Define the concept "risk behaviour" and explain why it is important for teenagers to investigate and be knowledgeable about it.

Risk behavior is the name given to the conduct of a person who acts on impulse and without considering the consequences, exposing himself to danger situations. It is quite common in adolescence because it is a phase of life in which values are still being formed, there are many doubts and a need to be free through acts of rebellion. It is therefore important for young people to be well informed and aware of the consequences of such inappropriate behavior.

For example, alcohol consumption can be considered risky behavior when it is done irresponsibly. Alcohol affects an individual's judgment and may lead them to engage in dangerous situations such as accidents and fights.

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.

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