The careers of top managers and firm openness: internal versus

BANCO DE PORTUGAL
Economic Research Department
THE CAREERS OF TOP MANAGERS
AND FIRM OPENNESS: INTERNAL
VERSUS EXTERNAL LABOUR MARKETS
Francisco Lima
Mário Centeno
WP 15-03
October 2003
The analyses, opinions and findings of these papers represent the views of the
authors, they are not necessarily those of the Banco de Portugal.
Please address correspondence to Francisco Lima, Instituto Superior Técnico,
Departamento de Engenharia e Gestão, Av. Prof. Cavaco Silva, Taguspark, 2780-990
Porto Salvo, Portugal; email: [email protected] or Mário Centeno, Economic Research Department, Banco de Portugal, Av. Almirante Reis nº 71, 1150-165
Lisboa, Portugal, Tel.#351-213130837; Fax#351-213107804;
email: [email protected].
Wkh Fduhhuv ri Wrs Pdqdjhuv dqg Ilup
Rshqqhvv= Lqwhuqdo yhuvxv H{whuqdo Oderxu
Pdunhwv
Iudqflvfr Olpd Lqvwlwxwr Vxshulru Wìfqlfr/ Xqlyhuvlgdgh Wìfqlfd gh Olverd
Päulr Fhqwhqr
Edqfr gh Sruwxjdo dqg LVHJ/ Xqlyhuvlgdgh Wìfqlfd gh Olverd
Devwudfw
Wklv sdshu vwxglhv wkh fduhhuv ri wrs pdqdjhuv xvlqj d odujh sdqho ri upv1 Wkh
pdlq remhfwlyh lv wr hpslulfdoo| hydoxdwh wkh uroh ri ohduqlqj dqg kxpdq fdslwdo
dftxlvlwlrq lq surprwlrq g|qdplfv dorqj zlwk yduldeohv fdswxulqj wkh irupdwlrq
ri lqwhuqdo oderxu pdunhw +LOP, sudfwlfhv1 Zh qg wkdw surprwlrq lv qhjdwlyho|
fruuhodwhg zlwk whqxuh/ exw wkdw wkhuh lv d qrq0olqhdu qhjdwlyh gxudwlrq ghshqghqfh
zlwk hodsvhg wlph vlqfh wkh odvw surprwlrq hyhqw1 Ilupv vkrzlqj d zhdnhu ghjuhh ri
LOP duh ohvv surqh wr surprwh lqvlghuv1 Zh qh{w wdnh wkh pdqdjhu*v fduhhu lqvlgh
d up dv d vhtxhqfh ri surprwlrq ghflvlrqv/ dqg xvh d qhvwhg vwuxfwxuh ri wkh
surprwlrq ghflvlrq prghoohg dv d qhvwhg orjlw prgho1 Uhvxowv vkrz wkdw wkh wrs
pdqdjhu*v surjuhvvlrq qhvw lqwr irxu w|shv= orvhu/ hduo| vwduwhu/ odwh ehjlqqhu/ dqg
fkdpslrq/ dqg wkdw wkh ghjuhh ri LOP kdv d vljqlfdqw lpsdfw rq wkh surfhvv ri
ohduqlqj lqvlgh wkh up1
Nh| zrugv= Nh|zrugv= lqwhuqdo oderxu pdunhwv/ surprwlrqv/ qhvwhg orjlw/
shuvrqqho hfrqrplfv MHO0Frgh= M74/ P45/ P84
Iudqflvfr Olpd/ Lqvwlwxwr Vxshulru Wìfqlfr/ Ghsduwdphqwr gh Hqjhqkduld h
Jhvwær dqg FHJ0LVW/ Dyhqlgd Suri1 Fdydfr Vloyd/ Wdjxvsdun/ 5:;30<<3 Sruwr Vdoyr
Sruwxjdo1 Iudqflvfr Olpd judwhixoo| dfnqrzohgjhv wkh qdqfldo vxssruw iurp Ixq0
gdêær sdud d Flíqfld h d Whfqrorjld +judqw SRFWL24<<<2HFR2663;<,1 Wkh dxwkruv
wkdqn wkh frpphqwv ri Jlrujlr Euxqhoor/ Shgur Sruwxjdo dqg sduwlflsdqwv lq wkh
HHD dqg HDOH 5335 phhwlqjv/ dqg 5qg Wudqvdwodqwlf Phhwlqj L]D2VROH 53361
Hpdlo dgguhvv= iudqflvfr1olpdCwdjxv1lvw1xwo1sw +Iudqflvfr Olpd,1
Suhsulqw vxeplwwhg wr Hovhylhu Vflhqfh
47 Pd| 5337
Wkh Fduhhuv ri Wrs Pdqdjhuv dqg Ilup Rshqqhvv= Lqwhuqdo yhuvxv
H{whuqdo Oderxu Pdunhwv
4
Lqwurgxfwlrq
Prvw sdshuv rq zdjhv dqg surprwlrq g|qdplfv vwuhvv wkh uroh ri ohduqlqj
dqg kxpdq fdslwdo dftxlvlwlrq dv srvvleoh h{sodqdwlrqv iru wkh revhuyhg sdw0
whuq ri fduhhuv lqvlgh rujdql}dwlrqv +vhh/ iru h{dpsoh/ Jleerqv dqg Zdogpdq/
4<<<e,1 Wklv olwhudwxuh gudzv khdylo| rq wkh frqfhsw ri lqwhuqdo oderxu pdu0
nhw +LOP,/ zklfk jrhv edfn wr wkh vhplqdo zrun e| Grhulqj dqg Slruh +4<:4,1
Krzhyhu/ wkh h{lvwhqfh ri vxfk dq lqwhuqdo oderxu pdunhw lv wdnhq iru judqwhg
lq prvw dssolfdwlrqv dqg hpslulfdo uhvhdufkhuv kdyh jhqhudoo| ryhuorrnhg wkh
frqglwlrqv xqghu zklfk wkh glvwlqfwlyh ihdwxuhv ri wkhvh LOPv duh iruphg lq0
vlgh wkh up1 Lq idfw/ zh duh qrw dzduh ri dq| sdshu wkdw vlpxowdqhrxvo| ghdov
zlwk phdvxuhv ri wkh up lqwhuqdo oderxu pdunhw dqg vwxglhv lwv lpsdfw rq
wkh surprwlrq srolf|1
Rxu pdlq jrdo lq wklv sdshu zloo eh wr hpslulfdoo| hydoxdwh wkh uroh ri ohduqlqj
dqg +vshflf, kxpdq fdslwdo dftxlvlwlrq lq surprwlrq g|qdplfv/ dorqj zlwk
yduldeohv fdswxulqj wkh irupdwlrq ri LOP sudfwlfhv lqvlgh wkh up1 Wkhvh ydul0
deohv dlp dw phdvxulqj wkh h{lvwhqfh ri vrph nlqg ri lqwhuqdolvdwlrq lq wkh
up*v kxpdq uhvrxufhv pdqdjhphqw sudfwlfhv/ dv uhfhqwo| glvfxvvhg lq Od}hdu
dqg R|hu +5336,1 Prvw hpslulfdo h{huflvhv dvvxph wkh h{lvwhqfh ri vxfk dq lq0
whuqdo oderxu pdunhw hqylurqphqw +dq h{dpsoh ehlqj Fkldssrul/ Vdodqlì/ dqg
Ydohqwlq/ 4<<<,/ exw gr qrw whvw wkh xqghuo|lqj wkhrulhv lq pxowl0up gdwdvhwv1
Wklv sdshu wulhv wr oo lq wklv jds1
Wkhuh duh qrw pdq| vwxglhv rq fduhhuv lqvlgh upv/ pdlqo| ehfdxvh wkhuh lv
5
d odfn ri vxlwdeoh gdwd1 Ednhu/ Jleev/ dqg Kropvwurp +4<<7d/ e, dqdo|vhg 53
|hduv ri shuvrqqho gdwd iurp rqh up dqg rhu rqh ri wkh uvw dqg prvw frp0
sohwh zrunv lq wkh hog1 Dgglwlrqdo h{dpsohv ri vxfk vwxglhv duh Duljd/ Rknxvd
dqg Euxqhoor +4<<<,/ zkr vwxg| wkh surprwlrq srolf| ri d odujh Mdsdqhvh
pdqxidfwxulqj up/ dqg wkh Shujdplw dqg Yhxp +4<<<, vwxg| rq wkh fdxvhv
dqg wkh frqvhtxhqfhv ri surprwlrqv xvlqj wkh Qdwlrqdo Orqjlwxglqdo Vxu0
yh| ri \rxwk1  Wkhvh vwxglhv vkrz krz gl!fxow lw lv wr jhw wkh ehvw ri wzr
zruogv= ghwdlohg lqglylgxdo lqirupdwlrq dorqj zlwk frpsdudeoh up0ohyho gdwd
rq shuvrqqho srolflhv1 Rxu gdwdvhw lv d pdwfkhg hpsor|hu0hpsor|hh sdqho zlwk
ghwdlohg lqirupdwlrq rq pxowlsoh upv/ doorzlqj xv wr uhodwh wkh zrunhuv* dw0
wulexwhv zlwk wkh klhudufk| dqg wr lghqwli| krz upv vhohfw zrunhuv/ wkdw lv/
wkh ghwhuplqdqwv ri wkh lqglylgxdo fduhhu rxwfrphv1
Lq rughu wr xvh pruh wkdq rqh up/ d kljk ghjuhh ri frkhuhqfh lq dw ohdvw wzr
glphqvlrqv lv qhfhvvdu|= rq wkh rqh kdqg/ hdfk up*v udqnlqj dqg surprwlrq
v|vwhpv pxvw eh frpsdudeoh/ dqg/ rq wkh rwkhu kdqg/ wkh jurxs ri zrunhuv
pxvw eh krprjhqhrxv lq rughu wr doorz iru frpsdulvrqv dfurvv upv1 Rxu gdwd
frph iurp Txdgurv gh Shvvrdo +TS,/ d qdwlrqdoo| uhsuhvhqwdwlyh Sruwxjxhvh
dqqxdo gdwd vrxufh/ froohfwhg e| wkh Sruwxjxhvh jryhuqphqw/ fryhulqj yluwxdoo|
doo upv lq wkh hfrqrp|1 Wkhuh lv d frpprq udqnlqj v|vwhp wkdw lv urxjko|
frpsdudeoh dfurvv upv lq wkh TS gdwdvhw/ zklfk pdnhv lw srvvleoh wr xvh d
odujh qxpehu ri upv wr vwxg| surprwlrq srolflhv lq wkh suhvhqfh ri glhuhqw
up fkdudfwhulvwlfv1 Lq rughu wr jxdudqwhh wkh krprjhqhlw| ri wkh srro ri
revhuyhg zrunhuv/ zh dlp dw dqdo|vlqj wkh fduhhu sdwwhuqv ri d suhflvho| ghqhg

Vhh dovr PfFxh +4<<9, rq srvlwlrq fkdqjhv/ Zlqwhu0Hephu dqg ]zhlp oohu +4<<:,
rq jhqghu glhuhqfhv lq fduhhu rxwfrphv/ Vhow}hu dqg Phuuhww +5333,/ zkr h{whq0
vlyho| dqdo|vh shuvrqqho ohv iurp d vlqjoh edqn/ Errwk/ Iudqfhvfrql/ dqg Iudqn
+5336, rq surprwlrq dqg jhqghu/ Wuheoh hw do1 +5334, rq d uhsolfd ri wkh Ednhu/
Jleev/ dqg Kropvwurp +4<<7d, sdshu/ Hulnvvrq +4<<<, zlwk d whvw ri wrxuqdphqwv/
dqg Od}hdu +4<<<, rq surprwlrq dqg zdjh jurzwk1
6
jurxs lqvlgh wkh rujdql}dwlrq= wkrvh fodvvlhg dv wrs pdqdjhuv1
Zh qhhg wr lghqwli| vshflf vrxufhv ri yduldwlrq dfurvv upv wkdw fdswxuh wkh
irupdwlrq ri LOP sudfwlfhv1 Lq grlqj vr zh zloo xvh wzr glhuhqw sur{lhv wr
up rshqqhvv= d gluhfw lqglfdwru ri wkh h{lvwhqfh ri sruwv ri hqwu| zklfk
lv uhodwhg wr wkh up*v klulqj surfhvv +vhh Od}hdu dqg R|hu/ 5336, dqg dq
lqglfdwru ri wkh vwhhsqhvv ri wkh zdjh suroh pruh suhflvho| dq hvwlpdwh ri
wkh up0vshflf uhwxuqv wr whqxuh1
