PSY 375 Lecture Notes - Lecture 17: Nash Equilibrium, Blood Donation, Desmodus
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Sections: the problem of true altruism, trivers"s (1971) theory of reciprocal altruism & vampire bat example, tit-for-tat strategy, more animal examples. The problem of true altruism: sociality can impose many costs. Increased risk of predation and disease: sociality can bring many benefits. Decreased risk of predation and disease (possibly) Https://www. youtube. com/watch?v=p3xmqbnsrsk: when animals live together or otherwise cooperate, presumably they do so because it is ultimately in their best interest to do so. He"s making the best of a bad job. and, as a byproduct of his own self-interest, he also benefits the dominant lion. This kind of situation is known is mutualism. Animal a does what"s in its best interests. A and b don"t necessarily need to obtain exactly the same benefits for both to benefit. Mutualism doesn"t pose a problem for evolutionary theory. In long-tailed manakins, two males perform a vocal duet to attract females and then perform an elaborate cartwheel display.
