The majority of early-intervention programs in the 1960s that were designed to enhance the intellectual development of poor children: were…

The majority of early-intervention programs in the 1960s that were designed to enhance the intellectual development of poor children:

were well-planned, large-scale programs.

initially increased children’s IQ scores substantially.

were ineffective in preventing assignment to special-education classes and decreasing the likelihood of being held back a year in school.

had long-term effects on IQ scores.

 

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