The Flynn effect is partly caused by changing fertility patterns

Massive IQ gains in 14 nations: What IQ tests really measure.

James R. Flynn · Psychological Bulletin · 1987 · 1.8K citations

Education, Educational Measurement, Psychology +13

Family Size and the Quality of Children

Judith Blake · Demography · 1981 · 851 citations · Full text

Social Sciences, Child Health, Human Development +10

Family Configuration and Intelligence

Robert B. Zajonc · Science · 1976 · 633 citations

Education, Educational Psychology, Human Development +17

Searching for justice: The discovery of IQ gains over time.

James R. Flynn · American Psychologist · 1999 · 472 citations

Education, Educational Psychology, Psychology +7

Birth Order, Family Size, and Intelligence

Lillian Belmont, Francis Marolla · Science · 1973 · 400 citations

Social Sciences, Human Development, Psychology +14