As adopted children mature, their intellectual test scores grow progressively ________ like their adoptive parents' scores and _______ similar to their biological parents' scores.
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Answer: B. less; more
Explanation
As adopted children grow into adulthood, their measured IQ scores show increasing genetic resemblance to their biological parents and less correlation with adoptive parents. Behavioral genetic studies demonstrate that heritability influences on intelligence become more pronounced with age. Shared family environments exert less influence on adult intelligence than the genetic background inherited from biological parents. Adoption studies provide powerful natural experiments for separating genetic inheritance from shared environmental rearing effects. Longitudinal adoption research tracks cognitive development from infancy through adulthood across diverse family environments. Genetic expression changes across the lifespan, leading to higher heritability coefficients in adulthood than in early childhood.
Stating that scores become more like adoptive and less like biological parents reverses established adoption study findings. Claiming scores become less like both sets of parents contradicts the documented genetic continuity of human intelligence. Stating that scores become more like both sets of parents ignores the declining impact of shared adoptive environments over time.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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