AskEssays.com - Discover essay samples

Influences on environment and

4.9 of 5.0 (174 reviews)

Contains
400 words
Category
Other

Influences on environment and page 1
Influences on environment and page 2
Influences on environment and page 3
The above thumbnails are of reduced quality. To view the work in full quality, click download.

Influences on environment and


Intelligence



What are the influences of environment and heredity on measured intelligence?



HEREDITY



Psychologists are greatly divided over whether heredity or environment has a more dominant influence on individual intelligence.

Although some animal studies appear to suggest heredity have the greatest influence, a seemingly more accurate conclusion may be drawn form human studies on intelligence.

In studies on the similarities between IQ of siblings reared in the same and separate environments, the IQ of fraternal twins reared together showed greater similarity than the scores of ordinary siblings.

One may wonder why this is so! Parents tend to treat twins more alike than they do ordinary siblings. The influencing factor behind the increased resemblance in the twins IQ proves to be environmental.

Identical twins who are raised together show even greater similarities in their IQ, which is to be expected, considering their identical genes and the similar environmental influences they receive. When identical twins are raised apart the similarities in their IQ can be seen to decrease, however not by much. As the similarities are still impressive one may be lead to believe that heredity plays a major role in intelligence, but one must not overlook the fact that almost all separated twins are placed in homes socially and educationally similar to those of their biological parents. This tends to falsely increase the apparent effect of genes on intelligence, by making the separated twins IQ more alike.

Psychologists who place emphasis on environmental influence in regards to intelligence point out that in the cases where separated twins were placed in homes with significant educational and environmental differences to those of their birth parents, some twins IQ scores vary by as much as 20 points.

Other evidence, which seems to refute the influential importance of heredity on intelligence, comes from parents who raise both biological and adopted children. If genes greatly contribute to intelligence, the IQ of biological children and their parents should show greater similarities than the IQ of adopted children raised by the same parents. However, studies reveal that adopted and biological children reaised by the same mother resemble her in IQ to the same degree. The adopted children's genetic dissimilarities seem to make no difference.

ENVIRONMENTAL
<...

You are currently seeing 50% of this paper.

You're seeing 400 words of 800.

Keywords: influence on environment, impact on environment, effects on environment, effects on environment of air pollution, effects on environment of water pollution, influences on climate, impact on environment by human activities, effects on environment of deforestation

Similar essays


The fbi

Federal bureau investigation, the FBI, is considered the strongest police agency in the United States because it has control over other police agencies around the states. The FBI as a police agency has its pluses and minuses; therefore, looking for searching for serial killers and control other police agencies are some of its pluses. In the oth...

45 reviews
Download
Profile of a United Airlines C

Profile of A United Airlines Captain: Unfortunately, the publics' perception of the airline pilot is that of a glorified bus driver. The public has a vulgar lack of respect for the demanding responsibilities of the airline pilot. This lack of respect is due to an overall lack of knowledge of aviation on the part of the public. The follo...

141 reviews
Download
Filing for a Quick Divorce

Filing for divorce has become a simple and quick process with the release of self-help kits. In the past a simple divorce would cost an average of fifteen hundred to two thousand dollars and take about six months to complete. Now for a fraction of the cost and time you can file for a divorce without hiring an attorney. For thirty-five doll...

170 reviews
Download
Hume

on Miracles In explaining 's critique of the belief in miracles, we must first understand the definition of a miracle. The Webster Dictionary defines a miracle as: a supernatural event regarded as to define action, one of the acts worked by Christ which revealed his divinity an extremely remarkable achievement or event, an unexpected piec...

38 reviews
Download
What Is An American

?? ? This question can not be answered by one word. There are so many different characteristics, qualities, and features that can be used to describe an American. Besides features, someone is only a real American if they take advantage of all of the many privileges that are given to them. Any person that is not grateful for the privileges that...

160 reviews
Download
Atsisiųsti šį darbą