Essay on Enviromental Effects on Behavior

During the procedure researchers desired to acquire as much information as accessible during the one-week visit. The testing consisted of 50 hours of four personality trait scales, three aptitude and occupational interests and two intelligence tests in which each twin had to fulfill. The researcher’s results show that genetic influences resemble to justify for most of the disparities in human characteristics. Bouchard and Lykken have come to the realization that genetic has a major impact on the characteristics of human and that it is no longer a deliberation. Instead ideas must be looked upon to advance. Our clarifications on fundamental views about skills, interest, parenting, education, abilities, and social behavior come from the viewpoint that individual’s knowledge and judgement shape their character and not the genes. Bouchard and Lykken will be the first to contradict with clarifications and propose their own suggestions. Genetic influence mainly drives intellect. These influences contain education, family setting and social class. Also, in Bouchard and Lykken’s findings are some genetic and environmental influence combinations that determine individual

The debate concerning the nature of the relationship between race and intelligence has been highly contested by psychologists for many years. With the emergence of genetic research in recent times, some clarity has been provided, however, many unanswered questions still remain. This essay discusses the implications of IQ test scores and the potentially misleading information they generate when administered to non-Western individuals. Although it is argued that race is a dynamic social construct and therefore not scientifically sound, this essay will explain why considering context-specific information about an individual is vital when assessing their intelligence due to the substantial roles environmental factors play in the learning

The issue of race and intelligence became prominent in the United States in the late 1960s (Rose 786). While some may argue that race correlates with the intelligence of a person, this paper will show that this is not the case and there are other factors that may determine one's intelligence. The measure of intelligence has many influences such as environment, social economics, biased standardized test, stereotypes, and genetics. These factors will be examined throughout this paper along with providing insight on how standardized tests may be biased toward different races.

His findings have concluded that environmental factors explains 58 percent of IQ variations around the world. If IQ tests were able to compare different backgrounds of different races, it would be more apparent. An American clinical psychologist Terrie Moffitt, said that negative environments (low social status or ineffective parenting) could affect a child 's intelligence even more (Parker/Morton 1). There is a way to make a child smarter and that starts from an upbringing environment that is positive (Hurley). While bringing in the genetics of an individual based on their skin color, there are also different environmental factors that can contribute to the correlation between race and intelligence.

One of the main purposes of the eugenics movement was to attempt to control the level of intelligence in the human race. This is not completely possible, however, as all genes are linked to other genes, and intelligence is affected by many more than just the one gene (Agar, 2006). In contrast to Galton’s theory, intelligence is not actually completely hereditary. Between 47 and 58% of intelligence lies in DNA, and the rest is based on environmental factors (Steen, 1996). Many types of intelligence tests have been created to measure the level of intelligence in humans. Defining intelligence in itself is a difficult task, as there are

intelligence is determined by environment or genetics. The fact that human DNA is nearly identical across

Nisbett, R. E. (2004) Heredity, environment, and race differences in IQ: A commentary on Rushton and Jensen. Retrieved October 12, 2016 from, PsycINFO Database.

In IQ Study Finds Class Effect by Rick Weiss, he discusses why poor children, and especially black poor children, score lower on average than their middle-income and white counterparts on performance tests. Studies have repeatedly found that genes, not environment, explain most of the differences in IQ among individuals. However, a new study of the interaction among genes, environment and IQ finds that the influence of genes on intelligence is dependent on class.

Heritability is a statistical estimate of the proportion of the total variance in some trait that is attributable to genetic differences among individuals within a group. The question for the environment and intelligence is: What kinds of experiences hinder intellectual development and what kinds of environmental “nutrients” promote it? Some of the influences associated with reduced mental ability are: Poor prenatal care, malnutrition, exposure to toxins, and stressful family

One way to determine the extent to which genetic influences affect IQ is via twin studies, in these studies monozygotic twins (who share 100% genetic information) are compared with dizygotic twins (who share only 50% genetic information), in both sets of twins the environment is constant, as a result the only factor affecting IQ is the genetics shared, therefore allowing cause and effect to be established. (Tzaskowski 2014) conducted an experiment using 6702 pairs of twins to compare g scores and DNA markers, from the experiment is was found that twins estimated heritability’s increased from 0.35 to 0.48 from ages 7 – 12, this shows that there is a strong genetic link between heritability and IQ from childhood to adulthood.

The extent of nature and nurture on the development of the human brain has long been studied by neuroscientists and cognitive psychologists. Up to what degree does each variable play in each function of the brain? A group of psychologists recently conducted the largest correlational study looking for the relationship between socioeconomic status (SES) of a family and its effects on the brain morphology and behavior of the children raised in them. Socioeconomic disparities have been shown to have profound effect on the cognitive development of a child, but this study went beyond the behavioral effects to the anatomical effects of one’s SES. Similar studies have looked at the anatomical differences among various race/ethnic groups but no study has been done linking socioeconomic status-parental education and family income specifically. This was the first attempt to separate these two variable and look at their correlation with cognitive development.

The Minnesota twin study, Bouchard et al. (1990) was a longitudinal and cross cultural study to check the effect of heredity and environment on intelligence. This study was conducted on monozygotic and dizygotic twins separated from each other in infancy and reared apart. Approximately 50 hours of interviews and testing was done on each twin. For measuring intelligence, the WAIS test and the Raven test was used. The correlated IQ rates of the monozygotic twins reared apart were then compared to those that were reared together and dizygotic twins raised together to understand the result of heredity and environment on intelligence. This was useful as they shared similar genetic makeup but were exposed to different environmental conditions. Monozygotic

When it comes to cognitive capacity, it isn’t solely based on genes because of nonresistant variables like prenatal drug use, poor nutrition, environmental toxins, and other harmful external factors. These variables listed are more prevalent in low-income households. With households, where you live predetermines your destiny when it comes to an education. This is the reason why there is an unproportioned amount of poor kids in certain schools and rich kids with others. In his article, Joseph Burke states that, “…poverty greatly decreases the student’s learning ability, and public schools and teachers must become more creative at finding ways to mitigate the negative effects of poverty in the classroom.” This is not only true, but makes the

The debate of whether nature vs nurture can have an impact on intelligence is the question even every day people want to know. Many psychologists have long been looking for an answer. A lot of research has gone into this topic, studying different cultures, also strategies to learning from example Helen Nevilles sure start schemes, giving a child just a small amount of education at a young age. I selected varied sources but mostly from the internet to research case studies and I also used JSTOR to find the research papers and to consolidate the information I found.

While this assumption is accepted by a majority of geneticists and behavioral scientists, there is great disagreement on the degree of influence each contributes. Arguments for environmental influences are compelling; at the same time there is growing evidence that genetic influence on intelligence is significant and substantial (Eyesenck, 1998; Mackintosh, 1998; Plomin, 1994; Steen, 1996). The purpose of this paper is to explore the question: "How is intelligence influenced by heredity and environment?"