title: The development of hyperactive-impulsive behaviors during the preschool years: the predictive validity of parental assessments.
abstract: The objectives of this study were to establish the different developmental trajectories of hyperactive-impulsive behaviors on the basis of both mother and father ratings at 19, 32, 50, and 63 months, and to examine the predictive validity of these trajectories with respect to later hyperactive-impulsive behaviors, as rated by teachers in the first 2 years of school. Hyperactive-impulsive behaviors were assessed in a population-based sample of 1,112 twins (565 boys and 547 girls) at 19, 32, 50, and 63 months of age. The results revealed a differentiated and consistent view of developmental trajectories of hyperactive-impulsive behaviors derived from these repeated assessments, with 7.1% of children seen by mothers (7% for fathers) as displaying high and stable hyperactive-impulsive behaviors. According to mother ratings, children on a high-chronic trajectory were more likely than other children to display hyperactive-impulsive behaviors at 72 and 84 months according to their teachers. Repeated measures over time and father-based trajectories significantly added to the prediction teacher later ratings of hyperactive-impulsive behaviors. These results support the predictive validity of parental assessment of hyperactive-impulsive behaviors during the preschool years and their use to identify children at risk for further evaluation and possible intervention.
authors.affiliation: GRIP, School of Psychology, Université Laval, Québec, QC, Canada G1K 7P4.
authors.forename: Nancy
authors.initials: N
authors.lastname: Leblanc
authors.forename: Michel
authors.initials: M
authors.lastname: Boivin
authors.forename: Ginette
authors.initials: G
authors.lastname: Dionne
authors.forename: Mara
authors.initials: M
authors.lastname: Brendgen
authors.forename: Frank
authors.initials: F
authors.lastname: Vitaro
authors.forename: Richard E
authors.initials: RE
authors.lastname: Tremblay
authors.forename: Daniel
authors.initials: D
authors.lastname: Pérusse
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000235:genetics / Q000523:psychology; D002675:Child, Preschool; D004200:Diseases in Twins / Q000175:diagnosis* / Q000235:genetics / Q000523:psychology; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D007175:Impulsive Behavior / Q000175:diagnosis* / Q000235:genetics / Q000523:psychology; D007223:Infant; D008137:Longitudinal Studies; D008297:Male; D015588:Observer Variation; D010552:Personality Assessment / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D012931:Social Environment