The research method that would be best at determining that human behavior is either a product of nature or nurture would be______________.

题目解析

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The research method that would be best at determining that human behavior is either a product of nature or nurture would be______________.

题目解析

BlackTom AI · Accepted Answer

Consider the research question: determining whether human behavior is shaped by nature or nurture. This is a classic domain for comparing genetic and environmental influences.
Option 1: 'twin studies with non-identical twins' — This design compares fraternal twins who share about 50% of their segregating genes. While informative for estimating genetic influence, non-identical twins do not maximize the genetic similarity to clearly separate genetic from environmental effects. Therefore, this option is less powerful than using identical twins when trying to disentangle nature and nurture.
Option 2: 'correlational research' — Correlational studies identify associations between variables but cannot establish causation or disentangle genetic from environmental contributions to behavior. They offer limited insight into nature versus nurture because they do not control for genetic similarity or environmental sharing in a structured way.
Option 3: 'twin studies with identical twins' — Identical (monozygotic) twins share nearly all of their genetic material, while often growing up in similar environments. When identical twins are reared apart, or compared across varying environments, researchers can more directly infer genetic influence versus environmental influence. This design is widely regarded as the best approach for parsing nature and nurture in behavior, especially when paired with adoption or rearing-apart studies.
Option 4: 'naturalistic observation' — This method focuses on observing behavior in natural settings without experimental manipulation. While valuable for descriptive data about behavior in real-world contexts, it does not inherently separate genetic and environmental contributions and therefore is not optimal for determining nature versus nurture.
In summary, the core strength of this question rests on the comparative genetic similarity between twins. Non-identical twins share less genetic material, which reduces their usefulness for isolating inheritance effects. Correlational designs lack causal separation between genetics and environment. Naturalistic observation provides rich behavioral data but not a decisive test of nature versus nurture. Identical-twin studies, especially when considering rearing conditions, maximize the opportunity to disentangle genetic and environmental factors influencing behavior.

The research method that would be best at determining that human behavior is either a product of nature or nurture would be______________. 题目解析

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