__________ gestures are often used in conjunction with descriptions of motion events, with the speaker making hand or finger movements to mimic the manner and path of the action.

Which of the following is true regarding the study of the heritability of intelligence?

A) The study of intelligence and its heritability is only a few decades old. B) The study of heritability has not changed very much over the last 50 years. C) The study of intelligence and its heritability is over a hundred years old. D) Modern research on the heredity focuses almost exclusively on ethnicity.

Regarding insecure-avoidant attachment, why do infants turn away from or ignore their mothers when they return to the room?

A) They have not developed special bonds with their mothers B) They don't need comforting. C) They are angry with their mothers. D) There is no clear consensus among researchers about this behavior.