Kasper’s Reviews > The Kindness of Strangers: How a Selfish Ape Invented a New Moral Code > Status Update
Kasper
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Price’s Theorem shows how costly traits like alarm calling can increase if they benefit groups. Alarm callers decline within groups due to fitness costs, but groups with more callers survive better, supporting Hamilton’s inclusive fitness. Wilson’s group selection suggests these groups thrive, contributing more to future generations. So, while alarm caller frequency drops within each group, their total number
— Oct 26, 2024 12:12PM
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Kasper
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Parochial altruism is a type of behavior where people are more likely to help members of their own group than those outside of it. It's characterized by a combination of "in-group love" and "out-group hate". Darwin 1871
— Oct 26, 2024 12:43PM
Kasper
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Intra-groups (within groups)
Multi-level selection
Multilevel selection (MLS) theory is a framework that explains how selection can occur at multiple levels of biological organization, including groups and individuals. It's an extension of natural selection theory and is used to explain the evolution of prosocial traits, which are traits that benefit others or the group as a whole.
— Oct 26, 2024 11:50AM
Multi-level selection
Multilevel selection (MLS) theory is a framework that explains how selection can occur at multiple levels of biological organization, including groups and individuals. It's an extension of natural selection theory and is used to explain the evolution of prosocial traits, which are traits that benefit others or the group as a whole.
