GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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heredity has no influence on an individual’s mean IQ score.
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heredity has little influence on an individual’s mean IQ score.
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heredity has a large influence on an individual’s mean IQ score.
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heredity has the same influence on an individual’s mean IQ score as environment does.
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Detailed explanation-1: -Heritability measures how important genetics is to a trait. A high heritability, close to 1, indicates that genetics explain a lot of the variation in a trait between different people; a low heritability, near zero, indicates that most of the variation is not genetic.
Detailed explanation-2: -It is one of the best predictors of important life outcomes such as education, occupation, mental and physical health and illness, and mortality. Intelligence is one of the most heritable behavioural traits.
Detailed explanation-3: -Hereditary Influences Family studies show that intelligence tends to run in families. Twin studies show a higher correlation between identical twins in IQ than between fraternal twins. This holds true even when identical twins reared apart are compared to fraternal twins reared together.
Detailed explanation-4: -Early twin studies of adult individuals have found a heritability of IQ between 57% and 73%, with some recent studies showing heritability for IQ as high as 80%. IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults.