Right now across the world, who is most likely being abused?

As a man ages, it is likely that his voice will tend to get ________ in pitch, and his ability to hear will deteriorate most for sounds that are ________ in pitch

a. higher; high b. higher; low c. lower; high d. lower; low

Karin's mother took her into a rest room at Disney World. The loud and powerful flushing caused Karin to cry. When she and her parents returned home, they found that Karin would not go near the potty chair they were using for toilet training. They concluded that Karin developed a phobia as a result of

a) learned helplessness. b) operant conditioning. c) classical conditioning. d) vicarious conditioning.