The Effect of Enviroment on Intelligence :: essays research papers

In the ongoing debate about which instrument has more of an influence on human behavior and intelligence, certain methodologies view been used to determine this in several different studies. The genetic office is made up of additive and non-additive components. The surroundal component is separated into the make of a sh bed environment where both subjects used experience the uniform environment and a non-sh ared environment where the two subjects experience different environments. The studies that are used to determine the respective effects of genetics and environment are studies of how twins resemble each other, studies of adoption effects people compared to their relatives, and appellation of genes. Twin studies use monozygotic twins who share 100% of their genes and dizygous twins who are estimated to share 50% of their genes. Genetic identification tries to fall upon genes responsible for personality traits but is made difficult by the event that many behaviors ar e caused by multiple genes. Intelligence or IQ has been analyse extensively. It has been found that in childhood the correlation of IQ surrounded by twins is about .5. This correlation has also been found to increase with age. uniform results acquire been found in adoption studies indicating that environmental differences are non as much of a factor on IQ scores. In addition to IQ several other things have been studied to recuperate out if their cause is in the environment or genetics. Personality has been studied using the Big five traits that are commonly used to hear personality. Personality disorders have also been studied as well as occupational interests and beliefs and attitudes. For all of the heritability has been rated to be the majority of the cause. There has been a attraction of effort invested in finding specific genes that cause people to be a certain way however they have non been very successful.Studies have been conducted to determine the effects of shared environment on twins. Since they are known to have the same genes differences can only be attributed to environment and it has been found that twins raised in different environments do not necessarily have more in common with regard to personality. stock-still it has been found that shared environment does have an effect on cognitive ability and juvenile delinquency.While shared environment has not been shown to have a large effect non shared environmental factors have been shown to be a major source of variation.