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Otago, New Zealand - The man whose job is quite simple and requires little thought actually tend to lower IQ (Intelligence Quotient). So that IQ does not go down, it is advisable to do not be lazy to think and do not give up if you find a job are complicated.
Many people think that IQ is a genetic trait, but the results showed a person's IQ can be increased or decreased over the years.
IQ can be increased gradually or quickly, after at least perform cognitive training for a few weeks. The increase in IQ because this training is usually not immediately understood by someone. But if the cognitive training is abandoned then may fade after a few months.
Studies that have been conducted for 30 years at the National Institute of Mental Health found people whose work involves complex relationships, setting up a complicated system or deal with difficult people or issues, it tends to show the results of an IQ test better over time.
By contrast, tests on a number of people whose work is quite simple and requires little thought actually tend to lower IQ. The results of these studies have been published in 1999 in Psychology and Aging.
"When researchers at the University of Hamburg who underwent intensive training in 20 young adults during the first month. The researchers found an increase in gray matter were appropriate in the brain within 7 days after training starts. Material gray shrink when training is stopped," said researchers as reported from FoxNewsHealth.
The results of the study have been published in 2008 in PLoS One.
IQ tests do not measure abilities such as creativity, common sense or social sensitivity. IQ tests only assess different types of knowledge and abilities, including abstract reasoning skills.
Increasing the value in abstract reasoning is the main reason the average IQ scores have increased by about 3 points per decade since the 1930s, based on a study by James Flynn, a professor emeritus of political studies at the University of Otago, New Zealand.
In recent studies, as many as 33 students in the UK are given IQ tests and brain scans at the age of 12-16 years and were followed up after about four years later by researchers from the Wellcome Trust Centre for Neuroimaging at University College London. About 9 percent of students showed a significant change of 15 points or more in the value of IQ.
"On a scale where a value of 90-110 are considered average, a student IQ rose 21 points from 107 into 128. This means that the students have raised from 68 to 97 percentile compared to other students of the same age. However, the value of other students decreased from 114 into a 96. Changes in a person's IQ score is often discussed as a result of measurement error or subjects tested was having a bad day. But MRI in this study showed that there was a change in the gray matter regions in accordance with fluctuations in the children's skills ren, "said Cathy Price, a professor of cognitive neuroscience that have been published in Nature.
Despite the small sample size, but this study attracted widespread attention because it can show how changes in IQ scores may be reflected in the actual shift in the structure of the brain.
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