Scientists Develop AI System to Predict IQ From Brain Scans

Saturday, June 30, 2018 - 15:02

Scientists from California Institute of Technology, Cedars-Sinai Medical Center and the University of Salerno in the US, have developed an artificial intelligence system that can tell how smart a person is just by looking at a scan of the individual's brain.

Researchers from California Institute of Technology, Cedars-Sinai Medical Center and the University of Salerno in the US show that their new computing tool can predict a person's intelligence from functional magnetic resonance imaging (fMRI) scans of their resting state brain activity, Daily Mail reports.

"We found if we just have people lie in the scanner and do nothing while we measure the pattern of activity in their brain, we can use the data to predict their intelligence," said Ralph Adolphs from Caltech.

To train their algorithm on the complex patterns of activity in the human brain, researchers fed the brain scans and intelligence scores from almost 900 individuals into their algorithm, and set it to work.

After processing the data, the algorithm was able to predict intelligence at statistically significant levels across these 900 subjects, said Julien Dubois, a postdoctoral fellow at Cedars-Sinai Medical Center.

The study was conducted as part of an ongoing quest to build a diagnostic tool that can tell a great deal about a person's mind from their brain scans.

"Functional MRI has not yet delivered on its promise as a diagnostic tool. We and many others are actively working to change this. The availability of large datasets that can be mined by scientists around the world is making this possible," said Dubois.

Intelligence was chosen as one of the first test beds for the technology because research has shown that it is very stable over time. That is, a person's IQ score will not vary much over a period of weeks, months, or years.

The researchers also conducted a parallel study, using the same test population and approach that attempted to predict personality traits from fMRI brain scans.

The personality test they used divides personality into five scales: Openness to experience, Conscientiousness, Extraversion, Agreeableness and Neuroticism.

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