In the first half of the 20th century, physical makeup referred to _________, whereas now it refers to

In a study of the relationship between extraversion and the amygdala that is described in the textbook, participants viewed fearful or happy faces while they underwent fMRI scans

Researchers found that the ________ faces elicited relatively high levels of activity in the ________ amygdala of highly extraverted people. a. fearful; left b. happy faces; left c. fearful; right d. happy; right

In the United States, approximately how many children live with both of their biological or adoptive parents?

A) 25% B) 35% C) 50% D) 60%