3900Chp9 - Chapter 9: Intelligence and Its Measurement What...

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Chapter 9: Intelligence and Its Measurement What is intelligence? Definitions Intervening Variables Factor Analytic Approaches Alternative Approaches Binet Scales Wechsler Scales Definitions Galton Binet Wechsler Piaget Nature of Intelligence Innate vs. Environment Heritability index Twin studies have demonstrated good evidence of genetic influence Genetic Evidence Twin, family, and adoption studies Biological mothers, tested at the time of delivery: IQ = 86. 13 years later, their children had an IQ of 107 Genetic Evidence French studies have shown increases in IQ of children adopted into families with a higher SES Stability of Intelligence Is there a decline in IQ across age cohorts? Cross-sectional studies Intergenerational effects Longitudinal studies Cross-sequential studies Origins of Intelligence Heredity Influence of genetic and environmental variables is well established Environmental Factors Origins of Intelligence Early malnutrition or exposure to rubella can impair a child’s mental functioning Origins of Intelligence
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3900Chp9 - Chapter 9: Intelligence and Its Measurement What...

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