PSYCH361 Chapter Notes - Chapter 10: Cooperative Breeding, Inclusive Fitness, Pleistocene

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH361
• Professor: Jennifer Stolz

Document Summary

You are more likely to perform altruistic acts if the person who benefits is kin rather than a stranger. When the cost to the individual is less than the degree of relationship times the benefit. Genes that support altruistic behaviour will be more likely to be passed on when the benefit and the degree of relationship are higher than the cost. Inclusive fitness includes both the darwinian idea of fitness and the manner in which altruism contributes. Genetic relatedness is an important factor in determining both positive and negative relationships. Our brain is able to categorize individuals in terms of their relatedness to ourselves. Our brain is also able to compute the costs and benefits of interacting with these individuals. We tend to marry others who are more similar to ourselves. Our friends are also more genetically similar to us than randomly matched pairs.