PSYCH 1XX3 Lecture Notes - Lecture 2: Semen Quality, Cuckold, Parental Investment
18 Jan 2017
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Document Summary
Heritable variants lead to differential reproductive success. Selective selection- the evolution of characteristics not because of survival advantage, but because of mating advantage. Intrasexual competition- members of the same sex compete with each other, and the winner gain mating access to the opposite sex. Intersexual competition- members of one sex prefer certain qualities in mates. Female finds male with lower voice pitch more attractive, but it can affect the males like : negatively influence to immune system, correlated with lower seaman count, sexual selective trait- lower voice pitch leaves more offspring. Yes, testosterone weakens the immune system and correlates with lower semen quality. Behaviours= psychologist mechanism + input from environment. Evolved psychologist mechanism are coded in the brain. Evolved psychologist mechanism can be describe as information processing devices to solve adaptive problems. Genes increase their own replication in 2 ways: direct: influence individual bodies to survive & reproduce.
