The biological perspective assumes that behavior is caused by that of the nervous system. So everything we say, do and think is due to brain activity between neutrons. Since our brains are somewhat determined by the genes we receive from our parents, our behavior may be predetermined by these genetic factors. Since our genes are part of the theory of evolution, psychologists believe that behavior may have evolutionary explanations for why we act the way we do. Genetic influences, in certain behaviors such as hallucinations and other disorders, are the effect of defective inherited genes. These genes are believed to be the cause of dysfunctions within the nervous system, thus explaining our behavior. This perspective holds that nurture has more to do with behavior than nature; it also provides unambiguous predictions, meaning it can be scientifically justified and proven. Behavior is validated based on biological terms such as genes. An old theory of “biology as destiny” emphasized that the nervous system, including the brain, was the basis of all behavior. However, the brain has not always been considered the center of mental activity; early philosophers like Aristotle believed that the heart influenced our mind. It was not until 1890 that William James concluded that we could better understand humans through the study of the nervous system. Recently, MRI, PET, and CT scanning have advanced our understanding of neurological systems. The nervous system is like a large processing system, capable of receiving information through our five senses, storing and producing information as well as through memory and memorization. The nervous system is made up of two sections: the central nervous system (CNS) and the peripheral nervous system. Plus the Periphery......middle of paper......drugs. Perhaps it’s the ability of drugs to make us forget the current problems we face. Another factor that influences and reinforces drug use is the fact that when not using the drug, users do not feel well. The way this drug makes them feel makes them believe that to feel good about themselves, they must use and consume it. Negative reinforcement in this situation would also be a good example, because if a family member dies from an overdose, then one knows the consequences of drug use that can lead to death and is more likely to not take it. consume. An example of punishment would be if one of your parents tells you not to do drugs because if you do they will punish you very severely so that the child knows what will be the reason why he will even think about doing drugs . So don't eat them.