PSYCH 3GG3 Lecture Notes - Lecture 8: Twin, Heritability
24 Apr 2017
School
Department
Course
Professor
Document Summary
Is iq predictive: correlates with academic success and professional success, better predictor of success is self-discipline and motivation. Iq is a better predictor of success than the family"s socioeconomic status, etc. Estimating heritability: heritability = v(genes) / v(genes) + v(environment) = v(g*e) Family studies - studies designed to estimate the heritability of a trait in which the concordance of a trait between people is compared to their genetic relatedness. Twin studies - heritability in which the concordance of a trait among monozygotic twins is compared to the concordance of the trait among dizygotic twins. Heritability = (correlation between monozygotic twins - correlation between dizygotic twin) x 2. The elusive heritability of iq: heritability of iq will be different in different socioeconomic group. 26 for those people whose parents had a high-school education or less. 74 for those people whose parents had education beyond high school.
