title: Development of a brief form of the Life Skills Profile: the LSP-20.
abstract: OBJECTIVE
  To develop a brief form of the Life Skills Profile (LSP) that incorporates all five subscales of the full form.
  
  
  METHODS
  A new short form of the LSP (LSP-20) was developed to incorporate all five subscales of the full form. The LSP-20 development was based on a reanalysis of data from previously published studies. These data sets were also reanalysed to determine any differential effects of numbers and percentages of items in the LSP-39, LSP-16 and LSP-20, comparability of scores of the different forms, of test-retest and interrater reliability, and validity of the LSP-20 by comparison with the Positive and Negative Syndrome Scale (PANSS).
  
  
  RESULTS
  A twenty-item short form of the LSP-39 (LSP-20) is described which retains 16 items of an earlier short form but which also reproduces the subscale concerned with disability associated with positive psychotic phenomena. The subscales correlated highly with their counterparts in the full form, interrater and test-retest reliabilities were comparable, and concurrent validity was good.
  
  
  CONCLUSIONS
  The LSP-20 is a brief form of a widely used instrument that offers equivalent coverage to the full form with sound empirical properties, though unlike the LSP-39, it can be scored in the direction of impairments or strengths. Therefore the LSP-20 may be more suited to routine service disability and aggregated outcome assessments, but less suited than the LSP-39 to detailed research, or to interactive use as part of service user's individual care planning and review.
authors.affiliation: Community Mental Health Services, Royal North Shore Hospital, 55 Hercules Street, Chatswood, New South Wales 2067, Australia. arosen@doh.health.nsw.gov.au
authors.forename: A
authors.initials: A
authors.lastname: Rosen
authors.forename: T
authors.initials: T
authors.lastname: Trauer
authors.forename: D
authors.initials: D
authors.lastname: Hadzi-Pavlovic
authors.forename: G
authors.initials: G
authors.lastname: Parker
mesh_terms: D000328:Adult; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis*; D009517:New South Wales; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics; D015203:Reproducibility of Results; D012720:Severity of Illness Index