Nature Vs Nurture Theory Essay

Many psychologists agree that nurture play a greater part in the development of a human being. Studies such as those performed on monozygotic twins (identical), who share the same genetics and those performed

“Trying to separate out nature and nurture as explanations for behavior, as in classic genetic studies of twins and families, is now said to be both impossible and unproductive” (Levitt, 1). Social scientists have declared the nature-nurture debate to be unnecessary. Similarly, scientists feel that such debate is not only unhelpful, but also outdated. From geneticists’ perspective, nurture and nature interact to influence

The idea that they came up with was finding identical or fraternal twins in order to draw a comparison between the behaviors that they share. The most common similarities between the twins (after multiple meetings with pairs of twins) can be concluded as genetic, and other factors could be considered due to the environment, like learning a language. In 1983, Bouchard and Lykken brought together these twins who participated in the study. First, they needed to gather identical twins who were separated at birth. The researcher 's’ goal was to gain as much information as possible on these twins within one week. They had fifty hours of studies on many levels. These studies included personality trait scales, aptitude, IQ tests and occupational interest tests.

The documentary Dr. Money and the Boy with No Penis depicts the tragic experience of a young boy and the psychologist who attempts to “treat” him after an unfortunate accident. In a time of little knowledge of sexual variation Dr. John Money proposed the theory that a boy could be raised as a girl, but after years of failed attempts this theory would be shattered. This story began when twins Bruce and Bryan went in to the hospital to have a routine circumcision operation at 7 months of age. On the 27th of April 1966 Bruce was the first of the two twins to be operated on, but the procedure would not go as planned. The boy’s parents were soon informed that their son’s penis had been fully burned off in a nontraditional attempt to burn the foreskin away from the penis. In a position of great confusion the Reimers became hopeful in light of such tragedy as they later became aware of the work of Dr. John Money, a man who was becoming a pioneer in the field of sex change surgery. In meeting with this man the Reimers were informed that their baby boy could live a normal life as a girl.

First of all David Reimer (then known as Bruce) was genetically born a boy however in 1966 his penis was destroyed by accident during a circumcision, his parents then took him to a psychologist and sexologists John Money. Money advised the parents to change the sex of their child since penis reconstruction wasn’t an option then, he was a supporter of the idea that gender wasn’t predetermined genetically and was from the influence of the environment.

Twin studies are a mainstay of the nature verse nurture debate because they allow researchers to conduct “natural experiments” on human beings. When researchers try to determine the relative importance of genetics and environment with regard to a certain condition, they have a hard time because they cannot generally get people with the same genes. This is where twin studies come in. Twins studies are part of the method used in behaviour genetics, which includes all data that are genetically informative. E.g. siblings, adoptees, pedigree data etc. Researchers use this method to estimate the heritability of traits and to quantify the effect of a person 's shared environment (family) and unique environment (the individual events that shape a life) on a trait.

The Minnesota Twin Registry started in 1983 and its goal was to establish a registry of all twins born in Minnesota from 1936 to 1955 to be used for psychological research.., T.J. Bouchard, working in conjunction with the University of Minnesota, started exploring the similarities and differences in characteristics like personality, career interests, and a variety of personal interests between identical twins who were reared apart. Research was conducted on twins from all over the world. The Minnesota Twin study gave scientists a new insight of the role of nature vs. nurture on human development and personality; it was the hope that twin studies would be able to tie genes to specific behaviors. From the study, we understand that twins who were separated at birth and raised in different families

In reading stories about identical twins my point of view is easily understood. Various types of psychologist have analyzed the study of identical twins. It shows that individuals with the same genetic make-up can be totally different, when it comes to personality. Nurture promotes the twins to grow up as separate individuals. Its a lot better if a twin has his or her own personality rather than the same exact personality of the other half. I think this great debate weighs heavier on the nurture side. As a child my parents, and sibling overshadowed my genetic make-up. No matter how much I thought my physical traits made me behave. It did not affect me more than the things that I had seen and been exposed to. The more things that I had seen around and experienced made me the person that I am today. If my genetic make-up was totally different, to a certain extent, I am sure that I?d behave the same way that I do presently. There are exceptions to that. For instance if I were six foot five and one hundred and ninety pounds, I?d most likely be in the NBA and be really rich. I think if I was really rich and in the NBA I wouldn?t have the same worries that I have today. Even if before I were in the NBA I would have lots of attention and have a lot more confidence. So to an extent I would change a little if my genetic make-up were different. In a sense, genetic make-up is just a competitor to the environmental factors

