation measures do not address theory of mind skills. Yet, deficiencies in this area may contribute to social and academic difficulties for older students, and therefore constitute a priority for assessment and intervention. The examiner used diagnostic teaching activities to explore P.A’s theory of mind skills. P.A. was asked to explain Norman Rockwell illustrations that require insight to the thoughts and feelings of characters for full understanding. For example, he was asked to explain in writing what was happening in the picture below: P.A.’s initial response was unrelated to the character’s reactions to discovering a Santa suit in his dad’s drawer. In fact, he stated, “He broke something (an inference that seems to be based on the child’s facial expression).” After discussion of the scene and use of question prompts, he wrote, “It looks like he found Santa Claus clothes and he thought that his father is the Santa Claus who give out the presents.” Further question prompting focused on prediction of 225 the child’s emotional responses resulted in the answer, “He was shocked and upset when he found Santa clothes because he thought that the Santa Claus is real.” P.A. possessed the language to express mental state concepts, but he did not typically use this language or consider the emotional and mental perspectives of others when interpreting events. He needed support to apply his knowledge of others in social situations. It was positive to note that he could be prompted to connect beliefs with emotional responses. More emphasis on this type of reasoning was recommended for his program. A second diagnostic teaching activity involved role-play of peer dialogue over the TTY. P. A. was asked to invite a friend over to play a new game on his Play Station 2. The clinician took on the role of the friend. The conversation proceeded well until perspectives were at odds and negotiation was necessary. The interaction proceeded as follows: P.A.: Friend: P.A.: Friend: P.A.: Friend: P.A.: Friend: P.A.: Friend: Figure 1. Norman Rockwell 1956 (By permission, Rockwell Foundation). a P.A.: I just got new game for ps2. wanna come over and play with me? Well I gotta finish my homework, but I could come in about an hour. Will that work? Hey don’t worry about homework, you can finish it later tonight or in school tomorrow. Just come over and we’ll have fun. My mom says she will ground me if I leave my homework until later tonight. I will hurry and then I will be over okay? Bring your homework here. Awesome idea. I can’t figure the math assignment out. Do you think you could help me with it? I just finish that assignment, you can copy my homework. But if I copy it, I won’t learn it and there is a test next week! You can still understand how I do my assignment. There’ll be review sheet for test so you can just do it yourself. But what I would really like is just a little help with one problem. Can you help me and then we can play all we want? Alrightalrightalright, just come over. You’re waste my time. See you. r 226 a t u P A Sound Foundation Through Early Amplification Friend: Sorry about wasting your time. I didn’t mean to hurt your feelings. P.A.: That’s ok, I have a bit of temper. Friend: Okay . . . I’ll see you soon. P.A.: Bye. This student became upset during the conversation when his partner continued to disagree with him. He appeared to focus on his own agenda/goals, and had difficulty making adjustments to take into account the situation/needs of the friend. He will benefit from emphasis on learning to take into account the perspective of others and learning to use higher-order language functions, such as negotiation. He also needs support to identify and express his own feelings as a way to successfully cope in various social situations. Exploration of this student’s insights into others and his ability to apply this information to social reasoning revealed several key intervention priorities that were relevant to transition planning. Summary Children make important strides in the preschool and school age years in understanding of mental concepts, like thoughts, beliefs and feelings. These developments in social cognition allow children to mindread in a host of circumstances, which helps them to understand events in the world and supports socialization