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7 Cards in this Set
- Front
- Back
Under what conditions does reciprocal altruism evolve?
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1. Benefits to other outweigh cost to actor
2. Recognition of group members 3. Long-lived species 4. Stable groups: members aren't constantly changing 5. Social species |
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reciprocity vs. similar things
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mutualism: benefit is not delayed (moving a rock together so you can both get out of a cave)
reciprocity: benefit is delayed altruism: benefit is not guaranteed |
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prisoner's dilemma
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-2 suspects are arrested for one in a series of crimes
-questioned separately -confess, cooperate, inform, defect -lighter sentence for defecting *single game: best to defect *iterated game: best to cooperate |
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tit-for-tat
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-start out cooperating
-cooperate as long as other does -defect only after other does -be forgiving *an ESS (evolutionarily stable strategy) |
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evolutionarily stable strategy (ESS)
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a strategy, which if adopted by most members in a population, cannot be bettered by an alternate strategy
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requirements for tit-for-tat
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1. recognition of group members
2. memory for past interactions 3. repeated interactions |
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adaptive function of moral emotions
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1. respect for authority
2. thirst for justice 3. evolution of caring |