Effects of preschool education beyond increase in intelligence quotient (IQ) are explored. The conclusion that preschool programs engender relatively few lasting beyond-IQ effects is challenged by L. J. Schweinhart and D. P. Weikart in their response contending that preschool education enhances general competence throughout life. (SLD)

Claims that the Carolina Abecedarian Project, an early intervention with children from economically and socially impoverished homes, has produced and maintained higher IQs in children at risk of mental retardation are examined for approximately 112 children. Assertions of project success are reviewed, and the implications are discussed. (SLD)