title: Reliability, validity, and preliminary normative data for the Children's Aggression Scale-Teacher Version.
abstract: OBJECTIVE
  To provide preliminary psychometric data on the Children's Aggression Scale-Teacher Version (CAS-T), which was designed to assess severity and frequency of aggressive, as distinct from nonaggressive, disruptive behaviors.
  
  
  METHODS
  The CAS-T has 23 items representing five domains: Verbal aggression, Aggression against objects and animals, Provoked physical aggression, Unprovoked physical aggression, and Use of weapons. The CAS-T was completed for 273 nonreferred boys and 67 clinically referred children (60 boys; 7 girls). Coefficient alpha was assessed separately in clinical and nonreferred groups. Validity was evaluated by comparing CAS-T scores of children with different disruptive behavior disorder diagnoses and by examining the relationship of CAS-T scores to other parent and teacher ratings.
  
  
  RESULTS
  The scale as a whole had excellent reliability as measured by coefficient alpha. Children with conduct disorder were rated significantly higher than those with oppositional defiant disorder, attention-deficit/hyperactivity disorder, and no disruptive behavior disorder diagnosis. Further, patterns of correlations with other rating scales provide strong support for the convergent and discriminant validity of the CAS-T.
  
  
  CONCLUSIONS
  The CAS-T may fill a gap in that it distinguishes among various types and severity of aggression, as distinct from oppositional-defiant behaviors.
authors.affiliation: Department of Psychology, Queens College of the City University of New York, USA. jeffrey_halperin@qc.edu
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Halperin
authors.forename: Kathleen E
authors.initials: KE
authors.lastname: McKay
authors.forename: Richard H
authors.initials: RH
authors.lastname: Grayson
authors.forename: Jeffrey H
authors.initials: JH
authors.lastname: Newcorn
mesh_terms: D000374:Aggression; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis; D019958:Attention Deficit and Disruptive Behavior Disorders / Q000175:diagnosis; D002675:Child, Preschool; D019955:Conduct Disorder / Q000175:diagnosis; D006801:Humans; D008297:Male; D012016:Reference Values; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D013663:Teaching; D000078329:Workforce