The study of attitudes and stereotypes of age reveals that when only chronological age is known, younger adults are judged more favorably than older adults

All of the following statements about separation anxiety disorder are true EXCEPT

a) Many children recover from separation anxiety disorder within a short period of time. b) One study showed a clear relation between separation anxiety disorder and the development of panic disorder in adolescents. c) Girls are more likely to report separation fears than boys. d) This disorder may not lead specifically to panic disorder, but may result in the onset of one of many different types disorders.

Which of the following reinforcement schedules produces behaviors which are difficult to extinguish?

a. interval b. fixed c. partial d. continuous