In the Abecedarian Program a particularly notable effect was found for children whose mothers were mentally retarded. Every one of these children who had early intervention had attained an IQ at least _____ points higher than those in the control group.
A)5
B)10
C)15
D)20 or more

Question

Quizplus · Accepted Answer

The Abecedarian Project found that children of mentally retarded mothers who received early intervention scored at least 20 points higher on IQ tests than those in the control group. This highlights the significant impact of early educational interventions on cognitive development.

In the Abecedarian Program a Particularly Notable Effect Was Found