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Roots of Aggression

Roots of Aggression. Two Theories. Ethologists’ Theory of Human Aggression!. Predation vs. Aggression Wynne-Edwards: stable populations --animals don’t all starve equally --competitions & displays (red grouse fight at dawn for 2 hrs. then feed togthr. --swarming

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Roots of Aggression

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  1. Roots of Aggression Two Theories

  2. Ethologists’ Theory of Human Aggression! • Predation vs. Aggression • Wynne-Edwards: stable populations --animals don’t all starve equally --competitions & displays (red grouse fight at dawn for 2 hrs. then feed togthr. --swarming --Tribolium (Chapman) 1 to 32 breeding pairs, after 6 mos. Geet 44 beetles/gram flour

  3. Role of Aggression • Fitness selection (mature breeders) • Cost of aggression (hurt/killed) • Limitations on cost: --Dominance heirarchies (hens/monkeys) or individual territories (bower birds) --Mechanisms that minimize damage: • -- threat display • -- ritualized combat

  4. Ritualized Combat Http://www.cals.arizona.edu/bta/ whatsnew/snakedance.html

  5. Implications for Humans • Eibl-Eibesfeldt: dangerous vs. non-dangerous animals & implications • Humans quickly switched categories via cultural invention, didn’t develop the safeguards • Thus an ethological explanation of human behavior!

  6. Humanistic Theory: Koestler • Focus on War, not bar fights • It’s our human qualities and not our animal nature that makes us dangerous • Pre-history bonding of hunting groups (Love) • Human sacrifice- no inhibition against killing con-specifics • Brain heirarchy (McClain’s tripartite brain) • Symbols: their unique power to influence humans

  7. Mobbing • Mobbing

  8. Human Analogues • Spatial behavior: Hall (intimate 0-1.5, personal 1.5-4, social 4-12, public 12+) • Invasion of space (library tables, • Defensive architecture (Newman) • Middlemeist et al. • Emotions (universality, facial muscles, etc.) (defensive smile)

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