The research design that involves testing groups of subjects of different ages multiple times and comparing their scores with their own scores in previous periods and with the scores of new groups of adults of the same ages is called

A decrease in the rate of reinforcement on one component of a multiple reinforcement schedule that results in an increase in rate of response on the other component is a(n) ________.

a. discriminatory contrast b. positive contrast effect c. anticipatory contrast d. negative contrast effect

Charlotte is preparing dinner for her family

She just finished running nearly 10 miles and plans on another run after dinner. As she dishes out meatloaf and potatoes to her mother, father, and brother, she reserves a small bowl of broccoli for herself. What eating disorder is Charlotte at risk for? A) Bulimia nervosa B) Bulimianorexia C) Anorexia nervosa D) Hysteria