As part of a smoking cessation program, paul receives an injection of a nausea-inducing drug and then is asked to smoke a cigarette. even though he knows he is receiving the drug, it is hoped that paul will associate the nausea symptoms with smoking and will thus smoke less. this example best demonstrates the procedures typically used in

Aversive conditioning

Explanation:

Aversion conditioning is the conditioning process that is used to avoid undesired behavior. The stimuli are associated with the noxious stimulus or undesired stimulus to avoid undesired behavior or response. This is a therapy that is used to reduce the behavior that is undesirable for all.  

Thus Paul gets an injection to avoid excessive smoking. This injection is given because Paul can avoid that undesirable behavior that is not accepted in the society.  

This conditioning is useful in another disorder such as OCD.

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.