In Their Report of the Long-Term Effects of Early Intervention

In their report of the long-term effects of early intervention programs, Irving Lazar and Richard Darlington concluded that

A) participants demonstrated multiple gains, such as fewer assignments to special education classes and a lesser likelihood to be retained in a grade or to drop out of school.
B) the programs invariably failed at improving IQ.
C) participants were equally likely to become pregnant as teenagers.
D) job-related successes were better for nonparticipants.