Wertheimer was associated with the _____________ school

Which statement is TRUE regarding the frequency of sleep disorders in the United States?

A. Sleep disorders are very rare. B. Sleep disorders are not common, but many people have serious problems with sleep. C. Sleep disorders affect some 25% to 40% of children and adolescents. D. At this time, sleep disorders are so ill-defined by science, the frequency is unknown.

A slogan of Selman's role-taking theory would be,

a. "Take rather than request.". b. "The nail that sticks out will get hammered down.". c. "Show respect for undifferentiated perspectives.". d. "Put yourself inside the other's mind and see things that way.".