Kdylqj fkdudfwhul}hg wkh surprwlrq hyhqw/ zh h{soruh wklv lvvxh lq wkh frq0
wh{w ri wkh hduo| vwduwhu0odwh ehjlqqhu g|qdplf prgho +Fkldssrul/ Vdodqlì/
dqg Ydohqwlq/ 4<<<,1 Wkh prgho vwdwhv wkdw odwh ehjlqqhuv +zrunhuv zkr zhuh
qrw surprwhg lq wkh uvw vwdjh ri wkh uhodwlrqvkls, zrxog eh v|vwhpdwlfdoo|
idyrxuhg lq ixwxuh surprwlrq ghflvlrqv1 Zh h{whqg wkh hpslulfdo whvw ri Fkl0
dssrul/ Vdodqlì/ dqg Ydohqwlq +4<<<, wr wkh frqwh{w ri d pxowl0up vdpsoh/
dqg hpslulfdoo| lqyhvwljdwh krz wkh prgho suhglfwlrqv duh dhfwhg e| glhu0
hqw ghjuhhv ri LOP/ pruh vshflfdoo|/ zh duh lqwhuhvwhg lq glvfxvvlqj li wkh odwh
ehjlqqhu hhfw lv suhvhqw lq pruh rshq rujdqlvdwlrqv1
Wkh ghflvlrq ri zkhwkhu wr surprwh d wrs pdqdjhu lv ehwwhu prghoohg li zh
frqglwlrq lw rq khu zkroh klvwru| lqvlgh wkh rujdql}dwlrq1 Wklv vxjjhvwv d
qhvwhg vwuxfwxuh ri wkh surprwlrq ghflvlrq ryhu wkh pdqdjhu*v fduhhu wkdw
zh wu| wr h{soruh lq wkh hfrqrphwulf lpsohphqwdwlrq1 Wkxv/ d qhvwhg orjlw
prgho lv dssolhg dqg irxu glvwlqfw fduhhu sdwkv duh lghqwlhg= wkh orvhuv +qhyhu
surprwhg,/ wkh hduo|0vwduwhuv +surprwhg hduo| lq wkhlu fduhhu/ exw qrw lq wkh
odvw shulrgv,/ wkh odwh ehjlqqhuv +zlwk surprwlrqv frqfhqwudwhg odwhu lq wkhlu
fduhhuv,/ dqg wkh fkdpslrqv +surprwhg lq doprvw hyhu| shulrg,1
Zh suhvhqw hfrqrphwulf uhvxowv iurp surprwlrq hyhqwv ri wrs pdqdjhuv xvlqj
7
d vdpsoh ri 5/:37 Sruwxjxhvh frpsdqlhv1 Zh qg wkdw surprwlrq lv qhjdwlyho|
fruuhodwhg zlwk whqxuh/ exw wkdw wkhuh lv qrq0olqhdu gxudwlrq ghshqghqfh zlwk
hodsvhg wlph vlqfh wkh odvw surprwlrq hyhqw1 Ilupv zlwk zhdnhu LOPv wkrvh
zlwkrxw sruwv ri hqwu| ru zlwk ohvv vwhhs whqxuh0zdjh surohv duh ohvv surqh
wr surprwh lqfxpehqw wrs pdqdjhuv1 Dovr/ odujhu frpsdqlhv zlwk odujhu pdq0
djhuldo udqnv kdyh kljkhu surprwlrq udwhv/ wkxv d pl{ ri ohduqlqj prgho hhfwv
dqg h!flhqf| dujxphqwv pljkw eh qhhghg wr ixoo| h{sodlq wkh revhuyhg sur0
prwlrq sdwwhuqv1 Wkh uhvxowv iurp wkh qhvwhg orjlw prgho lghqwli| irxu glvwlqfw
fduhhu sdwkv1 Rxu qglqjv dovr vkrz wkdw wkh odwh ehjlqqhu hhfw ghshqgv rq
wkh ghjuhh ri LOP lq wkh up1 Lq upv wkdw xvh sruwv ri hqwu| wkh odwh ehjlqqhu
hhfw lv pruh olnho| wr eh revhuyhg1
Zh vwduw zlwk d ghvfulswlrq ri wkh gdwd/ dorqj zlwk d fkdudfwhulvdwlrq ri wkh
udqnlqj v|vwhpv xvhg wr frpsduh wrs pdqdjhuv dfurvv upv/ dqg d glvfxvvlrq
ri LOP sudfwlfhv1 Lq Vhfwlrq 6 zh dqdo|vh wkh ghwhuplqdqwv ri surprwlrqv1
Wkh irxuwk vhfwlrq h{soruhv wkh surprwlrq g|qdplfv dsso|lqj d qhvwhg orjlw
prgho wr wkh vhtxhqwldo surprwlrq ghflvlrq ri wkh hpsor|hu1 Zh frqfoxgh
vxppdulvlqj rxu pdlq qglqjv1
5
Gdwd dqg lqglfdwruv ri LOP sudfwlfhv
514 Gdwd
Wkh gdwd xvhg duh d vhw ri upv* shuvrqqho uhfrugv jdwkhuhg dqqxdoo| e| wkh
Sruwxjxhvh dxwkrulwlhv wkh vxuyh| Txdgurv gh Shvvrdo +TS, d pdwfkhg
orqjlwxglqdo hpsor|hu0hpsor|hh gdwdvhw1 Wkh vxuyh| fryhuv yluwxdoo| hyhu| up
lq wkh Sruwxjxhvh hfrqrp| dqg frqwdlqv lqirupdwlrq derxw doo ri wkh zrunhuv
8
zkr duh hpsor|hg wkhuhlq1 Wkh hpsor|hu pxvw srvw wkh up*v uhvsrqvhv +wkh
lqirupdwlrq rq hpsor|hhv, vhqw wr wkh Plqlvwu| ri Hpsor|phqw lq d sxeolf
sodfh lqvlgh wkh up/ zklfk frqvlghudeo| uhgxfhv wkh ulvn ri phdvxuhphqw
huuru1 2
Wkh gdwdvhw frpsulvhv doo zrunhuv dvvljqhg wr wkh wrs udqnv ri wkh klhudufk|
hpsor|hg lq upv kdylqj pruh wkdq 43 hpsor|hhv1 Wkhuh duh dssur{lpdwho|
2> .fe upv/ fryhulqj 2.b> efe wrs pdqdjhuv iurp 4<<4 wr 4<<;1 Wkh hpsor|0
huv uhsruw wkh hpsor|hhv* djh/ whqxuh/ hgxfdwlrq/ mre dvvljqphqw/ wlplqj ri
surprwlrqv/ dqg vhyhudo rwkhu lqglylgxdo dqg up dwwulexwhv1
Wkh vxppdu| vwdwlvwlfv iru wkh pdlq yduldeohv duh suhvhqwhg lq Wdeoh 41 Wkh
uvw wzr froxpqv duh iru doo wrs pdqdjhuv lq wkh vdpsoh uhjdugohvv ri wkh
qxpehu ri |hduv wkh frpsdqlhv wkh| zrun iru duh revhuyhg gxulqj wkh 4<<40<;
shulrg1 Zh dovr xvh d vpdoohu vdpsoh zlwk wkh wrs pdqdjhuv revhuyhg gxulqj
wkh zkroh ;0|hdu shulrg1 Wklv |lhogv d vdpsoh zlwk bH> bbb wrs pdqdjhu0|hduv/
iurp > .2H glhuhqw up0|hduv1 Qrwh wkdw wrs pdqdjhuv zlwk d froohjh ghjuhh
frpsrvh doprvw 93 shu fhqw ri wkh vdpsoh dqg wkdw dyhudjh djh lv durxqg
76 |hduv1 Jlyhq wkhvh ghprjudsklf fkdudfwhulvwlfv/ lw lv qrw vxusulvlqj wkdw
dyhudjh whqxuh lv kljk/ pruh wkdq 46 |hduv1 Hodsvhg wlph vlqfh odvw surprwlrq lv
dovr yhu| kljk= rq dyhudjh d pdqdjhu qhhgv pruh wkdq 8 |hduv wr eh surprwhg1
Wkh surprwlrq udwh udqjhv iurp 44 wr 47 shu fhqw1
Lqvhuw Wdeoh 4 khuh
2
Uhfhqw dssolfdwlrqv xvlqj TS gdwd dw wkh up dqg zrunhu ohyhov lqfoxgh Fdeudo
dqg Pdwd +5336,/ Olpd dqg Shuhlud +5336, dqg Ylhlud +5333,1
9
515 Rujdql}dwlrqdo klhudufk| dqg surprwlrq
Wkh TS xvhv wzr w|shv ri udqnlqj v|vwhpv= judgh ohyhov ghqhg e| odz dqg
wkh Qdwlrqdo Fodvvlfdwlrq ri Rffxsdwlrqv1 Wkhvh wzr udqnlqj v|vwhpv frp0
sohphqw hdfk rwkhu/ wkxv rxu vwudwhj| zdv wr vhohfw wkrvh lqglylgxdov fodvvlhg
lq wkh wrs udqn dffruglqj wr dw ohdvw rqh ri wkhvh udqnlqj v|vwhpv1 Qrwh wkdw
hyhu| up pxvw uhsruw wkh zrunhu*v klhudufklfdo srvlwlrq xvlqj erwk udqnlqj
v|vwhpv/ vr wkh lqirupdwlrq lv frpsohwh dqg frpsdudeoh dfurvv upv1
Judgh ohyhov duh ghqhg e| odz dqg wkh up lv uhtxluhg wr fodvvli| mrev xvlqj
wkhp +vhh Dsshqgl{ Wdeoh D4 iru d ixoo ghvfulswlrq ri wkh ohyhov,1 Wkh fodvvl0
fdwlrq lv pdgh dffruglqj wr wkh wdvn shuiruphg dqg vnloo uhtxluhphqw/ dqg hdfk
ohyho fdq eh frqvlghuhg dv d od|hu lq d klhudufk| ghqhg lq whupv ri lqfuhdv0
lqj uhvsrqvlelolw| dqg wdvn frpsoh{lw|1 Wkhuh duh hljkw klhudufklfdo ohyhov= 4,
dssuhqwlfhv/ lqwhuqvklsv/ wudlqhhv> 5, qrq0vnloohg surihvvlrqdov> 6, vhpl0vnloohg
surihvvlrqdov> 7, vnloohg surihvvlrqdov> 8, kljkhu0vnloohg surihvvlrqdov> 9, vxshu0
ylvruv/ whdp ohdghuv> :, lqwhuphgldu| pdqdjhuv> ;, wrs pdqdjhuv1
Wkh Qdwlrqdo Fodvvlfdwlrq ri Rffxsdwlrqv +QFR, dovr lghqwlhv wkh zrunhuv
zkr duh wrs pdqdjhuv dqg wkh vxejurxs ri wrs h{hfxwlyhv1 Ehklqg wkh QFR lv
dq lpsolflw klhudufklfdo vwuxfwxuh1 Dowkrxjk wkh wzr fodvvlfdwlrq v|vwhpv duh
qrw hqwluho| frpsdwleoh/ wkh| fdq eh frqvlghuhg dv frpsohphqwv jlyhq wkhlu
glhuhqw remhfwlyhv= judgh ohyhov duh xvhg dv d edvlv wr wkh edujdlqlqj surfhvv
dqg duh qrw gluhfwo| olqnhg zlwk wkh zrunhu*v hgxfdwlrq dqg2ru wudlqlqj> zkloh
wkh QFR*v pdlq remhfwlyh lv wr fodvvli| rffxsdwlrqv/ zlwkrxw qhfhvvdulo| frq0
vlghulqj wkh mre frqwhqw ri wkh zrunhu/ dv rffxuv zlwk wkh judgh ohyhov1
Lq rughu wr fdswxuh erwk glphqvlrqv zh frpelqh wkh wzr udqnlqj v|vwhpv dqg
:
frqvlghu wkuhh udqnv ri wrs pdqdjhuv= Udqn 4 iru wkrvh zrunhuv fodvvlhg dv
wrs pdqdjhuv e| rqo| rqh ri wkh udqnlqj v|vwhpv +judgh ohyhov ru QFR,> Udqn
5 lv iru wkrvh fodvvlhg dv wrs pdqdjhuv e| erwk udqnlqj v|vwhpv> dqg Udqn 6
lv iru wkrvh lq Udqn 5 zkr duh fodvvlhg dw wkh kljkhvw klhudufklfdo ohyho e| wkh
QFR +wkrvh lqfoxghg lq wkh vxejurxs ri wrs h{hfxwlyhv,1 Wkh ydvw pdmrulw|
ri wkh wrs pdqdjhuv/ 93 shu fhqw/ duh lq udqn 4 +wrs pdqdjhuv fodvvlhg dv
vxfk e| rqh ri wkh udqnlqj v|vwhpv,1 Rqo| rqh shufhqw duh lq udqn 6/ wkh rqh
forvhvw wr d FHR ghqlwlrq1
Wkh TS doorzv wr wudfn zlwk dffxudf| wkh wlplqj ri surprwlrqv jlyhq wkdw/
