Publications

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Society and the Adolescent Self-Image

Over 5,000 high-school students of different social, religious, and national backgrounds were studied to show the effects of family experience, neighborhoods, minority groups, e...

1965 Princeton University Press eBooks 28687 citations

The Evolution of Cooperation

Cooperation in organisms, whether bacteria or primates, has been a difficulty for evolutionary theory since Darwin. On the assumption that interactions between pairs of individu...

1981 Science 20009 citations