Behavior problems and parenting stress in families of three-year-old children with and without developmental delays.

Children and adolescents with mental retardation are at heightened risk for mental disorder. We examined early evidence of behavior problems in 225 three-year-old children with or without developmental delays and the relative impact of cognitive delays and problem behaviors on their parents. Staff-completed Bayley Behavior Scales and parent-completed Child Behavior Checklists (CBCLs) showed greater problems in children with delays than in those without delays. Children with delays were 3 to 4 times as likely to have a total CBCL score within the clinical range. Parenting stress was higher in delayed condition families. Regression analyses revealed that the extent of child behavior problems was a much stronger contributor to parenting stress than was the child's cognitive delay.