The patient reported that he had never felt comfortable in his own skin and was exclusively attracted to females (Bradley, S.J., Oliver, G. D., Chernick, A. B,, & Zucker, K. J., 1998). This case study displays that genetic factors have a higher effect on gender identity than modeling or parental rearing. Despite the social and environmental factors rearing her to be a girl he always showed his masculinity. This study is interesting and should also be included in transsexual studies.

From Dr. Money’s perspective, raising Bruce as a girl would allow him to live a “normal” life, if he were to live his life without a penis, he would be seen as an outsider and rejected from society. He also suggested to put Bruce on estrogen, but also surgically give him a cosmetic vagina. Dr. Money explained to Ron and Janet that Bruce/Brenda, would psychologically mature as a woman, and be attracted to men, as well as be able to have sexual intecourse, without a problem. According to Bruce’s parents, there was no reason “that it shouldn’t work” (50). However, they could have thought it out thoroughly, what if Brenda didn’t feel comfortable in her own skin? Would she feel as though something is wrong with her? This is where the topic of

In this study, they are used several type of method, one of the technique is used two or more test instrument to ensure the adequate coverage, for example the participants were given a battery of personality and mental ability tests, interest and value inventories and psychomotor tests. In addition, separate of examiners administer the IQ test, life history interview, psychiatric interview and sexual life history interview. The twin also complete questionnaire independently under the constant supervision of the staff members. Twin studies are valuable to researchers because identical twins share 100% of their genes and fraternal twins share, on average, 50% of their genes. Both identical and fraternal twins share certain aspects of their environment (e.g. religious practices in the home). This allows researchers to estimate the heritability of certain traits. Participants are asked about academic ability, personality, and interests; family and social relationships; mental and physical health; physiological measurements. Of interest to researchers are prevalence of psychopathology, substance

However, just like David’s case, Liam would have been defiant to Dr. Money’s theory that the environment overrules biology. Liam’s characteristics and events agree to his nature of opposition. For an example, when he went to the Mall as Luna she displayed a great amount of courage and defiance to embrace her. In like manner she would of rebelled against Dr. Money’s absurd requests. To assert, an event in David’s life when Dr. Money highly requested David and his family to start the sexual reassignment surgery on David, which would of allowed Dr. Money’s theory to be successful. David refused to get the surgery, as David knew whom his body identified as, a male. Colapinto writes, “Today David explains that his refusal to undergo vaginal surgery

Nature vs. nurture has been discussed by philosophers in the past and by scientists more recently. Philosophers such as Plato argued that all knowledge was inherited from your parents and when you were told something you didn’t learn it you were just reminded of it. Aristotle however argued that all humans were born with a blank slate and built on it with influence from there environment. In the 1700’s the empiricists and the internalists took over the argument. They fought through letters explaining there point of views and denouncing the others. This leads to Pavlov coming up with the idea of behaviorism in the early 1900‘s. Behaviorism became the new wave of Psychology and influenced a lean towards the nurture side. It was not

Another study that has been done was with separated twins. Each twin was raised in a completely different environment than the other. Genetically, they were both identical in every way, but the environment that they were raised in was very different. One twin was raised in a very hostile setting and slowly became violent as an adult while the other twin was

Scientists and psychologists everywhere study twins. The argument most commonly studied is nature versus nurture. The focus of this essay, however, is whether or not to separate twins in schools. Some believe the separation is demeaning and traumatic to the twins. The side about to be proved however that is this separation is a necessary step in the individualization of twins. Often, separation sparks the path to individualization.