with others. As children mature, theory of mind skills become integrated in literate thinking, allowing them to understand what they read and consider abstract ideas in relation to people and the world. Although much is yet to be learned about children’s understanding of the mind, it is well established that early experiences in pretending and engaging in discussions about the mind facilitate learning. For several reasons, many children with hearing loss who have hearing parents experience delays in this area of social reasoning. Audiologists should be aware of this developmental literature, because they are in a position to guide families in the use of language stimulation strategies to promote children’s theory of mind skills. References Amsell, E., and Smalley, J.D. 2000. Beyond really and truly: Children’s counterfactual thinking about pretend and possible worlds. In E. Riggs and P. Mitchell (eds.), Reasoning and the mind (pp. 12–147). Hove, UK: Psychology Press. Astington, J.W. 1993. The child’s discovery of the mind. Cambridge, MA: Harvard University Press. Astington, J.W., and Jenkins, J.M. 1995. Theory of mind and social understanding. Cognition and Emotion 9: 151–165. Astington, J.W., and Jenkins, J.M. 1999. A longitudinal study of the relation between language and theory of mind development. Developmental Psychology 35: 1311–1320. Astington, J. W., and Pelletier, J. 1996. The language of mind: Its role in teaching and learning. In D. R. Olson and N. Torrance (eds.), The handbook of education and human development: New models of learning, teaching and schooling (pp. 593–619). Cambridge, MA: Blackwell Publishers, Ltd. Baldwin, D. A., and Moses, L. M. 1994. Early understanding of referential intent and attentional focus: Evidence from language and emotion. In C. Lewis and P. Mitchell (eds.), Children’s early understanding of mind: Origins and development. Hillsdale, NJ: Erlbaum. Baron-Cohen, S. 1988. Social and pragmatic deficits in autism: Cognitive or affective? Journal of Autism and Developmental Disorders 18: 379–402. Baron-Cohen, S., Leslie, A., and Frith, U. 1985. Mechanical, behavioral and intentional understanding of picture stories in autistic children. British Journal of Developmental Psychology 4: 113–125. Bartsch, K., and Wellman, H. 1995. Children talk about the mind. New York: Oxford University Press. Bretherton, I., and Beeghly, M. 1982. Talking about internal states: The acquisition of an explicit theory of mind. Developmental Psychology 18: 906–921. Brown, J., Donelan-McCall, N., and Dunn, J. 1996. Why talk about mental states? The significance of children’s conversations with friends, siblings, and mothers. Child Development 67: 836–849. Brown, J., and Dunn, J. 1991. ‘You can cry, mum’: The social and developmental implications of talk about internal states. British Journal of Developmental Psychology 9: 237–256. Bruner, J. 1990. Acts of meaning. Cambridge, MA: Harvard University Press. Carpenter, M., Akhtar, N., and Tomasello, M. 1998. Sixteen-month-old infants differentially imitate intentional and accidental actions. Infant Behavior and Development 21: 315–330. Courtin, C. 2000. The impact of sign language on the cognitive development of deaf children: The case of r t u P Development of Social Understanding in Children with Hearing Loss: Implications for Audiologists theories of mind. Journal of Deaf Studies and Deaf Education 5: 266–276. Cutting, A. L., and Dunn, J. 1999. Theory of mind, emotion understanding, language, and family background: Individual difference and interrelations. Child Development 70 (4): 853–865. de Villiers, P. A., Church, J., Giorano, R., Whalen, M., and Hoffmeister, R. 1999. Reference to mental states in the written narratives of deaf children: The contribution of English syntax and ASL skills. Paper presented at the 14th Annual Conference on Issues in Language and Deafness, Omaha, NE. de Villiers, P. A., and de Villiers, J. G. 2000. Linguisitic determinism and the understanding of false beliefs. In P. Mitchessl and K. Riggs (eds.), Children’s reasoning and the mind (pp. 191–228). Hove, UK: Psychology Press. de Villiers, P. A., de Villiers, J. G., Schick, B., and Hoffmeister, R. 2000. Theory of mind development in signing and non-signing deaf children: Impact of sign language on social