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  2. Aggressionism - Wikipedia

    en.wikipedia.org/wiki/Aggressionism

    Aggressionism is a philosophical theory that the only real cause of war is human aggression, which refers to the "general tendency to attack members of one's species." [1] It is argued that aggression is a natural response to defend vital interests such as territory, family, or identity if threatened. [1]

  3. Winner and loser effects - Wikipedia

    en.wikipedia.org/wiki/Winner_and_loser_effects

    A fish from the respective genus Rivulus. The winner and loser effect is an aggression phenomenon in which the winner effect is the increased probability that an animal will win future aggressive interactions after experiencing previous wins, while the loser effect is the increased probability that an animal will lose future aggressive interactions after experiencing previous losses. [1]

  4. Avoidance response - Wikipedia

    en.wikipedia.org/wiki/Avoidance_response

    An avoidance response is a behavior based on the concept that animals will avoid performing behaviors that result in an aversive outcome. This can involve learning through operant conditioning when it is used as a training technique.

  5. Sociobiology - Wikipedia

    en.wikipedia.org/wiki/Sociobiology

    Sociobiologists maintain that human behavior, as well as nonhuman animal behavior, can be partly explained as the outcome of natural selection. They contend that in order to fully understand behavior, it must be analyzed in terms of evolutionary considerations. Natural selection is fundamental to evolutionary theory. Variants of hereditary ...

  6. Dear enemy effect - Wikipedia

    en.wikipedia.org/wiki/Dear_enemy_effect

    The ultimate function of the dear enemy effect is to increase the individual fitness of the animal expressing the behaviour. This increase in fitness is achieved by reducing the time, energy or risk of injury unnecessarily incurred by defending a territory or its resources (e.g. mate, food, space) against a familiar animal with its own territory; the territory-holder already knows about the ...

  7. Agonistic behaviour - Wikipedia

    en.wikipedia.org/wiki/Agonistic_behaviour

    Agonistic behaviour is a result of evolution, [5] and this can be studied in a number of species facing different environmental pressures. Though agonistic behaviours can be directly observed and studied in a laboratory setting, it is also important to understand these behaviours in a natural setting to fully comprehend how they have evolved and therefore differ under different selective ...

  8. Anti-predator adaptation - Wikipedia

    en.wikipedia.org/wiki/Anti-predator_adaptation

    The selfish herd theory was proposed by W.D. Hamilton to explain why animals seek central positions in a group. [43] The theory's central idea is to reduce the individual's domain of danger. A domain of danger is the area within the group in which the individual is more likely to be attacked by a predator.

  9. Genetics of aggression - Wikipedia

    en.wikipedia.org/wiki/Genetics_of_aggression

    In particular, the serotonin 5-HT seems to be an influence in inter-male aggression either directly or through other molecules that use the 5-HT pathway. 5-HT normally dampens aggression in animals and humans. Mice missing specific genes for 5-HT were observed to be more aggressive than normal mice and were more rapid and violent in their ...