Psychology 2070A/B Lecture Notes - Lecture 9: Social Exchange Theory, Prosocial Behavior, Effective Altruism

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Altruism in other animals: some species of birds, mammals, fish and insects are known to exhibit examples of altruistic behaviour, precision rescue behaviours in tetramorium sp. 2013) (cid:862)altruisti(cid:272) (cid:271)eha(cid:448)ior, i(cid:374) (cid:449)hi(cid:272)h o(cid:374)e i(cid:374)di(cid:448)idual pro(cid:448)ides aid to a(cid:374)other at so(cid:373)e (cid:272)ost to itself, is well documented. However, some species engage in a form of altruism, called rescue, that places the altruist in immediate danger. Here we investigate one such example, namely rescuing victims captured by predators. In a field experiment with two north american ant species, tetramorium sp. E and prenolepis imparis, individuals were held in artificial snares simulating capture. E, but not p. imparis, exhibited digging, pulling, and snare biting, the latter precisely targeted to the object binding the victim. These results are the first to document precision rescue in a north american ant species; moreover, unlike rescue in other ants, t. sp.

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