Psychology 3228 Lecture Notes - Lecture 6: Postpartum Depression, Ultimatum Game, Blind Experiment

• School: Western University
• Department: Psychology
• Course: Psychology 3228
• Professor: Scott Mac Dougall- Shackleton

Document Summary

Self-interest of genes: natural selection results in increase of best replicators, a gene that assists other genes in replication will not increase in number. Altruism: behaviour that increases reproductive success of another individual at a cost to the 1st individual. Genes that promote self-sacrifice won"t be passed on & thus can"t evolve via natural selection. Nepotism: the practice among those with power or influence of favoring relatives or friends, especially by giving them jobs. Males disperse & females settle near home closely related females live nearby. Alarm calling is more likely in: older animals, females. Helping behaviour directed to relatives is typically regarded as nepotism, not altruism. Coefficient of relatedness (r): measure of proportion of genome shared in common. Probability that a given gene is shared in common between 2 individuals. Mother passes her genes to each offspring r = 0. 5. From mother on average of maternal genes in common.