Heredity & Environment
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When microanalyzing the effects of genetic limits and environmental enrichment on giftedness and Intelligence Quotient (IQ) under the interactive dynamics of 'Heredity' and 'Environment' in child development, which of the following statements is most authentic and scientifically true with reference to Arthur Jensen's model of heredity and the concept of 'Reaction Range'?
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Detailed Explanation
Correct Answer Analysis
Under the interaction of heredity and environment in child development, the principle of 'Reaction Range' explains that genes set a potential range (upper and lower limits) for a person's traits, such as intelligence. However, the exact point an individual reaches within that range depends on the quality and enrichment of their environment. Thus, genetic limits bound the maximum potential.
Why other options are incorrect:
- Option B: Environmental enrichment cannot permanently breach the strict biological upper limits set by genetics.
- Option C: Heredity plays a substantial and foundational role in intelligence, making it incorrect to label it as negligible.
- Option D: Heredity profoundly influences intellectual and cognitive traits, not just physical ones.
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