The preschool behavioral classification project: An initial report.

The Behavioral Classification Project (BCP), previously developed for children from 6-13 years of age, was extended to the preschool ages, the goal being to establish factorial dimensions of problem and nonproblem behaviors of children from 4 to 6 years of age. Initially, behavioral items on the BCP form not applicable to preschoolers were eliminated and replaced with new items. When completed, the Preschool Behavioral Classification Project (PBCP) form contained 268 behavioral items and 5 demographic variables. Forms were administered to 1,350 parents of 4-, 5-, and 6-year-olds, and 668 usable forms were returned. Analysis of the data was done by means of the principal components method in which the data were rotated first to orthogonal simple structure and then to oblique simple structure. Twenty-two clearly delineated factors which made nosological sense were obtained. Five additional factors were extracted and although they were not clearly defined dimensions, they contained important behavioral items.