Genetic Factors Linked To Only 24% Of Intelligence Changes

A new study published in the journal Nature  links 24% of our intelligence to genetic factors. That means 76% of our intelligence is determined by environmental factors.

Scientists found decades old intelligence tests done in 1940 on 11 year olds in Scotland and then retested the participants at age 65.

DNA from blood samples was collected from all 1940 people. An analysis of the genetic markers revealed various genetic similarities. Scientists compared these genetic similarities with the participants’ intelligence levels in both youth and old age.

Read more in the Wall Street Journal.

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