PSYC 3100 Lecture Notes - Lecture 8: Parental Investment, Hominidae, Pair Bond
23 Mar 2016
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Document Summary
Occurs when two individuals are more closely related than any two randomly chosen individuals. The most extreme form of inbreeding is between irst degree relaions (mother-son, father- daughter, sister-brother) Inbreeding depression: decrease in itness of ofspring among inbreeding animals. Inbreeding avoidance: a tendency to avoid incest that is shared with other animals, inbred animals are less viable and have an increased likelihood of sterility. We can predict that ns will favour animals that avoid incest: mechanisms. Familiarity: familiarity may lead to avoidance, preference for raised apart is stronger than the preference for non-kin in rats, a natural experiment. Westermark proposed that familiarity explains incest avoidance (in humans) Wolf evaluated this hypothesis in a natural experiment that studied the marriage pracices in taiwan. Based on marriage records, wolf compared major marriage to minor marriage . Major: bride and groom don"t meet unil the day of. Minor: bride adopted and raised with the husband to be.
