PSYCH 2AA3 Lecture 8: Lecture 8 - Individual and Group Differences in Intelligence (Sept 28)
30 Sep 2017
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Lecture outline: data supporting heritability of intelligence (about 80% based on genes, data supporting effects of environmental factors on intelligence. Sample behavioural genetics data 1: bouchard group, minnesota twin study, 1990s, genes are very important here. Identical twins together and apart concordance is not significant. Sample behavioural genetics data 2: bouchard group, minnesota twin study, 1990s, adoptive child concordance more similar to bio parents iq, adoptive child concordance less similar to adoptive parents iq. Gene-environment interactions: rats, cooper & zubek (1950s, maze bright vs. maze dull rats, found big differences between maze bright and maze dull in normal. Mb and md rats in impoverished environment, mb rat"s ability declined. More on social economic status: cumulative risk, the more risk factors you have, the bigger the impact is on you, risk factors impede your development, sameroff et, al. (1993) Interest in academic achievement: having conversations with mom/dad, emotional responsiveness, lowered control .
