To jacob overcome his smoking habit, a therapist puts him in a room with a carton of cigarettes laced with a chemical to induce nausea. he displays images of the dangers of smoking both on the walls and on a television set. this approach to treatment best illustrates

Negative reinforcement

Explanation:

In aversive conditioning the use of something unpleasant, or a punishment, is the main point to stop an unwanted behavior. It is used to combat addictions such as smoking or alcoholism. By applying a negative reinforcement-aversive stimulus (here is chemicals to induce nausea, images of the dangers of smoking)  immediately before or after smoking the likelihood of the smoking behavior occurring in the future is reduced.

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