cognition. Paper presented at the Theoretical Issues in Sign Language Research Conference, Amsterdam. de Villiers, P. A., Hosler, B., Miller, K., Whalen, M., and Wong, J. 1997. Deaf children reading other people’s emotions: Scripts, desires and knowledge states. Poster presented at the Conference for the Society of Research in Child Development, Washington, D.C. Dunn, J., Bretherton, I., and Munn, P. 1987. Conversations about feeling states between mothers and their young children. Developmental Psychology 23: 132–139. Dunn, J., Brown, J., and Bearsdsall, L. 1991. Family talk about feeling states and children’s later understanding of others’ emotions. Developmental Psychology 27 (3): 448–455. Figueras-Costa, B., and Harris, P. 2001. Theory of mind development in deaf children: A nonverbal test of false-belief understanding. Journal of Deaf Studies and Deaf Education 6: 92–102. Flavell, J., and Miller, P. 2000. Social cognition. In W. Damon (Series ed.) and D. Kuhn and R. Siefler (eds.), Handbook of child psychology, Vol. 3, Cognition, perception and language. New York: Wiley. Furrow, D., Moore, C., Davidge, J., and Chaisson, L. 1992. Mental terms in mother’s and children’s speech: Similarities and relationships. Journal of Child Language 19: 617–631. Gale, E. 1995. Language and theory of mind in signing deaf children. Unpublished master’s thesis, Smith College, North Hampton, MA. Gale, E., de Villiers, P. A., de Villiers, J., and Pyers, J. a 227 1996. Language and theory of mind in oral deaf children. In Proceedings of the Boston University Conference on Language. Harris, P.L. 1992. From simulation to folk psychology: The case for development. In M. Davies and T. Stone (eds.), Folk psychology (Vol. 3). Cambridge, MA: Blackwell Publishers. Hughes, C., and Dunn, J. 1997. Understanding mind and emotion: Longitudinal associations with mental-state talk between young friends. Developmental Psychology 34: 1026–1037. Jackson, A.L. 2001. Language facility and theory of mind development in deaf children. Journal of Deaf Studies and Deaf Education 6: 161–176. Jenkins, J.M., Turrell, S.L., Kogushi, Y., Lollis, S., and Ross, H.S. 2003. A longitudinal investigation of the dynamics of mental state talk in families. Child Development 74: 905–920. Leekham, S.R. 1991. Jokes and lies: Children’s understanding of intentional falsehood. In A. Whiten (ed.), Natural theories of mind: Evolution, development and simulation of everyday mindreading (pp. 159–174). Oxford, England: Blackwell. Lillard, A. 1993. Pretend play skills and the child’s theory of mind. Child Development 64: 348–371. Lillard, A. 2002. Pretend play and cognitive development. In U. Goswami (ed.), Blackwell handbook of childhood cognitive development (pp. 188–205). Oxford, England: Blackwell Publishing. Lundy, J. 2002. Age and language skills of deaf children in relation to theory of mind development. Journal of Deaf Studies and Deaf Education 7: 41–56. Marschark, M., Green, V., Hindmarsh, G., and Walker, S. 2000. Understanding theory of mind in children who are deaf. Journal of Child Psychology and Psychiatry 41: 1067–1073. Moeller, M.P. 2002. Mother’s mental state input and theory of mind understanding in deaf and hearing children. Unpublished doctoral dissertation. University of Nebraska-Lincoln. Moore, C., and Frye, D. 1991. Children’s theories of mind: Mental states and social understanding. Hillsdale, NJ: Lawrence Erlbaum. Olson, D. 1994. The world on paper. Cambridge: Cambridge University Press. Perner, J. 1991. Understanding the representational mind. Cambridge, MA: MIT Press. Perner, J., and Wimmer, H. 1985. “John thinks that Mary thinks that . . . ” Attribution of second order beliefs by 5- to 10-year-old children. Journal of Experimental Child Psychology 39: 437–471. r 228 a t u P A Sound Foundation Through Early Amplification Peterson, C. C., and Siegal, M. 1995. Deafness, conversation and theory of mind. Journal of Child Psychology and Psychiatry 36: 459–474. Peterson, C. C., and Siegal, M. 1997. Domain specificity and everyday biological, physical, and psychological thinking in normal, autistic, and deaf children. New Directions for Child Development 75: 55–70. Peterson, C. C., and Siegal, M. 1999. Representing inner worlds: Theory of mind in autistic, deaf, and normal hearing children. American