PSYC 3100 Lecture Notes - Lecture 8: Kibbutz, Breastfeeding

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Pat Barclay

Document Summary

Why learn to identify kin? (all predictions and results are all else being equal ) Target altruism toward them: nepotism: preferably helping/ favoring kin (e. g. willingness to aid, food sharing, support in violent conflict) Avoiding harming them too much (e. g. , less harm to kin than non-kin) Ki = kinship index (toward individual i ) lieberman et al. Phenotype matching: individual learns its own phenotype directly or from relatives, compares new individuals to this phenotype. Example: when raised with a step sibling and situational cues don"t work: note: can include last name, behavioral traits from parents, study: debruine (2002) facial resemblance enhances trust. Participants trusted people more with money whose faces were morphed to resemble theirs. Less sexually attracted to perceived kin (proximate mechanism to avoid inbreeding: kin identification upregulates altruism, downregulates sexual attraction. Early childhood association is a statistical, situational predictor of childhood.