Physiological and Evolutionary Influences on Psychology.

vision, his temporal lobe would have been damaged. The discovery of this theory was founded by Paul Broca, a French anthropologist and physician who stated that when a part of the brain is disrupted, that specific function carried out by that specific part of the brain will be impaired. When he later investigated on stroke victims, he realized that his patients had problems producing speech but were very much capable in understanding them. This condition is known as Brocaʼs aphasia which is the direct and exact opposite of Wernickes aphasia which is a condition that explains the part of the brain that is able to produce speech but unable to apprehend it. This theory was explained by Carl Wernicke. Besides the emphasis on the brain structure, the Neurons in the brain also effect the behavior of man. This occurs because of the neurotransmitters in the brain that sends chemical messengers to the brain in order to function. For example, Serotonin, dopamine, acetycholine and Noradrenaline are all responsible for different affects in the neurons. A lack in one transmitter can cause a defect. For instance, lack of serotonin can affect ones sleep and appetite. In addition to this, neurotransmitters do also have certain effects on ones behavior. It can firstly slow down the cognitive components such as the process of learning, memory and thinking. Secondly, it may effect ones memory and further cause schizophrenia. Thankfully, because the brain is a very complex organ, the neuroplasticity in the brain enables the neurons in the brain to compensate for injury and disease Besides neurotransmitters, Hormones also play an important role when dealing with the human behavior. For occurrence, as humans we often tend to feel the anxiety before an exam and this is usually caused by the adrenaline running through our veins. These factors do somewhat prove that all behavior is psychological. The second principal states that behavior may be influenced by evolutionary processes. Charles Darwin, is the most prominent man behind this theory. His theory explains how species adapt to an environment. A basic experiment was done by scientist Tetsuro Matsuzawa who examined spital memory in young chimps. Humans also took part in this experiment. However, the human participants did make many errors and their accuracy decreased as the numbers were replaced with blank squares more quickly. This experiment was done to prove that firstly both chimpanzees and humans are able to carry out similar brain activities, and secondly chimpanzees show greater memory power due to their adaption to the environment. The third principal in psychology states that behavior can be inborn because it is genetically based. This is evidently simple because it tells us that our behavior can be inherited by our parents. A genetic research had been done based on correlational studies which studied about monozygotic and dizygotic. Scientist discovered that the mono,twins are genetically identical but dyzogotic twins were not. In conclusion to these theories, we understand that these three principals can effect our behavior but has to be evidently proven.