Psychological Society 10: 126–129. Peterson, C. C., and Siegal, M. 2000. Insights into theory of mind from deafness and autism. Mind and Language 15: 123–145. Peterson, C. C. in press. Theory of mind development in oral deaf children with cochlear implants or conventional hearing aids. Journal of Child Psychology and Psychiatry. Pillow, B. H. 1991. Children’s understanding of biased social cognition. Developmental Psychology 27: 539–551. Remmel, E. 2002. Theory of mind development in signing deaf children. Unpublished doctoral dissertation. Stanford University. Remmel, E., Peters, K., and Sawyer, A. 2004, May. Theory of mind and language development in children with cochlear implants. Poster presented at the annual convention of the American Psychological Society, Chicago, IL. Rhys-Jones, S., and Ellis, H. 2000. Theory of mind: Deaf and hearing children’s comprehension of picture stories and judgments of social situations. Journal of Deaf Studies and Deaf Education 5: 248–265. Ruffman, T., Slade, L., and Crowe, E. 2002. The relation between children’s and mothers’ mental state language and theory-of-mind understanding. Child Development 73: 734–751. Russell, P.A., Hosie, J.A., Gray, C.D., Scott, C., Hunter, N., Banks, J., and MacCaulay, M. 1998. The development of theory of mind in deaf children. Journal of Child Psychology and Psychiatry 39: 903–910. Schick, B. 2004. Theory of mind and early language development; Theory of mind and reading. In S. Watkins (ed.), The SKI-HI Curriculum, Volume II (pp. 2116–2140). Hope, Inc: North Logan, Utah. Schick, B., Hoffmeister, R., de Villiers, P. A., and de Villiers, J. 2000. Theory of mind development in signing and non-signing children: The impact of language on social cognition. Paper presented at the 7th Conference on Theoretical Issues in Sign Language Research, Amsterdam. Shatz, M., Wellman, H., and Silber, S. 1983. The acquisi- tion of mental verbs: A systematic investigation of first references to mental states. Cognition 14: 301–321. Steeds, L., Rowe, K., and Dowker, A. 1997. Deaf children’s understanding of beliefs and desires. Journal of Deaf Studies and Deaf Education 2: 185–195. Tager-Flusberg, H. 1992. Autistic children’s talk about psychological states: Deficits in the early acquisition of a theory of mind. Child Development 63: 161–172. Terwogt, M. M. and Rieffe, C. 2004. Deaf children’s use of beliefs and desires in negotiation. Journal of Deaf Studies and Deaf Education 9 (1): 27–38. Tomasello, M. 2003. Constructing a language: A usagebased theory of language acquisition. Cambridge, MA: Harvard University Press. Wells, R. 1996. The divine secrets of the ya-ya sisterhood. New York, NY: Harper Collins. Wellman, H. 1990. The child’s theory of mind. Cambridge, MA: Bradford Books. Wellman, H. W., Cross, D., and Watson, J. 2001. Metaanalysis of theory-of-mind development: The truth about false belief. Child Development 72: 655–684. Wellman, H. W. and Liu, D. 2004. Scaling of theory of mind tasks. Child Development 75(2): 523–541. Wimmer, H., and Perner, J. 1983. Beliefs about beliefs: Representation and constraining function of wrong beliefs in young children’s understanding of deception. Cognition 13: 103–128. Winner, E., and Leekham, S. 1991. Distinguishing irony from deception: Understanding the speaker’s secondorder intention. British Journal of Developmental Psychology 9: 257–270. Woolfe, T., Want, S., and Siegal, M. 2002. Signposts to development: Theory of mind in deaf children. Child Development 73: 768–778. Woolfe, T., Want, S., and Siegal, M. 2003. Siblings and theory of mind in deaf native signing children. Journal of Deaf Studies and Deaf Education 8 (3): 340–347. Wright Cassidy, K., Ball, L. V., Rourke, M. T., Stetson Werner, R., Feeny, N., Chu, J. Y., et al. 1998. Theory of mind concepts in children’s literature. Applied Psycholinguistics 19: 463–470. Youngblade, L.M., and Dunn, J. 1995. Individual differences in young children’s pretend play with mother and sibling: Links to relationships and understanding of other people’s feelings and beliefs. Child Development 66:1472–1492. Yuill, N. 1993. Understanding of personality and dispositions. In M. Bennett (ed.), The development of social cognition: The child as a psychologist. New York: Guilford Press.
© Copyright 2026 Paperzz