medium · MCAT chem-phys
Consider the following: Proponents of the 'nature' side of the developmental debate argue that human personality is largely determined by genetic heritage. They point to twin studies showing high correlations in traits between identical twins reared apart. Conversely, 'nurture' advocates emphasize the plasticity of the human brain and the profound impact of early childhood environment. The synthesis of these views suggests that genes provide a range of possibilities, while environment determines where within that range an individual falls.
What is the author's primary purpose in the final sentence?
- The final sentence refutes the claim that the brain possesses meaningful plasticity.
- To provide a compromise that acknowledges the contributions of both genetics and environment.
- The author argues that twin studies alone are the only valid way to measure personality.
- The final sentence shows that the 'nature' advocates ultimately hold the stronger empirical case here.
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