Researchers at the National institutes of health spoke about the dangers of depression and aggressive behavior for adolescents. According to experts, adolescent aggressiveness, one of the main reasons for the decline of level of intelligence.

The researchers analyzed data on three thousand young people under the age of 25 years. In the first stage, each subject underwent an IQ test and examination of the brain. In 25 years the study was repeated. Still needed to memorize a list of 15 words.

Best of all coped with the task volunteers with a calm nature. Especially important was the behavior in adolescence. Scientists conclude that aggression has no bearing on intelligence not only in childhood, but can be traced back to later years.

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