A preliminary study of food-sharing behavior in young chimpanzees.

The Mentality of Apes

1959 • 1,582 citations

Mutual Aid a Factor of Evolution, by P. Kropotkin

1903 • 648 citations

The Social Life of Monkeys and Apes

1932 • 339 citations

Effectiveness of token rewards for chimpanzees.

1936 • 167 citations

Development of an infant chimpanzee during her first year

1932 • 84 citations

Genetic Aspects of Grooming, a Socially Important Primate Behavior Pattern

1933 • 46 citations