PSYC 100 Chapter Notes -Cell Membrane, Encephalization, Nepotism

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Dr.Ada Mullett

Document Summary

Analyse the adaptive function of romantic relationship, kin relationships, friendship, and dominance hierarchies. Evolutionary psychology: concerned with evolutionary underpinning of behaviour adaptive significance and utility of behaviours. One gene, one disorder (ogod): one gene is responsible for a disorder. Pedigree (one gene) studies ineffective for mental disorders since they are polygenic. Allelic association designs contribute to study of polygenic disorders and traits like intelligence and personality. Successful genes have the ability to reproduce. If population is homogenous environmentally, h2 will be higher, if it is genetically homogenous, heritability estimates will be lower. Genes that increase chance of survival (give additive variance) become more common (have increased gene dosage) until they no longer add to survival (non-additive variance) Evolutionary fitness: probability that the line of descent from an individual with a specific trait will not die out. Traits studied (intelligence, antisocial behaviour, personality) more affected by genetics. Genetics -> non shared environment -> shared environment.