Six Hong Kong preschoolers with Down syndrome who attended a center-based educational intervention program were assessed and matched on age, mental age (MA), and IQ. Three of the preschoolers also attended regular preschools two days per week. After a year, the children who also had attended regular preschool had higher MA and IQ. (Author/CR)

Program planning for economically deprived children might be improved if behavioral information pertinent to specific subcultural groups were systematically obtained. This prospectus focuses on developing a three-part behavioral model which, when integrated, would identify and profile the nature of disadvantagement in terms idiosyncratic and…