By the time children in the United States reach age 18, about ________ have experienced a divorce

A person with acute stress disorder is most likely to develop posttraumatic stress disorder when

a. the trauma is especially severe. b. the trauma involves the possibility of death. c. symptoms of numbing, depersonalization, and reliving the trauma are present. d. the person develops a complete amnesia for the traumatic event.

Freud believed that anxiety is the result of

a. difficulties in expressing strong emotion. b. an overabundance of libido. c. preconscious forces that keep the ego and superego in a state of peaceful transition. d. too little psychic energy. e. catharsis.