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3 Cards in this Set
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Studies on the heritability of intelligence |
Ridley (1999) found that intelligence shows genetic cascade I.e. very high correlation if IQ scores if person took same test twice: between MZ and DZ twins. Unrelated correlation for strangers. |
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Studies looking at fluid intelligence: Biological Basis (activity and connectivity) |
Gray et al (2003) had participants do an 'n-back task' (tests working memory) and also measured fluid intelligence using Raven's Progressive Matrices. Found that left lateral PFC during tasks was used more by people with higher intelligence (activation) Finn et al (2005) connectivity in medial + lateral PFC regions predicted fluid intelligence |
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Studies looking at brain structure and fluid intelligence |
Thompson et al (2001) used twins (mz + dz) who did welschlers abstract subtests . Found that the larger the frontal grey matter the more intelligence they had |
