Eileen smiles wherever she goes. She smiles a lot in the classroom, which in turn prompts her fellow students to smile, making them feel happier too. This effect is best explained by which of the following theories of emotion?

African Americans have the lowest rate of death due to coronary heart disease

Indicate whether the statement is true or false

Which of the following is NOT one of the potential concerns regarding the evidence suggesting that prenatal hormones contribute to the shaping of gender differences? a. The study subjects often have abnormal conditions

b. The conclusions are based on large samples from a variety of cultures, making it difficult to draw general conclusions. c. It is risky to draw conclusions about the population based on small samples. d. The findings are much stronger for females than for males.