hyhu| |hdu/ wkh up kdv wr gluhfwo| uhsruw wkh gdwh ri odvw surprwlrq1 Fkl0
dssrul hw do +4<<<, vwxg| wkh surprwlrq ghflvlrqv ri wrs pdqdjhuv zlwklq d
vlqjoh up/ dqg xvh wkh up*v lqwhuqdo vfdoh wr lghqwli| surprwlrqv zlwklq
wklv qduurzo| ghqhg jurxs ri zrunhuv1 D surprwlrq ri d wrs pdqdjhu lq TS
uh hfwv d surjuhvvlrq ri wkh pdqdjhu*v fduhhu zlwklq wkh wrs ohyho/ zklfk frq0
yh|v lqirupdwlrq vlplodu wr wkh rqh xvhg lq Fkldssrul hw do1 lq d pxowl0up
iudphzrun1
516 Lqglfdwruv ri LOP sudfwlfhv
Wkh nh| yduldeohv lq wkh sdshu duh wkh lqglfdwruv ri LOP sudfwlfhv1 Ilupv wkdw
uhfxuuhqwo| kluh qhz zrunhuv iru hyhu| klhudufklfdo od|hu wkdw lv/ gr qrw kdyh
vwulfw sruwv ri hqwu| fdq eh frqvlghuhg wr eh pruh rshq/ lq wkh vhqvh wkdw
wkhlu zrunhuv +wkh lqvlghuv ru lqfxpehqwv, duh qrw lqvxodwhg iurp wkh h{whuqdo
oderxu pdunhw +Od}hdu dqg R|hu/ 5336,1 Lq dq LOP hqylurqphqw zdjhv duh ghwhuplqhg lqwhuqdoo| dqg pd| eh iuhh iurp
pdunhw suhvvxuh1 Lq wkh zruglqjv ri Grhulqjhu dqg Slruh +4<:5,/ zrunhuv duh qrw
vxemhfw wr wkh ydjdulhv ri wkh h{whuqdo oderu pdunhw1
;
Lq rughu wr txdqwli| wkh h{lvwhqfh ri up fkdudfwhulvwlfv frqvlvwhqw zlwk LOP/
zh qhhg wr frqvlghu glhuhqw ihdwxuhv wkdw pd| |lhog vxfk dq hqylurqphqw1 Lw lv
qrw hdv| wr lghqwli| LOP sudfwlfhv/ exw wkh h{lvwlqj olwhudwxuh fdq eh xvhg dv d
jxlgh wr shuirup wklv wdvn1 Wkh prvw frpprq h{sodqdwlrqv iru wkh irupdwlrq ri
LOP duh= wkh h{lvwhqfh ri up0vshflf kxpdq fdslwdo +Ehfnhu/ 4<95,> prelolw|
frvwv ru pdwfklqj hhfwv +Mrydqrylf/ 4<:<,> ru vshflf v|vwhpv ri lqfhqwlyhv
+Od}hdu/ 4<:<,1 Doo ri wkhvh dvshfwv uhvxow lq oderxu pdqdjhphqw sudfwlfhv lq
zklfk prvw klulqj dw kljk ohyhov lq wkh up duh iurp zlwklq dqg/ dv d uhvxow/
wkhvh upv zloo eh fkdudfwhulvhg e| wkh h{lvwhqfh ri vshflf sruwv ri hqwu|
+Od}hdu dqg R|hu/ 5336, dqg wkh| pd| dovr gholyhu srvlwlyh +dqg uhodwlyho|
kljkhu wkdq dyhudjh, uhwxuqv wr whqxuh +Mrydqrylf/ 4<:<,1
Zh xvh wzr glhuhqw lqglfdwruv ri LOP sudfwlfhv1 Wkh uvw lqglfdwru lv d sur{|
iru wkh h{lvwhqfh ri sruwv ri hqwu| lq wkh up1 Dw dq h{wuhph/ wkh h{lvwhqfh
ri sruwv ri hqwu| zrxog lpso| wkdw doo qhz hpsor|hhv hqwhu wkh up dw wkh
orzhvw ohyho dqg kljkhu ohyhov duh oohg h{foxvlyho| iurp zlwklq wkh up1 Wr
fdswxuh wkh h{lvwhqfh ri sruwv ri hqwu| zh iroorz Od}hdu dqg R|hu +5336,1 Wkh
lghqwlfdwlrq ri sruwv ri hqwu| uhtxluhv wkdw prvw ri wkh up*v qhz hpsor|hhv
hqwhu wkh up dw d vshflf klhudufklfdo ohyho1 Wkhuh lv qr vshflf wkuhvkrog
iru wklv sursruwlrq1 Wkxv zh ghqh d gxpp| yduldeoh wkdw htxdov rqh li wkh
iudfwlrq ri zrunhuv hqwhulqj wkh up lq rqh ri wkh klhudufklfdo ohyhov lv juhdwhu
wkdq 83 shu fhqw1 Wkh ghqlwlrq ri wklv yduldeoh lv edvhg rq dyhudjh hqwu| dw
hdfk ri wkh vhyhq orzhu klhudufklfdo ohyhov +h{foxglqj wkh wrs pdqdjhu ohyho,/
dv ghqhg e| wkh judgh ohyhov/ gxulqj wkh zkroh vdpsoh shulrg1 Wdeoh 4 vkrzv
wkdw wkh sruwv ri hqwu| lqglfdwru lv rq dyhudjh htxdo wr f=..D1
Wkh vhfrqg rqh gudzv rq wkh uhwxuqv wr whqxuh olwhudwxuh1 Lw lv vlpso| d up0
vshflf zdjh0whqxuh hodvwlflw|/ hvwlpdwhg iurp d up ohyho orj0zdjh uhjuhvvlrq1
<
Zh xvh gdwd iurp wkh uvw |hdu wkh up lv revhuyhg lq TS1 Zh uhvwulfw rxu
hvwlpdwlrq wr upv kdylqj pruh wkdq 53 zrunhuv dqg wkh vshflf prgho lv=
*? zlm ' f n m *?EWlm n m [ n %lm > m ' > ===> M
zkhuh zlm lv wkh zdjh ri zrunhu l lq up m dqg m lv wkh up0vshflf zdjh0
whqxuh hodvwlflw|1 Wklv up0vshflf hodvwlflw| lv xvhg dv dq h{sodqdwru| yduldeoh
lq wkh hvwlpdwlrq ri wkh surprwlrq suredelolw|1 Zh lqwhusuhw d odujhu hodvwlf0
lw| ri zdjhv zlwk uhvshfw wr whqxuh dv d vwurqjhu lqglfdwlrq ri dq LOP1 Wkh
yhfwru [ frpsulvhv djh +zlwk d vhfrqg rughu sro|qrpldo,/ dqg gxpplhv iru
hgxfdwlrq/ jhqghu/ dqg klhudufklfdo ohyhov1 e
6
Wkh surprwlrq hyhqw
Zkdw duh wkh ghwhuplqdqwv ri wkh zrunhu*v surprwlrqB W|slfdoo|/ wkh zrunhu
lv surprwhg li khu shuirupdqfh lv juhdwhu wkdq d wkuhvkrog ohyho +Jleerqv dqg
Zdogpdq/ 4<<<d> Od}hdu/ 5337,1 Suhylrxv olwhudwxuh rq wkh surprwlrq hyhqw
whqg wr dvvrfldwh lw rq lqglylgxdo dwwulexwhv vxfk dv delolw|/ hgxfdwlrq dqg
whqxuh +vhh Jleerqv dqg Zdogpdq/ 4<<<e dqg Shujdplw dqg Yhxp/ 4<<<,1 Lw
zloo dovr ghshqg rq wkh up vl}h dqg shuirupdqfh lq wkh pdunhw1 Lq dgglwlrq/
wkh qxpehu ri fr0zrunhuv frpshwlqj iru d surprwlrq fdq dovr lq xhqfh wkh
rggv ri ehlqj surprwhg +Od}hdu dqg Urvhq/ 4<;4,1
Wkh pdlq remhfwlyh ri wklv vhfwlrq lv wr vwxg| wkh surprwlrq ghflvlrq/ qdpho|
wr zkdw h{whqw wklv ghflvlrq lv lq xhqfhg e| wkh up*v LOP ihdwxuhv1 Zh duh
e
Doo wkh zrunhuv hpsor|hg lq d up duh xvhg lq wkh hvwlpdwlrq ri wkh zdjh uh0
juhvvlrq vshflf wr wkdw up1 Wkh uhvwulfwlrq lpsrvhg lq wkh qxpehu ri zrunhuv lv
mxvwlhg e| wkh qxpehu ri frh!flhqwv wr eh hvwlpdwhg1
43
qrw fkdudfwhulvlqj wkh srwhqwldo wudgh0r wkdw wkh hpsor|hu idfhv zkhq oolqj
lq d vorw= wr kluh iurp rxwvlgh ru wr surprwh iurp lqvlgh> exw udwkhu wkh idfw wkdw
wkhuh duh glhuhqw ghjuhhv ri LOP dqg krz lw uhodwhv wr wkh xvh ri surprwlrqv
dv dq hohphqw ri wkh up*v shuvrqqho srolflhv1
614 Prgho vshflfdwlrq
Wkh vwxg| ri wkh surprwlrq hyhqw ohdgv wr wkh iroorzlqj hpslulfdo vshflfdwlrq1
Ghqh dq xqrevhuyhg odwhqw yduldeoh \lwW dv
\lwW ' [lw n %lw
+4,
zkhuh [lw lv d yhfwru ri lqglylgxdo dqg up fkdudfwhulvwlfv/ lv d yhfwru ri
frh!flhqwv wr eh hvwlpdwhg/ %lw lv dq l1l1g1 glvwxuedqfh/ lqghshqghqw ri wkh [lw 1
Wkh yduldeoh \lwW ghwhuplqhv wkh rffxuuhqfh ri d surprwlrq1 Qh{w/ ghqh wkh
revhuydeoh surprwlrq hyhqw/ \lw / dv
;
A
A
A
A
W
A
A
? > li \lw A f
\lw ' A
A
A
+5,
A
A
W
A
= f> li \lw f
Li zh dgglwlrqdoo| dvvxph wkdw wkh %lw duh qrupdoo| glvwulexwhg/ wkh surprwlrq
hyhqw fdq eh vwxglhg e| dsso|lqj d surelw prgho dv ghqhg lq htxdwlrqv +4,
dqg +5,1 Wklv hpslulfdo vshflfdwlrq lv vlplodu wr zkdw xvxdoo| dsshduv lq
uhodwhg olwhudwxuh +h1j1/ Duljd/ Rknxvd dqg Euxqhoor/ 4<<<> Shujdplw dqg Yhxp
4<<<> dqg Zlqwhu0Hephu dqg ]zhlp oohu/ 4<<:,1 Wkh pdlq dgydqwdjh ri rxu
dssurdfk lv wkh idfw wkdw wkh gdwdvhw xvhg lq wkh suhvhqw vwxg| frpsulvhv
44
orqjlwxglqdo lqirupdwlrq rq pxowlsoh upv/ zlwk frpsohwh zrun irufh uhfrugv1
Wkh vhw ri h{sodqdwru| yduldeohv [lw lqfoxghv erwk lqglylgxdo dqg up2pdwfk
fkdudfwhulvwlfv1 Wkh lqglylgxdo fkdudfwhulvwlfv frqvlghuhg zhuh wkh iroorzlqj=
whqxuh +zlwk d wklug rughu sro|qrpldo,> wlph vlqfh odvw surprwlrq +zlwk d
wklug rughu sro|qrpldo,> dq lqwhudfwlrq whup ri wkhvh wzr yduldeohv> hgxfdwlrq
+ghqhg dv wkh kljkhvw ohyho dwwdlqhg sulpdu|/ vhfrqgdu|/ dqg whuwldu|,>
djh dqg djh vtxduhg> wzr gxpplhv iru wkh wrs pdqdjhu*v udqnv1 Lq dgglwlrq/
vhyhudo yduldeohv fdswxuh up fkdudfwhulvwlfv= glphqvlrq/ phdvxuhg e| wkh +orj,
qxpehu ri hpsor|hhv dqg wkh +orj, qxpehu ri wrs pdqdjhuv> lqgxvwu| +dw wzr
gljlwv frgh,> dqg wkh deryh phqwlrqhg lqglfdwruv ri up rshqqhvv sruwv
ri hqwu| dqg zdjh whqxuh hodvwlflw|1
615 Uhvxowv
Wkh surprwlrq hyhqw lv vwxglhg xvlqj wklv hpslulfdo prgho dqg wkh wzr vdp0
sohv ghvfulehg lq Vhfwlrq 51 Wkh Surelw prgho uhvxowv suhvhqwhg lq Wdeoh 5 duh
iru wkh vdpsoh ri doo pdqdjhuv/ uhjdugohvv ri wkh qxpehu ri |hduv wkh frpsd0
