PSYA02H3 Lecture 3: PSYA02 Lec3
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Philip rushton-was doing a lot of studies of racial differences on a number of dimensions, including intellectual prowess, and physical and sexual prowess. Ended up coming to this conclusion: you can see clear differences between these three races: caucasian, african american, and asian. These three groups fall on two continuums, intellectual prowess, and physical and sexual prowess. He claimed that in terms of intellectual prowess, this was the ranking: In terms of sexual and physical prowess, this was the ranking: Some studies using the factor analytic approach ended up finding many different factors related to intelligence for example, thurstone (1938) found 7 factors: verbal comprehension, verbal fluency, number, spatial visualization, memory, reasoning, and perceptual speed. However, when a factor analysis was performed on thurstone"s factors, cattell found that two factors underlie the 7 factors. He labelled these two factors fluid intelligence ( gf concepts that are still discussed quite frequently in current intelligence research.
