Assessment of eight preschool children with a history of prenatal cocaine exposure and eight peers without such history found no statistically significant differences between groups on multiple behavioral variables or language skills. Cocaine-exposed children did exhibit higher levels of passive behavior. (Author/JDD)

Four boys (ages 5 to 12) with developmental disabilities and severe challenging behaviors were evaluated using two functional assessment procedures: different analog probe conditions, and direct classroom observation of the child's behavior, antecedents, and consequences. Results raised questions about the reliability and ecological validity of…