Psychometric properties of impulsivity measures: temporal stability, validity and factor structure.
Temporal stability, discriminant validity, and factor structure of an array of performance measures of impulsivity was assessed within samples of normal (N = 48) and behaviorally disordered children (N = 88) ages 6-16 (126 M, 10 F; mean age = 10.57 years; SD = 2.13). Using a relatively conservative standard for adequate temporal stability, 31% of the variables derived from these measures met criterion. Of these, 83% were able to discriminate groups after partialling out the effects of intellectual aptitude and age. Factor analysis yielded a two-factor solution interpreted as representing cognitive (inhibitory control) and motivational (insensitivity to punishment/nonreward) components of impulsivity.
Kindlon
D
D
Developmental Epidemiology Research Unit, Judge Baker Children Center, Boston, MA, USA.
Mezzacappa
E
E
Earls
F
F
D000293:Adolescent; D001362:Avoidance Learning; D002648:Child; D002653:Child Behavior Disorders / Q000523:psychology; D006801:Humans; D007175:Impulsive Behavior / Q000175:diagnosis* / Q000523:psychology*; D002666:Psychology, Child; D011594:Psychometrics; D013647:Task Performance and Analysis