Research involving identical twins growing up in a range of communities suggests that neighborhood differences account for about________ percent of the variability associated with their mental health.

Question

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Research involving identical twins has shown that neighborhood differences account for about 5 percent of the variability in their mental health outcomes. This suggests that while genetics and family environment play significant roles, the neighborhood environment also has a measurable impact on mental health.

Research Involving Identical Twins Growing Up in a Range of Communities