GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the extent to which an individual’s intelligence is attributable to genetic factors.
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the proportion of variation in intelligence among individuals that is attributable to genetic variation.
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the extent to which the distribution of intelligence scores of a group approximates a normal curve.
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a general underlying intelligence factor that is measured by every task on an intelligence test.
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Detailed explanation-1: –Estimates of the heritability of intelligence (extent to which intelligence test score variation can be attributed to genetic variation) range from 50 to 80 percent.-The most genetically similar people have the most similar intelligence scores.
Detailed explanation-2: -Heritability is a measure of how much a trait’s variation (such as the level of your mathematical intelligence) seems to be the result of the parents’ physical characteristics, versus the effects of other factors, such as environment, exposure to stimuli, random chance, etc.
Detailed explanation-3: -However, for intelligence, heritability increases linearly, from (approximately) 20% in infancy to 40% in adolescence, and to 60% in adulthood. Some evidence suggests that heritability might increase to as much as 80% in later adulthood47 but then decline to about 60% after age 80.
Detailed explanation-4: -Intelligence is highly heritable and predicts important educational, occupational and health outcomes better than any other trait. Recent genome-wide association studies have successfully identified inherited genome sequence differences that account for 20% of the 50% heritability of intelligence.
Detailed explanation-5: -In fact, heritability is formally defined as the proportion of phenotypic variation (VP) that is due to variation in genetic values (VG). Genotypes or genotypic values are not passed on from parents to progeny; rather, it is the alleles at the loci that influence the traits that are passed on.