Tit-For-Tat in guppies (Poecilia reticulata): the relative nature of cooperation and defection during predator inspection

The Evolution of Cooperation

Robert Axelrod, W D Hamilton · Science · 1981 · 20.3K citations

Life Sciences, Biology, Evolutionary Biology +17

Geometry for the selfish herd

W D Hamilton · Journal of Theoretical Biology · 1971 · 3.5K citations

Social Sciences, Economics, Behavioral Economics +5

The evolution of reciprocity in sizable groups

Robert Boyd, Peter J. Richerson · Journal of Theoretical Biology · 1988 · 722 citations

Social Sciences, Evolutionary Biology, Social Psychology +11

Threat-sensitive predator avoidance in damselfish-trumpetfish interactions

Gene S. Helfman · Behavioral Ecology and Sociobiology · 1989 · 626 citations

Life Sciences, Ecology, Zoology +13

TIT FOR TAT in sticklebacks and the evolution of cooperation

Manfred Milinski · Nature · 1987 · 617 citations

Life Sciences, Biology, Evolutionary Biology +12