qlhv wkh| zrun iru duh revhuyhg gxulqj wkh 4<<40<; shulrg1 Wdeoh 6 suhvhqwv
wkh uhvxowv rewdlqhg zlwk wkh vpdoohu vdpsoh/ lq zklfk zh lqfoxgh rqo| wkrvh
pdqdjhuv revhuyhg gxulqj wkh zkroh ;0|hdu shulrg1
Lqvhuw Wdeohv 5 dqg 6 khuh
Zh duh hvshfldoo| lqwhuhvwhg lq wkh frh!flhqwv ri wkh yduldeohv wkdw phdvxuh wkh
ghjuhh ri up rshqqhvv/ whqxuh/ dqg wlph vlqfh odvw surprwlrq1 Wkh lqfoxvlrq
ri wkh odvw yduldeoh pdnhv lw srvvleoh wr lqwhusuhw wkh uhvxowv dv d surprwlrq
45
kd}dug1 D Hdfk ri wkh prghov suhvhqwhg lq Wdeohv 5 dqg 6 frqvlghu d glhuhqw
yduldeoh ri wkh up LOP ghjuhh1 Doo wkh vshflfdwlrqv lqfoxgh d vhw ri lqgxvwu|
dqg |hdu gxpplhv1 Ryhudoo/ wkh glhuhqw vshflfdwlrqv gholyhu wkh vdph pdlq
uhvxowv1
Wkh yduldeoh wkdw fdswxuhv wkh hodsvhg wlph vlqfh odvw surprwlrq doorzv xv wr
dqdo|vh wkh vkdsh ri surprwlrq olnholkrrg ryhu wlph1 Lq rughu wr fdswxuh srv0
vleoh qrqolqhdu hhfwv zh dgghg d txdgudwlf dqg fxelf whupv ri wklv yduldeoh/
dqg erwk whupv suryhg wr eh vljqlfdqwo| glhuhqw iurp }hur1 Wkh wlph ghshq0
ghqfh ri wkh surprwlrq hyhqw lv vkrzq wr eh txlwh lpsruwdqw1 Wkh xqghuo|lqj
lpsdfw rq wkh surprwlrq suredelolwlhv iru d qhzo| kluhg pdqdjhu lv vkrzq lq
Iljxuh 4/ wkdw suhvhqwv wkh lqglylgxdo*v surprwlrq suredelolw| dv d ixqfwlrq
ri hodsvhg wlph vlqfh odvw surprwlrq1 Wkh xsshu fxuyh uhsuhvhqwv d up zlwk
sruwv ri hqwu|/ dqg wkh orzhu fxuyh d up zlwkrxw sruwv ri hqwu|1 S
Wkh surprwlrq suredelolw| lv ghfuhdvlqj zlwk wlph vlqfh odvw surprwlrq/ zkloh
gxulqj wkh uvw ihz |hduv wkh surprwlrq suredelolw| lv fohduo| deryh 53(/
diwhu yh |hduv zlwkrxw d surprwlrq wklv suredelolw| lv kdoyhg dqg lw lv kdoyhg
djdlq gxulqj wkh qh{w yh |hduv/ ehlqj durxqg 8( diwhu 43 |hduv zlwkrxw d
surprwlrq1 Wkh lqwhuhvwlqj ihdwxuh ri wklv uhvxow lv wkdw qrw ehlqj surprwhg lv
d qhjdwlyh vljq rq wkh wrs pdqdjhu*v ixwxuh surprwlrq survshfwv/ srlqwlqj wr
wkh h{lvwhqfh ri d ohduqlqj surfhvv rq lqglylgxdo delolwlhv1
Lqvhuw Iljxuh 4 khuh
D
Lq idfw/ qrw rqo| wkh irupxodwlrq ri d gxudwlrq prgho kdv d vlplodu lqwhusuhwdwlrq
vlqfh lw lv d elqdu| prgho/ exw dovr wkh hvwlpdwlrq ri d sursruwlrqdo kd}dug prgho
ri wkh surprwlrq hyhqw |lhogv vlplodu txdolwdwlyh uhvxowv +vhh Eryhu/ Duhoodqr dqg
Ehqwrolod/ 5335,1
S Wkh fxuyhv suhvhqwhg lq Iljxuhv 4/ 5 dqg 6 duh edvhg rq wkh hvwlpdwlrq uhvxowv ri
prgho +4, lq Wdeoh 51
46
Lq Iljxuh 5 zh suhvhqw wkh sdwwhuq ri surprwlrq suredelolwlhv iru wzr srvvleoh
fduhhu sdwkv= wrs pdqdjhuv zkr duh dozd|v surprwhg +zlwk wlph vlqfh odvw
surprwlrq htxdo wr }hur,> dqg wrs pdqdjhuv zkr zhuh qrw surprwhg lq wkh
suhylrxv |hdu +zlwk wlph vlqfh odvw surprwlrq htxdo wr rqh |hdu,1 Wkhuh lv
vrph hylghqfh ri d idvw0wudfn ehkdylrxu lq wkh surprwlrq ghflvlrqv lqvlgh wkh
up1 Djdlq/ d surprwlrq lq d jlyhq |hdu lqfuhdvhv wkh suredelolw| ri surprwlrq
lq wkh iroorzlqj |hdu1 Krzhyhu/ wkh suhvhqfh ri d idvw0wudfn hhfw idghv dzd|
ryhu wlph/ dv pruh0whqxuhg pdqdjhuv duh ohvv iuhtxhqwo| surprwhg1
Lqvhuw Iljxuh 5 khuh
D vlplodu sdwwhuq fdq eh revhuyhg iurp Iljxuh 61 Zh frpsduh wkh glhuhqfhv lq
surprwlrq suredelolwlhv ehwzhhq d pdqdjhu surprwhg hyhu| |hdu +vrolg olqh lq
Iljxuh 5, zlwk wkh surprwlrq suredelolwlhv ri d pdqdjhu qhyhu surprwhg +vrolg
olqh lq Iljxuh 4,1 Wkh kxps0vkdshg fxuyh kdv dq lqwhuhvwlqj lqwhusuhwdwlrq
lq whupv ri wkh h{lvwlqj olwhudwxuh rq fduhhu surprwlrqv1 Lq wkh frqwh{w ri
Jleerqv dqg Zdogpdq +4<<<d,/ wkh uhvxowv srlqw wr wkh vhuldo fruuhodwlrq ri wkh
surprwlrq hyhqw= Iljxuh 6 vkrzv wkdw d wrs pdqdjhu wkdw kdv ehhq surprwhg
hyhu| |hdu +vwdu, kdv d pxfk kljkhu suredelolw| ri ehlqj surprwhg lq wkh
iroorzlqj |hdu wkdq wkh rqh wkdw zdv qhyhu surprwhg +orvhu,1 Krzhyhu/ Iljxuh
6 dovr vkrzv wkdw wkh glhuhqfh lq wkh surprwlrq suredelolw| lqfuhdvhv xqwlo 43
|hduv ri whqxuh dw wkh up dqg wkhq voljkwo| ghfuhdvhv1 Lq dq hqylurqphqw ri
lpshuihfw lqirupdwlrq/ surprwlrq lghqwlhv wkh kljkhu0delolw| pdqdjhuv/ exw
dv wkh hpsor|hu ohduqv derxw wkhlu delolwlhv/ wklv w|sh ri idvw0wudfn hhfw whqgv
wr vorz grzq1 .
Lqvhuw Iljxuh 6 khuh
.
Vhh Ehuqkdugw +4<<8, dqg Plojurp dqg Rvwhu +4<;:, iru d vlplodu dujxphqw frq0
fhuqlqj wkh idvw0wudfn hhfw lq d iudphzrun zlwk lpshuihfw lqirupdwlrq1
47
Wkh nh| uhvxowv iurp Wdeohv 5 dqg 6 duh wkh hvwlpdwhg frh!flhqwv rq glhuhqw
LOP lqglfdwruv1 Wkh pdlq qglqj lv wkdw upv zlwk vwurqjhu LOP ihdwxuhv duh
pruh olnho| wr surprwh lqvlghuv1 Wklv uhvxow lv urexvw lq erwk vshflfdwlrqv ri
wkh prgho/ zklfk fruuhvsrqg wr glhuhqw LOP lqglfdwruv1 Wkh uvw froxpq xvhv
wkh sruwv ri hqwu| lqglfdwru1 Ilupv lghqwlhg kdv kdylqj sudfwlfhv frqvlvwhqw
zlwk LOP duh vljqlfdqwo| pruh olnho| wr surprwh lqvlghuv1 Prgho 5 xvhv wkh
vwhhsqhvv ri wkh up whqxuh0zdjh suroh dv LOP lqglfdwru1 Ilupv zlwk odujhu
uhwxuqv wr whqxuh vkrz d kljkhu suredelolw| ri surprwlrq/ d uhvxow wkdw lv
frqvlvwhqw zlwk wkh lqfhqwlyhv wkhrulhv ri zdjh irupdwlrq1
Ryhudoo/ wkhvh uhvxowv srlqw wr wkh lpsruwdqfh ri lqfoxglqj yduldeohv wkdw fds0
wxuh wkh ghjuhh ri LOPv zkhq lqyhvwljdwlqj ohduqlqj hhfwv lq fduhhu sdwwhuqv/
dqg wr wkh lpsruwdqfh ri up rshqqhvv lq dqdo|vlqj idvw wudfn ru hduo| vwduwhu
hhfwv1
Zh fdq wdnh dqrwkhu orrn dw wkhvh uhvxowv xvlqj Iljxuh 41 Wklv jxuh vkrzv
wkdw upv kdylqj sruwv ri hqwu| duh pruh olnho| wr surprwh wrs pdqdjhuv/
exw wkdw wklv glhuhqfh idghv dzd| zlwk wkh dffxpxodwlrq ri whqxuh dqg wlph
vlqfh odvw surprwlrq1 Wkxv/ lw dsshduv wkdw rxu phdvxuhv ri up rshqqhvv duh
slfnlqj xs wkh ghjuhh ri lqwhuqdo oderxu pdunhw irupdwlrq lq wkh up dqg
wkdw wkh h{lvwhqfh ri vxfk dq lqwhuqdo pdunhw kdv d vljqlfdqw lpsdfw rq wkh
surprwlrq ri wrs ohyho zrunhuv iurp zlwklq wkh up1
7
Surprwlrq g|qdplfv
Zkdw lv wkh uhodwlrqvkls ehwzhhq vxevhtxhqw fduhhu hyhqwvB Zkdw duh wkh gh0
whuplqdqwv ri surprwlrqv ryhuwlph/ qdpho| krz gr suhylrxv surprwlrq hyhqwv
48
khos lq suhglfwlqj ixwxuh surprwlrqvB Wkh remhfwlyh ri wklv vhfwlrq lv wr vwxg|
wkh lq xhqfh ri sdvw fduhhu hyhqwv rq ixwxuh surprwlrq suredelolwlhv1
Wkh wrs pdqdjhuv fdq eh surprwhg ru qrw lq shulrg rqh1 Lq wkh vhfrqg/ wkh
vdph ghflvlrq idfhv wkh hpsor|hu= wr surprwh wkh zrunhu +djdlq, ru qrw1 Wkxv/
lq hyhu| shulrg wkh hpsor|hu kdv wr ghflgh wkh ixwxuh fduhhu ri klv hpsor|hhv1
Krz gr wkhvh ghflvlrqv ghshqg rq wkh lqglylgxdo dwwulexwhv kxpdq fdslwdo
dqg delolw| dqg/ deryh doo/ wkh up LOP sudfwlfhvB Lq d g|qdplf shuvshfwlyh/
zkhq orrnlqj dw d zrunhu*v surprwlrq survshfwv/ rqh pxvw frqvlghu khu sdvw
fduhhu rxwfrphv/ qdpho|/ wkh wlplqj ri sdvw surprwlrqv1
Frqvlghu wzr zrunhuv zkr duh dvvljqhg wr wkh vdph klhudufklfdo ohyho lq shulrg
rqh1 Lq wklv shulrg/ rqh lv surprwhg dqg wkh rwkhu lv qrw1 Lq shulrg wzr/ li
wkh zrunhu suhylrxvo| surprwhg lv qrw surprwhg vkh lv lghqwlhg dv dq hduo|
vwduwhu/ dqg wkh suhylrxvo| xqsurprwhg zrunhu lv surprwhg/ ehlqj lghqwlhg
dv d odwh ehjlqqhu +vhh Iljxuh 7,1 Lq wkh iudphzrun ri Fkldssrul hw do1 +4<<<,
odwh ehjlqqhuv kdyh ehwwhu surprwlrq survshfwv lq wkh ixwxuh1
Lqvhuw Iljxuh 7 khuh
