Which statement is true regarding the effects of genes and environment on temperament and personality?

Question

Quizplus · Accepted Answer

Studies have shown that the shared environment (such as upbringing in the same home) has little to no effect on similarities in temperament or personality among siblings. This suggests that genes and nonshared environmental factors (such as unique experiences and interactions outside of the home) play a greater role in shaping individual differences. Option A and B are incorrect as research has shown that genes do make a significant contribution to individual differences in temperament, but not to the extent that they account for all of it. Option C is also incorrect as nonshared environmental influences have been found to play a role in shaping temperament and personality.

Which Statement Is True Regarding the Effects of Genes and Environment