There is less contact between siblings in middle adulthood compared with young adulthood

Infants' auditory skills are equal to those of an adult, except that

A) they can hear low-pitched sounds better than adults do. B) they cannot hear low-pitched sounds at all. C) they cannot hear high-pitched sounds as well as adults do. D) they can hear high-pitched sounds better than adults do.

Recall that Ekman and Friesen (1971) have demonstrated that Fore tribespeople from a preliterate culture in New Guinea were able to decode the facial expressions of Westerners and encode emotion easily interpretable by Westerners

Their findings suggest that Darwin was a. right—facial expressions are species specific. b. wrong—facial expressions are culture specific. c. right—facial expressions are culture specific. d. wrong—facial expressions are universal among humans.