Thickness of Brain's Cortex Linked to IQ

by Dr. Enozia Vakil on  March 12, 2014 at 7:28 PM Research News   - G J E 4
The rate of change of thickness of one's brain's cortex could be important in determining the IQ, a new study found.
 Thickness of Brain's Cortex Linked to IQ
Thickness of Brain's Cortex Linked to IQ

The study has potentially wide-ranging implications for the pedagogical world and for judicial cases in which the defendant's IQ score could play a role in determining the severity of the sentence.

Dr. Sherif Karama, assistant professor of psychiatry at McGill University, psychiatrist at Douglas Mental Health University Institute and affiliate at The Neuro, said that often, small differences in IQ scores are observed when people's IQs are tested twice over a period of time. However, in some instances, dramatic changes in IQ scores are observed.

He said that these dramatic changes are generally attributed to measurement errors rather than assumed to reflect real changes in general cognitive ability.

This study by Professor Karama and his colleagues involved 188 children and adolescents over a period of two years. MRIs of the study participants were taken at six sites across the US. They found that within a relatively short period of 2 years:

1. People with a significant increase in IQ did not have the expected cortical thinning,

2. People whose IQ stayed the same had the normal expected cortical thinning,

3. People with a significant decrease in IQ had exaggerated cortical thinning.

This paper has been published in the journal NeuroImage.

Source: ANI

Post your Comments

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
User Avatar
* Your comment can be maximum of 2500 characters
Notify me when reply is posted I agree to the terms and conditions

You May Also Like

View All