Th e purpos e o f thi s articl e i s t o demon - strat e tha t th e change s introduce d int o th e PCL- R hav e no t altere d it s psychometri c propertie s an d tha t th e bod y o f re - searc h accumulate d usin g th e PC L ca n b e generalize d t o th e revise d measure.Harpur Ralph Hakstian University of British Columbia - Vancouver Adelle E.Forth Show all 6 authors Hide Download full-text PDF Read full-text Download full-text PDF Read full-text Download citation Copy link Link copied Read full-text Download citation Copy link Link copied Citations (643) References (14) Abstract The revised Psychopathy Checklist (PCL) is a 20-item scale scored from interview and file information.N 356) indicate that the revised PCL resembles its 22-item predecessor in all important respects.
It has excellent psychometric properties, and it measures 2 correlated factors that were cross-validated both within and between samples. Correlations between the original PCL and the revised version approached unity for both the factors and the full scale. We conclude that the revised PCL measures the same construct as the original and that the PCL is a reliable and valid instrument for the assessment of psychopathy in male forensic populations. The Hare Psychopathy Checklist Revised Writer Free Public FullPsycINFO Database Record (c) 2012 APA, all rights reserved) Discover the worlds research 20 million members 135 million publications 700k research projects Join for free Public Full-text 1 Content uploaded by Joseph P Newman Author content All content in this area was uploaded by Joseph P Newman Content may be subject to copyright. Har t Universit y o f Britis h Columbi a Vancouver, Britis h Columbia, Canad a Josep h P. Newma n Universit y o f Wisconsi n Th e revise d Psychopath y Checklis t (PCL ) i s a 20-ite m scal e score d fro m intervie w an d fil e informa - tion. The Hare Psychopathy Checklist Revised Writer Iso N SampleAnalyse s o f dat a fro m 5 priso n sample s (N 9 2 5 ) an d 3 forensi c psychiatri c sample s (N 356 ) indicat e tha t th e revise d PC L resemble s it s 22-ite m predecesso r i n al l importan t respects. Correlation s betwee n th e origina l PC L an d th e revise d versio n approache d unit y fo r bot h th e factor s an d th e ful l scale. W e conclud e tha t th e revise d PC L mea - sure s th e sam e construc t a s th e origina l an d tha t th e PC L i s a reliabl e an d vali d instrumen t fo r th e assessmen t o f psychopath y i n mal e forensi c populations. Durin g th e las t decade, w e hav e devote d considerabl e effor t t o th e developmen t o f a n assessmen t procedur e fo r crimina l psychopath y tha t ha s acceptabl e psychometri c propertie s an d tha t i s closel y tie d t o traditiona l clinica l conception s o f psy - chopathy. Th e origina l PC L consist s o f 2 2 personalit y an d behaviora l items, whic h ar e complete d o n th e basi s o f intervie w an d fil e informatio n (Hare, 1980). Ther e i s a considerabl e amoun t o f publishe d an d unpublishe d evidenc e attestin g t o th e reliabilit y an d validit y o f th e PCL. Ther e ar e difference s i n externa l correlate s o f th e factors, an d w e hav e argue d tha t measuremen t o f bot h factor s i s importan t fo r a comprehensiv e assessmen t o f psychopath y (Harpu r Hare, 1989; Harpur, Hare, Hakstian, 1989). Th e revise d Psychopath y Checklis t (PCL-R; Hare, 1985 ) differ s fro m th e PC L i n severa l ways. Tw o PC L items, previous diagnosis a s a psychopath o r similar an d drug o r alcohol no t direct cause o f antisocial behavior, hav e bee n omitte d becaus e the y ha d relativel y lo w correlation s wit h th e tota l scor e an d wer e difficul t t o score. Th e scorin g o f som e item s wa s mad e mor e stringen t b y requirin g mor e extrem e instance s o f devian t behavio r fo r a scor e o f 2. Fo r a fe w items, th e scorin g criteri a wer e modifie d somewhat. I t i s importan t fo r th e continuit y o f researc h carrie d ou t usin g th e PC L t o demonstrat e empiricall y tha t th e revise d versio n Preparatio n o f thi s repor t wa s supporte d b y Gran t MT-451 1 fro m th e Medica l Researc h Counci l o f Canad a t o Rober t D. Har e an d b y Gran t MH3771 1 fro m th e Nationa l Institut e o f Menta l Healt h t o Jo - sep h P. Newman. Correspondenc e concernin g thi s articl e an d request s fo r a n ex - tende d repor t shoul d b e addresse d t o Rober t D. Hare, Departmen t o f Psychology, Universit y o f Britis h Columbia, Vancouver, Britis h Colum - bia, Canad a V6 T 1Y7. Eve n mino r change s i n scorin g criteri a ca n resul t i n substantiv e change s i n th e meanin g o f a n item.
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