Elmer, the owner of an auto service station, suddenly began…

Elmer, the owner of an auto service station, suddenly began smashing the front fenders and hoods of two customers’ cars. When asked why, he excitedly explained that he was transforming the cars into “real racing machines.” When an employee tried to restrain him, he shouted that everybody was fired and quickly began breaking the car windows. Elmer is exhibiting symptoms of 

To reduce a patient’s fear of certain medical procedures, a…

To reduce a patient’s fear of certain medical procedures, a therapist repeatedly paired the sight of a hypodermic needle that triggered a learned fear response with the taste of chocolate that triggered an unlearned sense of pleasure. The therapist was most clearly using a technique involving