Desiree is having a dream in which she is being chased by four cartoon characters, who are waving large knives at her. "I've got to wake up; this is only a dream," Desiree tells herself while she is in the middle of this dream. Desiree is experiencing ____

For several years, Greg has experienced alternating episodes of very severe depression and episodes of hypomania. What is the most appropriate DSM diagnosis?

a. bipolar I disorder without psychotic features b. bipolar II disorder c. cyclothymic disorder d. mixed bipolar disorder

Enrico, a five-month-old infant, begins to cry, and shortly thereafter, his mother appears, picks him up, and soothes him. Later, when Enrico is alone in his crib, he cries again. Enrico's latter crying episode is an example of a ___

a. reflex b. secondary circular reaction c. tertiary circular reaction d. mental representation