title: A bifactorial solution to the Psychopathy Checklist: Screening Version in a sample of civil psychiatric patients.
abstract: BACKGROUND
  There is considerable debate about the underlying factor structure of the Psychopathy Checklist: Screening Version (PCL: SV). An established view is that it reflects a unitary construct underpinned by two correlated factors. More recent research has, however, undermined this conceptualisation.
  
  
  OBJECTIVE
  Our aim was to compare 10 competing models of the PCL: SV in a sample of civil psychiatric patients.
  
  
  METHODS
  Ten distinct factor models were specified and tested using conventional confirmatory factor analytic techniques, along with confirmatory bifactor modelling.
  
  
  RESULTS
  A bifactor model, including two general factors (interpersonal-affective and antisocial-lifestyle), and four subordinate factors (interpersonal, affective, antisocial and lifestyle) provided the best fit to the data. The reliability of the conceptualisation was supported through the use of composite reliability, and the differential relationships exhibited between the general factors and measures of personality, impulsivity and mental health.
  
  
  CONCLUSIONS
  Our findings provide further weight to taking the two general psychopathy factors into account when interpreting the PCL: SV for clinical purposes. Copyright © 2015 John Wiley & Sons, Ltd.
authors.affiliation: University of Huddersfield, Huddersfield, UK.
authors.forename: Daniel
authors.identifier: http://orcid.org/0000-0001-5863-2906
authors.initials: D
authors.lastname: Boduszek
authors.affiliation: Manchester Metropolitan University, Manchester, UK.
authors.forename: Katie
authors.identifier: http://orcid.org/0000-0002-2495-3952
authors.initials: K
authors.lastname: Dhingra
authors.affiliation: National College of Ireland, Dublin, Ireland.
authors.forename: Philip
authors.initials: P
authors.lastname: Hyland
authors.affiliation: University of Chester, Chester, UK.
authors.forename: Agata
authors.initials: A
authors.lastname: Debowska
mesh_terms: D000328:Adult; D000368:Aged; D000987:Antisocial Personality Disorder / Q000175:diagnosis* / Q000523:psychology; D057189:Checklist; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results