The Outcomes of Preschool Enrichment Projects Such as Head Start

Multiple Choice

The outcomes of preschool enrichment projects such as Head Start and the Abecedarian Project indicate that

A) early intervention programs are ineffective.
B) children's achievement scores can be improved,but IQ is stable over time.
C) children's IQ scores can be improved through environmental intervention.
D) there is nothing conclusive to say about the effects of the environment on IQ.