The subjective and unpleasant feeling that there are too many people in one area is called ____

Which is most accurate with regard to why the purging and nonpurging subtypes of bulimia nervosa were removed from DSM-5?

a. They were not supported by the research. b. The subtypes were separated into distinct diagnoses. c. This distinction was only useful when deciding on treatment strategies. d. The distinction was confusing to clinicians.

B. F. Skinner invented the "baby box" in order to _________

a. conduct operant conditioning experiments on babies. b. store babies so they did not need to be held or cared for. c. modify babies' behavior. d. make babies more comfortable than an ordinary crib would.