title: Determining the Accuracy of Self-Report Versus Informant-Report Using the Conners' Adult ADHD Rating Scale.
abstract: OBJECTIVE
  The present research examined the validity of self-report versus informant-report in relation to a performance-based indicator of adult ADHD.
  
  
  METHODS
  Archival data from 118 participants (52 males, 66 females) were used to compare Conners' Adult ADHD Rating Scale-Self-Report: Long Format (CAARS-S:L) and Conners' Adult ADHD Rating Scale-Observer Report: Long Format (CAARS-O:L) with discrepancy scores calculated between the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) Verbal Comprehension Index - Working Memory Index (VCI - WMI) and Perceptual-Organizational Index - Processing Speed Index (POI - PSI) scaled scores.
  
  
  RESULTS
  Neither the self- nor informant-report formats of the CAARS were better predictors of discrepancies between WAIS-III Index scores. Intercorrelations between the CAARS-S:L and CAARS-O:L revealed generally higher correlations between the same scales of different formats and among scales measuring externally visible symptoms. Furthermore, regression analysis indicated that both the CAARS-S:L and CAARS-O:L clinical scales contributed a significant proportion of variance in WAIS-III VCI - WMI discrepancy scores (14.7% and 16.4%, respectively).
  
  
  CONCLUSIONS
  Results did not establish greater accuracy of self-report versus informant-report of ADHD symptomatology, rather demonstrate the need for multimodal assessment of ADHD in adults.
authors.affiliation: George Washington University, DC, USA.
authors.forename: Lisa
authors.initials: L
authors.lastname: Alexander
authors.affiliation: Murray State University, KY, USA lliljequist@murraystate.edu.
authors.forename: Laura
authors.initials: L
authors.lastname: Liljequist
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008570:Memory, Short-Term; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards* / Q000706:statistics & numerical data; D011594:Psychometrics; D012044:Regression Analysis; D015203:Reproducibility of Results; D057566:Self Report; D014888:Wechsler Scales / Q000592:standards* / Q000706:statistics & numerical data
keywords: adult ADHD; assessment; informant-report; self-report; validity