Faulty pronunciation often has a negative effect on a speaker's ________ because listeners get the

It is difficult to design a research task that clearly shows if a behavior is learned or inherited

a. True b. False

Which of the following statements about social functions of facial expressions is false?

a. Bowlers smile more at the pins than at their friends after a good roll. b. Babies smile more often when they expect to make eye contact with mothers. c. Subjects watching pleasant movies alone smile less than when they watch the same movies with their friends. d. Just imagining others are present facilitates facial displays.