Most sleep researchers distinguish among the stages of sleep on the basis of _____ recordings

At what age does conduct disorder usually appear?

a.) between the ages of 6 and 10 b.) between the ages of 3 and 5 c.) between the ages of 7 and 15 d.) between the ages of 15 and 18

The unconscious use of physical symptoms to reduce psychological distress would be an example of

a. primary gain. b. secondary gain. c. tertiary gain. d. psychosomatic gain.