Recent Research on Shared and Nonshared Environmental Factors and Their

Multiple Choice

Recent research on shared and nonshared environmental factors and their influence on children's developing temperaments has found that _____.

A) genetic factors are the primary influence, regardless of environmental factors
B) parents' attitudes have a direct effect on children's behavior
C) the shared environmental factors are as influential as the nonshared environmental factors are
D) the evidence is inconclusive, and more research needs to be conducted