Scientific American
Searching for intelligence in our genes.

Some scientists today are trying to find intelligence in genes. They have purposely tested twins to see if their scores were different. In their studies they have always been close. Unfortunately everytime they believed they had found a certain gene, they ended up being wrong, even after gaining more advanced machines to look at more specific genes. They tried mapping out the genetic markers in children that did well in testing and did not, but they could not find anything. The scientists then noticed that the cortex of the brain would change shape differently depending on the intelligence of the child. It would constantly grow large and then small, depending on age. They did notice the changes were the same in twins so they're were some genetics involved.
They discovered that white matter in the cortex was found more frequently in intelligent people. They determined white controlled the speed of the brain and the gray matter provided processing power. They began to believe that scanning the brain with magnetic resonance imaging to determine intelligence better than an SAT test. Though many scientists did not wish to risk that.
However finging a specific gene for intelligence proved to be difficult. They began to believe there were many genes controlling different parts of intelligence. They soon realized that twins that were in different enviroments, such as a poor and rich family had a different intelligence. Therefore the enviroment also effected the intelligence genes. They became active in a thinking enviroment. They have not found the genes for intelligence yet but they will continue studying to perhaps in the future, detect learning disabilities, so the children can have that problem fixed from the beginning. In the end it will always be a problem scientists to wonder about.

My Review,
I found this article very informing and thought provoking. The writer was able to explain the story of these studies very well and used quotes of the scientist to help the reader better understand what was happening. The writer was able to write in a way so that people who didn't completely understand the science behind it still understand what was happening. Most people wouldn't have too much trouble understanding this article which can be helpful for those who might become interested in science if they just had an understandable way to read it. It was also thought provoking by giving the reader the true importance of this study, perhaps to bring inspiration to any future scientists. It was an altogether good article both intelligent and an easy read.

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