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New evidence confirms link between IQ and brain cortex
Date:3/4/2014

e normal expected cortical thinning,
  • people with a significant decrease in IQ had exaggerated cortical thinning.

    "Finding that IQ is not fixed and correlates to changes in brain anatomy has important implications as it shows that some of the changes in IQ are real and not merely due to measurement error. This finding should make people wary of sticking to an early IQ assessment given the role it plays in school entrance criteria, detection of the gifted, as well as in eligibility for social security disability income or even the death penalty. In some US states, people with an IQ below 70 are not eligible for the death penalty."

    The reasons behind the changes in IQ are not clear at this point. Some of these may be due to programmed developmental trajectories or other factors such as nutrition and education, noted Professor Karama.


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  • Contact: Anita Kar
    anita.kar@mcgill.ca
    514-398-3376
    McGill University
    Source:Eurekalert

    Page: 1 2

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