Entry:

Van Court, Marian and Bean, Frank D., "Intelligence and Fertility in the United States: 1912-1982," Intelligence, 9 (1985), 23-32.

Abstract:

In examining the relationship between IQ and completed fertility, correlations are predominantly negative for cohorts born between 1894 and 1964 but are significantly more positive for cohorts whose fertility was concentrated in the baby boom years. Previous reports of positive correlations appear to have been biased in their restriction of samples to a typical cohorts. Childless respondents averaged slightly higher scores than those with children.

1972-1978, 1980, 1982