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Which of the following observations provides the best evidence that intelligence test scores are influenced by heredity?
A) Japanese children have higher average intelligence scores than do American children.
B) Fraternal twins are more similar in their intelligence scores than are ordinary siblings.
C) The intelligence scores of children are positively correlated with the intelligence scores of their parents.
D) Identical twins reared separately are more similar in their intelligence scores than fraternal twins reared together.
Heredity
The passing of traits from parents to offspring through genes, influencing characteristics such as appearance, health conditions, and potential talents.
Fraternal Twins
Siblings born at the same time who have developed from two different eggs fertilized by separate sperm, resulting in genetically distinct individuals.
Intelligence Test Scores
Quantitative measures derived from assessments designed to evaluate an individual's cognitive abilities in comparison to a statistical norm.
- Grasp the role of heredity and environment in determining intelligence.
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Learning Objectives
- Grasp the role of heredity and environment in determining intelligence.
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