Zh dlp dw vwxg|lqj wkh qhvwhg vwuxfwxuh ri wkh up*v ghflvlrq surfhvv1 Jlyhq
wkdw wkh ghflvlrq wr surprwh d zrunhu lq rqh shulrg lv fohduo| uhodwhg zlwk wkh
surprwlrq hyhqwv revhuyhg lq wkh suhylrxv shulrgv/ wkh surprwlrq ghflvlrqv
fdq eh prghoohg dv d vhtxhqwldo sureohp1 Zh prgho wkh surprwlrq ghflvlrq
zlwk d udqgrp xwlolw| prgho +UXP,/ zklfk fdq eh hvwlpdwhg e| wkh frqgl0
wlrqdo orjlw whfkqltxh lqwurgxfhg e| PfIdgghq +4<:6,1 UXPv kdyh ehhq xvhg/
iru h{dpsoh/ lq vwxglhv ri fkrlfhv dprqj d glvfuhwh vhw ri dowhuqdwlyhv vxfk
dv vfkrro fkrlfh +Prqwjrphu|/ 5335, dqg pljudwlrq ghflvlrqv +Nqdss hw do1/
5334,1 Wkh udqgrp xwlolw| dssurdfk dvvxphv wkdw wkh lqglylgxdo +lq wklv fdvh
49
wkh up, fkrrvhv rqh rswlrq +wr surprwh ru qrw wr surprwh, iurp dprqj
doo ri wkh rswlrqv lq wkh fkrlfh vhw vkh idfhv1 Frpsdulqj fkdudfwhulvwlfv ri
wkh fkrvhq rswlrqv zlwk wkrvh ri uhmhfwhg rqhv lqglfdwhv zklfk fkdudfwhulvwlfv
frqwulexwh wr wkh olnholkrrg ri ehlqj fkrvhq1
Wkh fkrlfh ri d UXP prgho lq wkh suhvhqw frqwh{w lv glfwdwhg e| wkh dvvxps0
wlrq wkdw rxu up ohyho gdwd duh jhqhudwhg e| d udqgrp vhohfwlrq iurp d srs0
xodwlrq zlwk khwhurjhqhrxv wdvwhv dv lq PfIdgghq +4<;4,1 H Wkh dvvxpswlrq
ri upv kdylqj khwhurjhqrxv wdvwhv lv frpsdwleoh zlwk wkh srvwxodwh ri surw
pd{lpl}dwlrq vlqfh zh revhuyh d zlgh ydulhw| ri lqwhuqdo upv rujdql}dwlrq
ohdglqj wr wkh vdph xowlpdwh jrdo1 Wkh vwrfkdvwlf surshuw| ri UXP lqwr wkh
fkrlfh sureohp lv/ lq wklv vhqvh/ d zd| wr doorz xqrevhuyhg up khwhurjhqhlw|
lqwr wkh prgho1
Gxh wr wkh vwuxfwxuh ri wkh lqirupdwlrq dydlodeoh lq wkh gdwd dqg wkh remhf0
wlyh ri lghqwli|lqj glhuhqw w|shv ri fduhhuv/ qdpho| wkh hduo| vwduwhuv dqg odwh
ehjlqqhuv/ zh iroorz Fkldssrul ho do1 +4<<<, dqg frqvlghu wkuhh shulrgv1 b Wkh
suredelolw| ri surprwlrq lq wkh uvw shulrg lv S ureEsurp/ zkhuh surp lv
d glfkrwrprxv yduldeoh htxdo wr rqh li wkh hpsor|hh zdv surprwhg lq wkh uvw
wkuhh |hduv1 Lq wkh vhfrqg shulrg ri wkuhh |hduv/ wkh surprwlrq suredelolw|
H
Zh wkdqn d uhihuhh iru srlqwlqj rxw wklv lqwhusuhwdwlrq ri wkh UXP prgho iru wkh
surprwlrq ghflvlrq sureohp1
b Wkh odwh0ehjlqqhu surshuw| lqyroyhv wkuhh vxeshulrgv/ vr zh qhhg wr vsolw wkh gdwd
dffruglqjo|1 Wklv lv dq lpsruwdqw wdvn ri wkh hpslulfdo h{huflvh/ vlqfh wkhuh lv d orw
ri ohhzd| wr euhdn wkh ; |hduv ri gdwd dydlodeoh lqwr wkuhh shulrgv1 Wkhuh lv dq
reylrxv wudgh0r lq whupv ri wkh glphqvlrq ri hdfk shulrg1 Wkh wkhru| whoo xv wkdw
wkh shulrg vkrxog eh orqj hqrxjk vr wkdw surprwlrqv rffxu dqg wkh hhfw ri qr
ghprwlrqv +zklfk lv wkh fdvh lq rxu gdwd vhw, kdv wlph wr dsshdu dv d grzqzdug
uljlglw| skhqrphqrq1 Krzhyhu/ li wkh shulrg lv orqj hqrxjk prvw zrunhuv zloo hqg xs
ehlqj surprwhg/ dqg surprwlrq zloo orvh lwv lqirupdwlrq frqwhqw1 Zh wulhg zlwk vrph
sduwlwlrqv ri wkh ; shulrgv lq wkuhh shulrgv dqg wkh rqh suhvhqwhg zdv wkh rqh wkdw
doorzhg wr lghqwli| wkh irxu fduhhu sdwkv frqvlghuhg khuh= fkdpslrqv/ hduo|0vwduwhuv/
odwh0ehjlqqhuv dqg orvhuv1
4:
lv frqglwlrqdo rq wkh uvw shulrg surprwlrq rxwfrph/ wklv fdq eh ghqhg dv
S ureEsurp2msurp1 Lq wkh vdph zd|/ wkh frqglwlrqdo surprwlrq suredelolw|
lq wkh wklug shulrg +wzr |hduv, lv S ureEsurpmsurp> surp21 Ilqdoo|/ wkh
xqfrqglwlrqdo suredelolw| ri wkh revhuyhg fkrlfh dw wkh erwwrp ohyho +fruuh0
vsrqglqj wr wkh odvw shulrg, lv
S ureEsurp> surp2> surp ' S ureEsurpmsurp> surp2 S ureEsurp2msurp S ureEsurp
Iljxuh 7 suhvhqwv wkh ghflvlrq wuhh idfhg e| wkh hpsor|hu zkr ghflghv wr
surprwh ru qrw wr surprwh dq hpsor|hh lq rughu wr pd{lpl}h wkh up remhfwlyh
ixqfwlrq1 Xs xqwlo shulrg wkuhh/ zh fdq lghqwli| irxu fduhhu w|shv= wkh orvhu d wrs pdqdjhu zkr lv qrw surprwhg lq wkh uvw wzr shulrgv> wkh hduo| vwduwhu
surprwhg lq shulrg rqh dqg qrw surprwhg lq shulrg wzr> wkh odwh ehjlqqhu
qrw surprwhg lq shulrg rqh/ exw surprwhg lq shulrg wzr> dqg wkh fkdpslrq
zrunhuv surprwhg lq shulrg rqh dqg djdlq lq shulrg wzr1
Irupdoo|/ wkh wkuhh ohyho qhvwhg orjlw prgho prglhg wr rxu vshflfdwlrq lv
dv iroorzv1 Zh vwduw e| lqgh{lqj wkh uvw0ohyho dowhuqdwlyh dv l/ wkh vhfrqg0
ohyho dowhuqdwlyh dv m/ dqg wkh erwwrp0ohyho dowhuqdwlyh dv n1 Ohw [lmn / \lm
dqg ]l uhihu wr wkh yhfwru ri h{sodqdwru| yduldeohv vshflf wr hdfk ri wkh
wkuhh fdwhjrulhv El> m> n/ El> m dqg El/ uhvshfwlyho|1 Zh zdqw wr hvwlpdwh wkh
iroorzlqj suredelolwlhv=
Slmn ' Snƒlm Sm ƒl Sl
Qrwh wkdw wkh frqglwlrqdo suredelolw| Snƒlm zloo lqyroyh rqo| wkh sdudphwhuv 4;
dvvrfldwhg zlwk wkh yduldeohv lq [/ dqg fdq eh zulwwhq dv=
h [lmn
Snƒlm ' [
+6,
h [lmq
Zkhq rqh pryhv xs wr kljkhu wuhh ohyhov wkh ghshqghqfh iurp orzhu ohyho
ghflvlrqv lv wdnhq lqwr dffrxqw e| wkh lqfoxvlyh ydoxhv/ zklfk duh ghqhg iru
erwk fdwhjrulhv El> m dqg El1 Wkh uvw +vd| Llm , zloo ghshqg h{foxvlyho| rq /
zkloh wkh vhfrqg +vd| Ml , zloo ghshqg rq wkh vhfrqg ohyho yduldeohv lq yhfwru
\ / dqg wkh Llm lqfoxvlyh ydoxhv1 Wkhvh lqfoxvlyh ydoxhv fdq eh ghqhg dv=
Llm ' *?
+
[
h
,
[lmq
q
dqg
+
,
[ E \ n L Ml ' *?
h lp lp lp
q
Xvlqj wkhvh h{suhvvlrqv iru wkh lqfoxvlyh ydoxhv zh fdq rewdlq wkh fkrlfh sure0
delolwlhv ri hdfk qhvw lq wkh vhfrqg dqg uvw ohyhov dv iroorzv=
hE \lm n lm Llm hE \lp n lpLlp p
Sm ƒl ' [
+7,
dqg
hE]l nl Ml Sl ' [ E] n M h o o o
o
4<
+8,
Qrwh wkh frqglwlrqdo fkdudfwhulvwlf ri suredelolwlhv lq +6,/ +7, dqg +8,/ zklfk
lv wkh pdlq glvwlqfwlyh ihdwxuh ri wkh prgho1
Wkh qhvwhg orjlw prgho hvwlpdwhv hdfk ri wkh wkuhh suredelolwlhv olvwhg deryh/
dorqj zlwk wkh lqfoxvlyh ydoxhv iru wkh wzr fdwhjrulhv wkdw ghqh d ghflvlrq
qrgh rq wkh zrunhu*v surprwlrq sdwk1 Wkh lqfoxvlyh ydoxh uhsuhvhqwv wkh xwlolw|
ri kdylqj doo wkh ixwxuh surprwlrq ghflvlrqv dydlodeoh dw hdfk qrgh1 Li wkh
frh!flhqw ri wkh lqfoxvlyh ydoxh lv rqh wkhuh lv qr qhvwlqj ri wkh ghflvlrqv dqg
wkh suredelolw| ri ehlqj surprwhg lq shulrg wkuhh lv mxvw wkh xqfrqglwlrqdo
suredelolw| ri ehlqj surprwhg lq hdfk shulrg/ zklfk lv vlpso| wkh surgxfw ri
wkh surprwlrq suredelolwlhv lq hdfk shulrg1
Wkh uhvxowv iurp wkh hvwlpdwlrq ri wkh qhvwhg orjlw prgho duh suhvhqwhg lq
Wdeoh 71 Lq wkh uvw ohyho zh lqfoxgh lqglylgxdo vshflf yduldeohv djh/ hgx0
fdwlrq dqg wlph vlqfh odvw surprwlrq dqg up vshflf yduldeohv sruwv ri
hqwu| lqglfdwru/ orj qxpehu ri zrunhuv dqg orj qxpehu ri wrs pdqdjhuv1 Wkh
vhfrqg dqg wklug ohyhov lqfoxgh wkh hgxfdwlrq/ sruwv ri hqwu| dqg orj qxpehu
ri wrs pdqdjhuv yduldeohv1 Wkh yduldeohv djh dqg wlph vlqfh odvw surprwlrq
zhuh h{foxghg iurp ohyhov wzr dqg wkuhh vlqfh wkh vhtxhqwldo vwuxfwxuh ri wkh
hpslulfdo prgho dffrxqwv iru wkhlu hyroxwlrq1
Lqvhuw Wdeoh 7 khuh
Lq wkh vshflfdwlrq ri wkh prgho suhvhqwhg lq Wdeoh 7 wkh lqfoxvlyh ydoxh*v
sdudphwhuv duh glhuhqw iurp rqh/ frquplqj wkh ydolglw| ri wkh sursrvhg
hfrqrphwulf prgho1 f Dgglwlrqdoo|/ wkh hvwlpdwhg lqfoxvlyh ydoxh sdudphwhuv
duh doo zlwklq wkh xqlw lqwhuydo/ d qhfhvvdu| frqglwlrq iru frqvlvwhqf| ehwzhhq
wkh qhvwhg orjlw prgho dqg UXP/ dv vkrzq lq PfIdgghq +4<:;,1 Wkh OU whvw
f Vhh/
iru h{dpsoh/ Srlulhu +4<<9, dqg wkh uhihuhqfhv wkhuhlq iru d glvfxvvlrq1
53
uhsruwhg dw wkh erwwrp ri wkh wdeoh lv d whvw iru wkh qhvwlqj +khwhurvnhgdvwlflw|,
djdlqvw wkh qxoo k|srwkhvlv ri krprvnhgdvwlflw|1 Lw frpsxwhv wkh glhuhqfh
ehwzhhq wkh olnholkrrg ri d qrq0qhvwhg frqglwlrqdo orjlw prgho djdlqvw wkh
qhvwhg orjlw prgho olnholkrrg1 Wkh vwdwlvwlf kdv d ydoxh ri 4/;;;14 wkdw fohduo|
vxssruwv wkh xvh ri wkh qhvwhg orjlw prgho zlwk wkhvh gdwd1
Wkh lpsdfw ri up rshqqhvv lq wkh surprwlrq suredelolw| lv fohduo| glhuhqw
iru glhuhqw fduhhu sdwkv lqvlgh wkh up1 Wkh prvw lqwhuhvwlqj uhvxowv duh wkrvh
uhodwhg wr wkh surprwlrq suredelolwlhv ri odwh ehjlqqhuv yhuvxv hduo| vwduwhuv1
Wkh wrs pdqdjhuv zkr zhuh surprwhg lq wkh uvw shulrg exw qrw lq wkh vhfrqg
+hduo| vwduwhuv, duh pruh olnho| wr qrw eh surprwhg lq wkh wklug shulrg lq upv
wkdw kdyh h{solflw sruwv ri hqwu|1 Wkh uhyhuvh lv wuxh iru wkrvh fodvvlhg dv odwh
ehjlqqhuv> wkhvh duh pruh olnho| wr eh surprwhg lq wkh wklug shulrg lq upv
kdylqj LOPv1 Lq upv kdylqj sruwv ri hqwu| wkh suredelolw| ri d odwh ehjlqqhu
ehlqj surprwhg lv qrw vwdwlvwlfdoo| glhuhqw iurp wkh suredelolw| ri dq hduo|
vwduwhu qrw ehlqj surprwhg wkh whvw ri htxdolw| ri wkh wzr frh!flhqwv fdqqrw
eh uhmhfwhg1 Pruhryhu/ li zh frpsduh wkh suredelolw| ri surprwlrq ri lqglylg0
xdov fodvvlhg dv odwh ehjlqqhuv dqg hduo| vwduwhuv zh fdqqrw dffhsw wkh qxoo
k|srwkhvhv ri htxdolw|1 Wkhvh uhvxowv vkrz wkdw wkh fduhhu ri d zrunhu lqvlgh
dq rujdql}dwlrq lv d ixqfwlrq ri wkh up*v LOP fkdudfwhulvwlfv1 Lq sduwlfxodu/
upv zlwk LOP ihdwxuhv vkrz kljkhu lqflghqfh ri d odwh ehjlqqhu hhfw1
8
Glvfxvvlrq dqg frqfoxvlrqv
Zh vwxg| wkh surprwlrq srolflhv ri wrs pdqdjhuv iurp d odujh vdpsoh ri
Sruwxjxhvh frpsdqlhv1 Zh kdyh irxqg wkdw +l, d surprwlrq hyhqw lv qhjdwlyho|
lq xhqfhg e| whqxuh lq wkh up exw dw ghfuhdvlqj udwhv> +ll, wkh orqjhu d wrs
54
pdqdjhu uhpdlqv zlwkrxw d surprwlrq/ wkh ohvv olnho| vkh lv wr eh surprwhg/
exw wklv suredelolw| vwduwv wr slfn xs diwhu vrph wlph lq wkh wrs udqn ri wkh
up zlwkrxw d surprwlrq> +lll, pruh rshq upv wkrvh wkdw kdyh zhdnhu
lqwhuqdo oderxu pdunhwv duh ohvv olnho| wr surprwh lqvlghuv1 Dovr/ odujhu
frpsdqlhv zlwk odujhu pdqdjhu udqnv kdyh kljkhu surprwlrq udwhv/ wkxv d pl{
ri ohduqlqj prgho hhfwv dqg h!flhqf| dujxphqwv pljkw eh qhhghg wr ixoo|
h{sodlq wkh revhuyhg surprwlrq sdwwhuqv= rq rqh kdqg wkhuh lv wkh surfhvv ri
hpsor|hu*v ohduqlqj derxw wkh hpsor|hhv* delolwlhv> rq wkh rwkhu kdqg/ wkhuh
duh wkh lqwhuqdo surfhgxuhv wkdw dlp dw surylglqj lqfhqwlyhv wr wkh hpsor|hhv*1
Frqfhuqlqj wkh wrs pdqdjhuv* fduhhu g|qdplfv/ wkh uhvxowv doorz xv wr lghq0
wli| irxu w|shv ri fduhhu surjuhvvlrq= wkh orvhuv/ wkh hduo| vwduwhuv/ wkh odwh
ehjlqqhuv/ dqg wkh fkdpslrqv1 Dffruglqj wr d prgho ri ohduqlqj lqvlgh wkh
up/ zh h{shfw wkh h{lvwhqfh ri d odwh ehjlqqhu hhfw= pdqdjhuv qrw surprwhg
lq wkh uvw shulrg exw surprwhg lq wkh vhfrqg shulrg kdyh pruh fkdqfhv wr
eh surprwhg lq wkh ixwxuh wkdq pdqdjhuv surprwhg hduolhu lq wkh up1 Wkh
qhvwhg orjlw uhvxowv vkrz wkdw wklv ghshqgv rq wkh ghjuhh ri lqwhuqdo oderxu
pdunhw lq wkh up1 Lq upv wkdw xvh sruwv ri hqwu| wkh odwh ehjlqqhu hhfw
lv fohduhu1 Wklv lv dq lqwhuhvwlqj uhvxow jlyhq wkdw lw vkrzv wkh lpsruwdqfh ri
rshqqhvv lq wkh ohduqlqj hhfw rq surprwlrqv1
Ixwxuh uhvhdufk vkrxog h{whqg wklv dqdo|vlv wr wkh frqvlghudwlrq ri zdjh g|0
qdplfv dvvrfldwhg zlwk surprwlrq hyhqwv1 Wklv lv dq lpsruwdqw wrslf vlqfh wkh
lqvxodwlrq ri zrunhuv iurp wkh h{whuqdo oderxu pdunhw fdq eh wkh uhvxow ri d
zdjh srolf| wkdw/ dorqj zlwk vshflf surprwlrq srolflhv/ lqfuhdvhv zdjhv deryh
wkrvh ri wkh rxwvlgh pdunhw1
55
Uhihuhqfhv
^4` Duljd/ N1/ \1 Rknxvd/ dqg J1 Euxqhoor/ 4<<</ Idvw Wudfn= Lv lw lq wkh
JhqhvB Wkh Surprwlrq Srolf| ri d Odujh Mdsdqhvh Ilup/ Mrxuqdo ri Hfrqrplf
Ehkdylrxu dqg Rujdql}dwlrq 6;= 6;807351
^5` Ednhu/ J1/ P1 Jleev/ dqg E1 Kropvwurp/ 4<<7d/ Wkh Lqwhuqdo Hfrqrplfv ri
wkh Ilup= Hylghqfh iurp Shuvrqqho Gdwd/ Txduwhuo| Mrxuqdo ri Hfrqrplfv 43<=
;;40 <4<1
^6` bbbbbbbb/ 4<<7e/ Wkh Zdjh Srolf| ri d Ilup/ Txduwhuo| Mrxuqdo ri
Hfrqrplfv 43<= <540 881
^7` Ehfnhu/ J1/ 4<95/ Lqyhvwphqw lq Kxpdq Fdslwdo= D Wkhruhwlfdo Dqdo|vlv/
Mrxuqdo ri Srolwlfdo Hfrqrp| 85= <07<1
^8` Ehuqkdugw/ G1/ 4<<8/ Vwudwhjlf Surprwlrq dqg Frpshqvdwlrq/ Uhylhz ri
Hfrqrplf Vwxglhv 95= 64806<1
^9` Errwk/ D1 O1/ P1 Iudqfhvfrql/ dqg M1 Iudqn/ 5335 D Vwlfn| Iorruv Prgho ri
Surprwlrq/ Sd|/ dqg Jhqghu/ Hxurshdq Hfrqrplf Uhylhz 7:= 5<806551
^:` Eryhu/ R1/ P1 Duhoodqr/ dqg V1 Ehqwrolod/ 5335 Xqhpsor|phqw Gxudwlrq/
Ehqhw Gxudwlrq dqg wkh Exvlqhvv F|foh/ Hfrqrplf Mrxuqdo 445= 5560981
^;` Fdeudo/ O1 P1 E1 dqg M1 Pdwd/ 5336/ Rq wkh Hyroxwlrq ri wkh Ilup Vl}h
Glvwulexwlrq= Idfwv dqg Wkhru|/ Dphulfdq Hfrqrplf Uhylhz <6= 43:80<31
^<` Fkldssrul/ S10D1/ E1 Vdodqlì dqg M1 Ydohqwlq/ 4<<</ Hduo| Vwduwhuv yv Odwh
Ehjlqqhuv/ Mrxuqdo ri Srolwlfdo Hfrqrp| 43:= :640;81
^43` Grhulqj/ S1 dqg P1 Slruh/ 4<:4/ Lqwhuqdo Oderxu Pdunhwv dqg Pdqsrzhu
Dqdo|vlv/ Oh{lqjwrq/ PD= G/ F/ Khdwk dqg Frpsdq|1
56
^44` Hulnvvrq/ W1/ 4<<</ H{hfxwlyh Frpshqvdwlrq dqg Wrxuqdphqw Wkhru|=
Hpslulfdo Whvwv rq Gdqlvk Gdwd/ Mrxuqdo ri Oderu Hfrqrplfv/ 4: +5,= 5950
;31
^45` Jleerqv/ U1 dqg P1 Zdogpdq/ 4<<<d/ D Wkhru| ri Zdjh Surprwlrqv G|qdplfv
Lqvlgh Ilupv/ Txduwhuo| Mrxuqdo ri Hfrqrplfv 447= 465408;1
^46` bbbbbbbb/ 4<<<e/ Fduhhuv lq Rujdql}dwlrqv= Wkhru| dqg Hylghqfh/ Lq
Kdqgerrn ri Oderu Hfrqrplfv/ +hg,/ Ruoh| Dvkhqihowhu dqg Gdylg Fdug/
Dpvwhugdp= Hovhylhu1
^47` Khlvv/ I1/ 5335/ Vshflfdwlrq+v, ri Qhvwhg Orjlw Prghov/ Pdqkhlp Xqlyhuvlw|/
Zrunlqj Sdshu 49053351
^48` Nqdss/ W1 D1/ H1 Q1 Zklwh/ dqg G1H1 Fodun/ 5334/ D Qhvwhg Orjlw Dssurdfk
wr Krxvhkrog Prelolw|/ Mrxuqdo ri Uhjlrqdo Vflhqfh 74= 40551
^49` Mrydqrylf/ E1/ 4<:</ Mre Pdwfklqj dqg wkh Wkhru| ri Wxuqryhu/ Mrxuqdo ri
Srolwlfdo Hfrqrp| ;:= 45790931
^4:` Od}hdu/ H1/ 4<:</ Zk| Lv Wkhuh Pdqgdwru| Uhwluhphqw/ Mrxuqdo ri Srolwlfdo
Hfrqrp| ;:= 45940;71
^4;` Od}hdu/ H1/ 4<<</ Shuvrqqho Hfrqrplfv= Sdvw Ohvvrqv dqg Ixwxuh Gluhfwlrqv/
Mrxuqdo ri Oderu Hfrqrplfv 4: +5,=4<<05691
^4<` Od}hdu/ H1/ 5337/ Wkh Shwhu Sulqflsoh= D Wkhru| ri Ghfolqh/ Mrxuqdo ri
Srolwlfdo Hfrqrp| 445= V4740V961
^53` Od}hdu/ H1 dqg S1 R|hu/ 5336/ Lqwhuqdo dqg H{whuqdo Oderu Pdunhwv= D
Shuvrqqho Hfrqrplfv Dssurdfk/ QEHU Zrunlqj Sdshu 434<51
^54` Od}hdu/ H1/ dqg V1 Urvhq/ 4<;4/ Udqn0Rughu Wrxuqdphqwv dv Rswlpdo Oderxu
Frqwudfwv/ Mrxuqdo ri Srolwlfdo Hfrqrp| ;<= ;740971
57
^55` Olpd/ I1 dqg S1 W1 Shuhlud/ 5336/ Fduhhuv dqg Zdjh zlwklq Odujh Ilupv=
hylghqfh iurp d pdwfkhg hpsor|hu0hpsor|hh gdwd vhw/ Lqwhuqdwlrqdo Mrxuqdo
ri Pdqsrzhu 5:= ;450681
^56` PfFxh/ N1/ 4<<9/ Surprwlrqv dqg Zdjh Jurzwk/ Mrxuqdo ri Oderxu
Hfrqrplfv 47= 4:8053<1
^57` PfIdgghq/ G1/ 4<:6/ Frqglwlrqdo Orjlw Dqdo|vlv ri Txdolwdwlyh Fkrlfh
Ehkdylru/ lq S1 ]duhpnd +hg1, Iurqwlhuv lq Hfrqrphwulfv1 Qhz \run/ Dfdghplf
Suhvv1
^58` PfIdgghq/ G1 4<:;/ Txdqwlwdwlyh Phwkrgv iru Dqdo|}lqj Wudyho Ehkdylrxu ri
Lqglylgxdov= Vrph uhfhqw ghyhorsphqwv/ lq G1 Khqvkhu dqg S1 Vwrskhu +hgv1,
