Compare and Contrast the five main perspectives in psychology

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          In this assignment I will be describing the five major theoretical approaches to psychology. These are; Behaviorism, Biological, Cognitive,

Humanist and Psychoanalytical. I will then attempt to compare and contrast them, and its practical application in modern psychology.

         The biological approach focuses on the biological underpinnings of behavior and the effects of evolution and genetics. The premise is that behavior and mental processes can be explained by understanding human physiology and anatomy. Biological psychologists focus mostly on the brain and the nervous system. It implies the use of biology as a means of describing and explaining psychological functioning. They believe our behaviour is linked to the processes in our physiological make-up. The functions of the brain, nervous and hormonal systems are key to their research.   The origins of this approach can be traced back to the Greek physician Galen, who believed that the levels of such fluids as blood and bile affected our temperament and personality. As our understanding of the brain and associated systems continues to evolve so will the ideas and theories of this paradigm.   One aspect of this approach is the notion of Reductionism (also used by Behaviourists). This is where area of research is broken down into basic forms or units. From the biological perspective it sees nerve activity, muscle movements and neuro-chemical processes as an understanding of psychological functioning.  There have been numerous research studies in this field. One of the earliest examples is by a doctor Broca (1861). In a post mortem he discovered that a specific area of the brain was responsible for the subjects inability to speak. This gave evidence to a localisation of brain functions, which corresponded to the view that behaviour had a physiological influence.

             

            This perspective has grown significantly over the last few decades, especially with advances in our ability to explore and understand the human brain and nervous system. Tools such as MRI scans and PET scans allow researchers to look at the brain under a variety of conditions. Scientists can now look at the effects of brain damage, drugs, and disease in ways that were simply not possible in the past.

           Recent advances in research and practice on biological psycology analyse phisyological basis of stress and their effects.

                 Biological approach investigated the role of genetics in schizophrenia, comparing 47 adopted children whose biological mother had schizophrenia, with control group of no schizophrenia history. The result was that none of the controls were diagnosed, 16% of the schizophrenic mothers’’ offspring had the illness. Concluding that Inheritance does play a part on the disorder. Excess of dopamine has been implicated in schizophrenia. Stating that Inheritance can put people at risk, stress can also play a part  and several genes are responsible for the symptoms. Biological treatments such as anti-psychotic drugs and Chlotopromazine can reduce positive symptoms and blocks dopamine receptors in the brain, so neurons done respond to dopamine.

           Biopsychologists are generally deterministic in their outlook (although Daniel  Dennett, a philosopher who is heavily influenced by biopsychology, suggests that  people have a sort of free will). As might be expected, they tend to favour the nature side of the nature-nurture debate. Because they take a very scientific approach to studying people their approach is nomological – they are most interested in the features that people have in common and in understanding the fundamental laws of human behaviour. Their scientific approach also inclines them to explain human behaviour in a reductionist manner, by breaking complex processes down into more fundamental biological ones.

          The next major trend in psychology is  behaviourism. It went further in its rejection of the special nature of mental events, denying that unobservable and unverifiable mental events were properly the subject matter of psychology. Behaviourists believed that because psychology is the study of observable behaviours, mental events – which cannot be observed – are outside the realm of psychology. Behaviourism is therefore the study of  the relation between people’s environments and their behaviour; what    occurs within their heads is irrelevant.

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      One of the first behaviourists was Edward Thorndike (1874-1949), an American psychologist who studied the behaviour of animals. He noticed that some events, usually those that one would expect to be pleasant, seemed to ‘stamp-in’ a response that had just occurred. Noxious events seemed to ‘stamp-out’ the response, or make it less likely to occur. We now call these processes reinforcement and punishment

            This approach has strong strengths and weaknesses. Behaviourists adopted a scientific method to their studies, so results and conclusions can be measured and therefore can be seen as ...

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The writer has described the different psychological approaches in some detail and appears to have some understanding of the differences. However, it would appear that some of the work has been plagiarised. The writing should be in the writer's own words throughout the essay so that it is clear that they have read around the subject and understood it. The writer needs to really get the 'gist' of what each theory is about and then compare and contrast it with the others. At times the writer does not appear to do this. Simple and clear explanations are important, picking out the salient points. There is a great deal of content in this essay so if the comments are taken on board then the score could be improved significantly. Score 3*