Ehkdylrudo Wudyho Prghoolqj1 Furrp Khop/ Orqgrq
^59` PfIdgghq/ G1/ 4<;5/ Hfrqrphwulf Prghov ri Suredelolvwlf Fkrlfh/ lq F1
Pdqvnl dqg G1 PfIdgghq +hg1, Vwuxfwxudo Dqdo|vlv ri Glvfuhwh Gdwd zlwk
Hfrqrphwulf Dssolfdwlrqv1 Wkh PLW Suhvv/ Fdpeulgjh/ PD1
^5:` Plojurp/ S1 dqg V1 Rvwhu/ 4<;:/ Mre Glvfulplqdwlrq/ Pdunhw Irufhv dqg wkh
Lqylvlelolw| K|srwkhvlv/ Txduwhuo| Mrxuqdo ri Hfrqrplfv 435= 78607:91
^5;` Prqwjrphu|/ P1/ 5335/ D Qhvwhg Orjlw Prgho ri wkh Fkrlfh ri d Judgxdwh
Exvlqhvv Vfkrro/ Hfrqrplfv ri Hgxfdwlrq Uhylhz 54= 7:40;31
^5<` Shujdplw/ P1 U1 dqg M1 U1 Yhxp/ 4<<</ Zkdw lv d SurprwlrqB/ Lqgxvwuldo
dqg Oderu Uhodwlrqv Uhylhz 85= 8;409341
^63` Srlulhu/ G1 M1/ 4<<9/ D Ed|hvldq Dqdo|vlv ri Qhvwhg Orjlw Prghov/ Mrxuqdo ri
Hfrqrphwulfv :8= 4960;41
^64` Vhow}hu/ D1 dqg G1 Phuuhww/ 5333/ Shuvrqqho Srolflhv dw wkh Xqlrq Edqn ri
Dxvwudold= Hylghqfh iurp wkh 4;;;04<33 Hqwu| Frkruwv/ Mrxuqdo ri Oderu
Hfrqrplfv 4;= 8:609461
58
^65` Wuheoh/ M1/ Ydq Jdphuhq/ H1/ V1 Eulgjhv dqg W1 Edupe|/ +5334,/ Wkh Lqwhuqdo
Hfrqrplfv ri wkh Ilup= Ixuwkhu Hylghqfh iurp Shuvrqqho Gdwd/ Oderxu
Hfrqrplfv ; +8,= 8640851
^66` Ylhlud/ M1 F1/ 5333/ Uhwxuqv wr Hgxfdwlrq lq Sruwxjdo/ Oderxu Hfrqrplfv 9=
8680741
^67` Zlqwhu0Hephu/ U1 dqg M1 ]zhlp oohu/ 4<<:/ Xqhtxdo Dvvljqphqw dqg Xqhtxdo
Surprwlrq lq Mre Odgghuv/ Mrxuqdo ri Oderxu Hfrqrplfv 48= 760:41
59
7DEOH6XPPDU\6WDWLVWLFV
:RUNHUVSUHVHQWLQDOOSHULRGV
$OOZRUNHUV
0HDQ
6WG'HY
0HDQ
6WG'HY
3URPRWLRQUDWH
3RUWVRIHQWU\LQGLFDWRU
5HWXUQVWRWHQXUHLQGLFDWRU
3ULPDU\HGXFDWLRQ
6HFRQGDU\HGXFDWLRQ
7HUWLDU\HGXFDWLRQ
$JH
7HQXUH
7LPHVLQFHODVWSURPRWLRQ
5DQN
5DQN
/RJQXPEHURIWRSPDQDJHUV
/RJQXPEHURIZRUNHUV
2EVHUYDWLRQV
1RWHV
'DWDIURP4XDGURVGH3HVVRDO0667
7KHILUVWWZRFROXPQVSUHVHQWWKHVXPPDU\VWDWLVWLFVIRUDOOZRUNHUVUHJDUGOHVVRIWKHQXPEHURI\HDUV
LQ WKH VDPSOH FROXPQV WKUHH DQG IRXU LQFOXGH RQO\ WKRVH ZRUNHUV WKDW DUH LQ WKH VDPSOH GXULQJ WKH
ZKROH\HDUSHULRG
3URPRWLRQUDWHLVWKHIUDFWLRQRISURPRWHGZRUNHUVLQDOOZRUNHU\HDUREVHUYDWLRQVLQWKHVDPSOH
3RUWV RI HQWU\ LQGLFDWRU LV HTXDO WR RQH LI WKH HQWU\ UDWH WR D KLHUDUFKLFDO OHYHO LV KLJKHU WKDQ GHILQHGIRUWKHVHYHQERWWRPKLHUDUFKLFDOOHYHOV
5HWXUQVWRWHQXUHLQGLFDWRULVWKHFRHIILFLHQWRQORJWHQXUHLQDORJZDJHUHJUHVVLRQVSHFLILFWRHDFK
ILUPLQWKHVDPSOH
7HQXUH7LPHVLQFHODVWSURPRWLRQDQG$JHDUHPHDVXUHGLQ\HDUV
7KHGXPP\5DQNLVIRUWKRVHFODVVLILHGDVWRSPDQDJHUVE\ERWKUDQNLQJV\VWHPVDQG5DQNLVIRU
WKRVHLQ5DQNZKRDUHFODVVLILHGDWWKHKLJKHVWOHYHO
7DEOH7KHGHWHUPLQDQWVRIWRSPDQDJHUVnSURPRWLRQPDUJLQDOHIIHFWVRIWKH3URELW
PRGHOGHILQHGE\HTXDWLRQVDQGIXOOVDPSOH
0RGHO
0RGHO
3RUWVRIHQWU\LQGLFDWRU
5HWXUQVWRWHQXUHLQGLFDWRU
6HFRQGDU\
7HUWLDU\
$JH
$JH [ 7HQXUH
7HQXUH[
7HQXUH[
7LPHVLQFHODVWSURPRWLRQ
7LPHVLQFHODVWSURPRWLRQ[
7LPHVLQFHODVWSURPRW[
7HQXUH7LPHSURP[ 5DQN
5DQN
/RJQXPEHURIWRSPDQDJHUV
/RJQXPEHURIZRUNHUV
2EVHUYDWLRQV
:DOGFKL
/RJ/LNHOLKRRG
3VHXGR5VTXDUHG
1RWHV
5REXVWVWDQGDUGHUURUVLQSDUHQWKHVHV
VLJQLILFDQWDWVLJQLILFDQWDWVLJQLILFDQWDW
<HDUDQGLQGXVWU\GXPPLHVLQFOXGHG
0DUJLQDOHIIHFWVFRPSXWHGDWPHDQVDPSOHYDOXHV
3RUWVRIHQWU\LQGLFDWRULVHTXDOWRRQHLIWKHHQWU\UDWHWRDKLHUDUFKLFDOOHYHOLVKLJKHUWKDQ
GHILQHGIRUWKHVHYHQERWWRPKLHUDUFKLFDOOHYHOV
5HWXUQVWRWHQXUHLQGLFDWRULVWKHFRHIILFLHQWRQORJWHQXUHLQDORJZDJHUHJUHVVLRQVSHFLILFWR
HDFKILUPLQWKHVDPSOH
7DEOH7KHGHWHUPLQDQWVRIWRSPDQDJHUVnSURPRWLRQPDUJLQDOHIIHFWVRIWKH3URELW
PRGHOGHILQHGE\HTXDWLRQVDQGZRUNHUVSUHVHQWLQDOOSHULRG
0RGHO
0RGHO
3RUWVRIHQWU\LQGLFDWRU
5HWXUQVWRWHQXUHLQGLFDWRU
6HFRQGDU\
7HUWLDU\
$JH
$JH [ 7HQXUH
7HQXUH[
7HQXUH[
7LPHVLQFHODVWSURPRWLRQ
7LPHVLQFHODVWSURPRWLRQ[
7LPHVLQFHODVWSURPRW[
7HQXUH[7LPHSURP[ 5DQN
5DQN
/RJQXPEHURIWRSPDQDJHUV
/RJQXPEHURIZRUNHUV
2EVHUYDWLRQV
:DOGFKL
/RJ/LNHOLKRRG
3VHXGR5VTXDUHG
1RWHV
5REXVWVWDQGDUGHUURUVLQSDUHQWKHVHV
VLJQLILFDQWDWVLJQLILFDQWDWVLJQLILFDQWDW
<HDUDQGLQGXVWU\GXPPLHVLQFOXGHG
0DUJLQDOHIIHFWVFRPSXWHGDWPHDQVDPSOHYDOXHV
3RUWVRIHQWU\LQGLFDWRULVHTXDOWRRQHLIWKHHQWU\UDWHWRDKLHUDUFKLFDOOHYHOLVKLJKHUWKDQ
GHILQHGIRUWKHVHYHQERWWRPKLHUDUFKLFDOOHYHOV
5HWXUQVWRWHQXUHLQGLFDWRULVWKHFRHIILFLHQWRQORJWHQXUHLQDORJZDJHUHJUHVVLRQVSHFLILFWR
HDFKILUPLQWKHVDPSOH
7DEOH&DUHHUVr5DQGRP8WLOLW\0RGHOVRI3URPRWLRQ'HFLVLRQ
6WUXFWXUDO(VWLPDWHVRIWKH1HVWHG/RJLW0RGHO
UGOHYHOSURPRWLRQ\HDUV
7HUWLDU\HGXFDWLRQ
/RVHU /DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
3RUWVRIHQWU\LQGLFDWRU
/RVHU /DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
/RJQXPEHURIWRSPDQDJHUV
/RVHU /DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
QGOHYHOSURPRWLRQ\HDUV
7HUWLDU\HGXFDWLRQ
/DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
3RUWVRIHQWU\LQGLFDWRU
/DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
/RJQXPEHURIWRSPDQDJHUV
/DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
VWOHYHOSURPRWLRQ\HDUV
7HUWLDU\HGXFDWLRQ
3RUWVRIHQWU\LQGLFDWRU
7LPHVLQFHODVWSURPRWLRQ
$JH
/RJQXPEHURIZRUNHUV
/RJQXPEHURIWRSPDQDJHUV
,QFOXVLYHYDOXHV
QGOHYHO
/RVHU
/DWHEHJLQQHU
(DUO\VWDUWHU
&KDPSLRQ
VWOHYHO
3URPRWLRQ
1RSURPRWLRQ
2EVHUYDWLRQV
/5FKLVTXDUHGGI
/5WHVWRIKRPRVNHGDVWLFLW\FKLVTXDUHGGI
rQRWSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
rQRWSURPRWHG
rSURPRWHG
&RHIILFLHQW 6WG(UURU
1RWHV
7KH/5WHVWDJDLQVWWKHFRQVWDQWRQO\PRGHO
7KH/5WHVWRIKRPRVNHGDVWLFLW\LVDWHVWIRUWKHQHVWLQJDJDLQVWWKHQXOOK\SRWKHVLV
RIKRPRVNHGDVFWLFLW\
7DEOH$+LHUDUFKLFDOOHYHOV*UDGH/HYHOVDVGHILQHGE\ODZ
/HYHO
7DVNV
−7RSPDQDJHUV
'HILQLWLRQRIWKHILUPnV
JHQHUDOSROLF\RUFRQVXOWLQJ
RQWKHRUJDQL]DWLRQRIWKH
ILUP6WUDWHJLFSODQQLQJ
&UHDWLRQRUDGDSWDWLRQRI
WHFKQLFDOVFLHQWLILFDQG
DGPLQLVWUDWLYHPHWKRGVRU
SURFHVVHV
−,QWHUPHGLDU\PDQDJHUV
−6XSHUYLVRUVWHDPOHDGHUV
−+LJKHUVNLOOHG
SURIHVVLRQDOV
−6NLOOHGSURIHVVLRQDOV
−6HPLVNLOOHGSURIHVVLRQDOV
−1RQVNLOOHGSURIHVVLRQDOV
−$SSUHQWLFHVLQWHUQV
WUDLQHHV
6NLOOV
.QRZOHGJHRIPDQDJHPHQW
DQGFRRUGLQDWLRQRIILUPnV
IXQGDPHQWDODFWLYLWLHV
.QRZOHGJHRIPDQDJHPHQW
DQGFRRUGLQDWLRQRIWKH
IXQGDPHQWDODFWLYLWLHVLQWKH
ILHOGWRZKLFKWKHLQGLYLGXDO
LVDVVLJQHGDQGWKDWUHTXLUHV
WKHVWXG\DQGUHVHDUFKRI
KLJKUHVSRQVLELOLW\DQG
WHFKQLFDOOHYHOSUREOHPV
2UJDQL]DWLRQDQGDGDSWDWLRQ 7HFKQLFDODQGSURIHVVLRQDO
RIWKHJXLGHOLQHVHVWDEOLVKHG
TXDOLILFDWLRQVGLUHFWHGWR
E\WKHVXSHULRUVDQGGLUHFWO\ H[HFXWLYHUHVHDUFKDQG
OLQNHGZLWKWKHH[HFXWLYH
PDQDJHPHQWZRUN
ZRUN
2ULHQWDWLRQRIWHDPVDV
&RPSOHWHSURIHVVLRQDO
GLUHFWHGE\WKHVXSHULRUVEXW TXDOLILFDWLRQZLWKD
UHTXLULQJWKHNQRZOHGJHRI
VSHFLDOL]DWLRQ
DFWLRQSURFHVVHV
&RPSOHWHSURIHVVLRQDO
7DVNVUHTXLULQJDKLJK
WHFKQLFDOYDOXHDQGGHILQHGLQ TXDOLILFDWLRQZLWKD
JHQHUDOWHUPVE\WKH
VSHFLDOLVDWLRQDGGLQJWR
VXSHULRUV
WKHRUHWLFDODQGDSSOLHG
NQRZOHGJH
&RPSOHWHSURIHVVLRQDO
&RPSOH[RUGHOLFDWHWDVNV
XVXDOO\QRWUHSHWLWLYHDQG
TXDOLILFDWLRQLPSO\LQJ
GHILQHGE\WKHVXSHULRUV
WKHRUHWLFDODQGDSSOLHG
NQRZOHGJH
:HOOGHILQHGWDVNVPDLQO\
3URIHVVLRQDOTXDOLILFDWLRQLQD
PDQXDORUPHFKDQLFDOQR
OLPLWHGILHOGRUSUDFWLFDODQG
LQWHOOHFWXDOZRUNZLWKORZ
HOHPHQWDU\SURIHVVLRQDO
FRPSOH[LW\XVXDOO\URXWLQH
NQRZOHGJH
DQGVRPHWLPHVUHSHWLWLYH
6LPSOHWDVNVDQGWRWDOO\
3UDFWLFDONQRZOHGJHDQG
GHWHUPLQHG
HDVLO\DFTXLUHGLQDVKRUW
WLPH
$SSUHQWLFHVKLS
),*85(
3URPRWLRQSUREDELOLW\DVDIXQFWLRQRIWKHILUPRSHQQHVV
3URPRWLRQSUREDELOLW\
)LUPZLWKSRUWVRIHQWU\
)LUPZLWKRXWSRUWVRIHQWU\
7LPHVLQFHODVWSURPRWLRQLQ\HDUV
1RWH3UREDELOLWLHVFDOFXODWHGIRULQGLYLGXDOVZLWKWHUWLDU\HGXFDWLRQZLWKDVWDUWLQJDJHRIDVVLJQHGWRUDQNLQZRUNLQJLQWKHPRVWSUHGRPLQDQW
VHFWRU7KHUHPDLQLQJYDULDEOHVDUHDWWKHLUVDPSOHPHDQV$ILUPLVFRQVLGHUHGWRKDYHSRUWVRIHQWU\LIWKHHQWU\UDWHWRDKLHUDUFKLFDOOHYHOLVKLJKHUWKDQ
GHILQHGIRUWKHVHYHQERWWRPKLHUDUFKLFDOOHYHOV
),*85(
3URPRWLRQSUREDELOLW\DVDIXQFWLRQRIUHFHQWSURPRWLRQHYHQWV
3URPRWLRQSUREDELOLW\
3URPRWHGHYHU\\HDU
8QSURPRWHGLQWKHSUHYLRXV\HDU
7HQXUHLQ\HDUV
1RWH3UREDELOLWLHVFDOFXODWHGIRULQGLYLGXDOVZLWKWHUWLDU\HGXFDWLRQZLWKDVWDUWLQJDJHRIDVVLJQHGWRUDQNLQZRUNLQJLQWKHPRVWSUHGRPLQDQW
VHFWRUDQGZLWKLQDILUPZLWKSRUWVRIHQWU\7KHUHPDLQLQJYDULDEOHVDUHDWWKHLUVDPSOHPHDQV7KHLQGLYLGXDOSURPRWHGHYHU\\HDUKDVWLPHVLQFHODVW
SURPRWLRQHTXDOWR]HURDQGWKHLQGLYLGXDOXQSURPRWHGLQWKHSUHYLRXV\HDUKDVWLPHVLQFHODVWSURPRWLRQHTXDOWRRQH
),*85(
6WDUVYHUVXVORVHUVFRPSDULVRQRISURPRWLRQSUREDELOLWLHV
'LIIHUHQFHLQSURPRWLRQSUREDELOLW\
7HQXUHLQ\HDUV
1RWH3UREDELOLWLHVFDOFXODWHGIRULQGLYLGXDOVZLWKWHUWLDU\HGXFDWLRQZLWKDVWDUWLQJDJHRIDVVLJQHGWRUDQNLQZRUNLQJLQWKHPRVWSUHGRPLQDQW
VHFWRUDQGZLWKLQDILUPZLWKSRUWVRIHQWU\7KHUHPDLQLQJYDULDEOHVDUHDWWKHLUVDPSOHPHDQV7KH/RVHULVWKHLQGLYLGXDOQHYHUSURPRWHGUHSUHVHQWHGE\
WKHVROLGOLQHLQ)LJXUH7KH6WDULVWKHLQGLYLGXDOSURPRWHGHYHU\\HDUUHSUHVHQWHGE\WKHVROLGOLQHLQ)LJXUH
),*85(
7KHGHFLVLRQWUHHWRSURPRWHRUQRWWRSURPRWH
7RSPDQDJHU
VWSHULRG
1RWSURPRWHG
/RVHU
3URPRWHG
QGSHULRG
/DWH
EHJLQQHU
(DUO\
VWDUWHU
&KDPSLRQ
UGSHULRG
1RW
SURPRWHG
3URPRWHG
1RW
SURPRWHG
3URPRWHG
1RW
SURPRWHG
3URPRWHG
1RW
SURPRWHG
3URPRWHG
1RWH7KHILUVWSHULRGRIWKHSURPRWLRQQRSURPRWLRQGHFLVLRQFRUUHVSRQGVWRWKHILUVWWKUHH\HDUVLQWKHGDWDVHWWKHVHFRQGWRWKHWKWK\HDUVDQGWKHWKLUG
SHULRG WR WKH WKWK \HDUV 7KH /RVHU r D WRS PDQDJHU QRW SURPRWHG LQ WKH ILUVW WZR SHULRGV WKH /DWH EHJLQQHU r QRW SURPRWHG LQ WKH ILUVW SHULRG EXW
SURPRWHGLQWKHVHFRQGSHULRGWKH(DUO\VWDUWHUrSURPRWHGLQWKHILUVWSHULRGEXWQRWSURPRWHGLQWKHVHFRQGSHULRGWKH&KDPSLRQrSURPRWHGLQWKHILUVW
WZRSHULRGV
WORKING PAPERS
2000
1/00
UNEMPLOYMENT DURATION: COMPETING AND DEFECTIVE RISKS
— John T. Addison, Pedro Portugal
2/00
THE ESTIMATION OF RISK PREMIUM IMPLICIT IN OIL PRICES
— Jorge Barros Luís
3/00
EVALUATING CORE INFLATION INDICATORS
— Carlos Robalo Marques, Pedro Duarte Neves, Luís Morais Sarmento
4/00
LABOR MARKETS AND KALEIDOSCOPIC COMPARATIVE ADVANTAGE
— Daniel A. Traça
5/00
WHY SHOULD CENTRAL BANKS AVOID THE USE OF THE UNDERLYING INFLATION INDICATOR?
— Carlos Robalo Marques, Pedro Duarte Neves, Afonso Gonçalves da Silva
6/00
USING THE ASYMMETRIC TRIMMED MEAN AS A CORE INFLATION INDICATOR
— Carlos Robalo Marques, João Machado Mota
2001
1/01
THE SURVIVAL OF NEW DOMESTIC AND FOREIGN OWNED FIRMS
— José Mata, Pedro Portugal
2/01
GAPS AND TRIANGLES
— Bernardino Adão, Isabel Correia, Pedro Teles
3/01
A NEW REPRESENTATION FOR THE FOREIGN CURRENCY RISK PREMIUM
— Bernardino Adão, Fátima Silva
4/01
ENTRY MISTAKES WITH STRATEGIC PRICING
— Bernardino Adão
5/01
FINANCING IN THE EUROSYSTEM: FIXED VERSUS VARIABLE RATE TENDERS
— Margarida Catalão-Lopes
6/01
AGGREGATION, PERSISTENCE AND VOLATILITY IN A MACROMODEL
— Karim Abadir, Gabriel Talmain
7/01
SOME FACTS ABOUT THE CYCLICAL CONVERGENCE IN THE EURO ZONE
— Frederico Belo
8/01
TENURE, BUSINESS CYCLE AND THE WAGE-SETTING PROCESS
— Leandro Arozamena, Mário Centeno
9/01
USING THE FIRST PRINCIPAL COMPONENT AS A CORE INFLATION INDICATOR
José Ferreira Machado, Carlos Robalo Marques, Pedro Duarte Neves, Afonso Gonçalves da Silva
10/01
IDENTIFICATION WITH AVERAGED DATA AND IMPLICATIONS FOR HEDONIC REGRESSION STUDIES
— José A.F. Machado, João M.C. Santos Silva
2002
1/02
QUANTILE REGRESSION ANALYSIS OF TRANSITION DATA
— José A.F. Machado, Pedro Portugal
2/02
SHOULD WE DISTINGUISH BETWEEN STATIC AND DYNAMIC LONG RUN EQUILIBRIUM IN ERROR
CORRECTION MODELS?
— Susana Botas, Carlos Robalo Marques
Banco de Portugal / Working Papers
i
3/02
MODELLING TAYLOR RULE UNCERTAINTY
— Fernando Martins, José A. F. Machado, Paulo Soares Esteves
4/02
PATTERNS OF ENTRY, POST-ENTRY GROWTH AND SURVIVAL: A COMPARISON BETWEEN DOMESTIC
AND FOREIGN OWNED FIRMS
— José Mata, Pedro Portugal
5/02
BUSINESS CYCLES: CYCLICAL COMOVEMENT WITHIN THE EUROPEAN UNION IN THE PERIOD
1960-1999. A FREQUENCY DOMAIN APPROACH
— João Valle e Azevedo
6/02
AN “ART”, NOT A “SCIENCE”? CENTRAL BANK MANAGEMENT IN PORTUGAL UNDER THE GOLD
STANDARD, 1854-1891
— Jaime Reis
7/02
MERGE OR CONCENTRATE? SOME INSIGHTS FOR ANTITRUST POLICY
— Margarida Catalão-Lopes
8/02
DISENTANGLING THE MINIMUM WAGE PUZZLE: ANALYSIS OF WORKER ACCESSIONS AND
SEPARATIONS FROM A LONGITUDINAL MATCHED EMPLOYER-EMPLOYEE DATA SET
— Pedro Portugal, Ana Rute Cardoso
9/02
THE MATCH QUALITY GAINS FROM UNEMPLOYMENT INSURANCE
— Mário Centeno
10/02
HEDONIC PRICES INDEXES FOR NEW PASSENGER CARS IN PORTUGAL (1997-2001)
— Hugo J. Reis, J.M.C. Santos Silva
11/02
THE ANALYSIS OF SEASONAL RETURN ANOMALIES IN THE PORTUGUESE STOCK MARKET
— Miguel Balbina, Nuno C. Martins
12/02
DOES MONEY GRANGER CAUSE INFLATION IN THE EURO AREA?
— Carlos Robalo Marques, Joaquim Pina
13/02
INSTITUTIONS AND ECONOMIC DEVELOPMENT: HOW STRONG IS THE RELATION?
— Tiago V.de V. Cavalcanti, Álvaro A. Novo
2003
1/03
FOUNDING CONDITIONS AND THE SURVIVAL OF NEW FIRMS
— P.A. Geroski, José Mata, Pedro Portugal
2/03
THE TIMING AND PROBABILITY OF FDI:
An Application to the United States Multinational Enterprises
— José Brandão de Brito, Felipa de Mello Sampayo
3/03
OPTIMAL FISCAL AND MONETARY POLICY: EQUIVALENCE RESULTS
— Isabel Correia, Juan Pablo Nicolini, Pedro Teles
4/03
FORECASTING EURO AREA AGGREGATES WITH BAYESIAN VAR AND VECM MODELS
— Ricardo Mourinho Félix, Luís C. Nunes
5/03
CONTAGIOUS CURRENCY CRISES: A SPATIAL PROBIT APPROACH
— Álvaro Novo
6/03
THE DISTRIBUTION OF LIQUIDITY IN A MONETARY UNION WITH DIFFERENT PORTFOLIO RIGIDITIES
— Nuno Alves
7/03
COINCIDENT AND LEADING INDICATORS FOR THE EURO AREA: A FREQUENCY BAND APPROACH
— António Rua, Luís C. Nunes
8/03
WHY DO FIRMS USE FIXED-TERM CONTRACTS?
— José Varejão, Pedro Portugal
9/03
NONLINEARITIES OVER THE BUSINESS CYCLE: AN APPLICATION OF THE SMOOTH TRANSITION
AUTOREGRESSIVE MODEL TO CHARACTERIZE GDP DYNAMICS FOR THE EURO-AREA AND PORTUGAL
— Francisco Craveiro Dias
Banco de Portugal / Working Papers
ii
10/03
WAGES AND THE RISK OF DISPLACEMENT
— Anabela Carneiro, Pedro Portugal
11/03
SIX WAYS TO LEAVE UNEMPLOYMENT
— Pedro Portugal, John T. Addison
12/03
EMPLOYMENT DYNAMICS AND THE STRUCTURE OF LABOR ADJUSTMENT COSTS
— José Varejão, Pedro Portugal
13/03
THE MONETARY TRANSMISSION MECHANISM: IS IT RELEVANT FOR POLICY?
— Bernardino Adão, Isabel Correia, Pedro Teles
14/03
THE IMPACT OF INTEREST-RATE SUBSIDIES ON LONG-TERM HOUSEHOLD DEBT:
EVIDENCE FROM A LARGE PROGRAM
— Nuno C. Martins, Ernesto Villanueva
15/03
THE CAREERS OF TOP MANAGERS AND FIRM OPENNESS: INTERNAL VERSUS EXTERNAL LABOUR
MARKETS
— Francisco Lima, Mário Centeno
Banco de Portugal / Working Papers
iii