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Home Health Mind & Brain

Intelligence linked to ability of ignoring distractions

by Mihai Andrei
May 24, 2013
in Mind & Brain
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People with higher IQ have a much better ability to ignore background distractions, because they are just much better at filtering out useless information.

Artificial.intelligence

Now personally, I’m not a big fan at defining intelligence, especially using the IQ type of tests, and even less any results that are demonstrated starting from here. Reality has shown us that IQ is a not a good way of showing who is intelligent and who is not, but this is still an interesting, relevant study.

The study group was asked to take a standardized test, and then watch short video clips of black and white bars moving across a computer screen. While some videos were small and filled only the centre of the screen, others filled the entire screen. The participants’ only task was to identify in which direction the bars wil start moving – right or left.

The results showed that people with higher IQ scores were faster at noticing the movement of the bars when observing the smallest image – but they were slower at detecting movement in the larger images. These apparently vague results were very clear to study leader Michael Melnick of the University of Rochester:

“From previous research, we expected that all participants would be worse at detecting the movement of large images, but high IQ individuals were much, much worse.

As authors explain, in most cases, background movement is much less important than small moving objects in the foreground, like for example driving a car. As a person’s IQ increases, so does his (or her) ability to filter out distracting background motion and concentrate on the foreground. But the ability to ignore background movements is not the only indicator of “intelligence”.

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Background-motion-blur

“But since this task is so simple and so closely linked to IQ, it may give us clues about what makes a brain more efficient, and, consequently, more intelligent. “We know from prior research which parts of the brain are involved in visual suppression of background motion.

“This new link to intelligence provides a good target for looking at what is different about the neural processing, what’s different about the neurochemistry, what’s different about the neurotransmitters of people with different IQs.”

Via BBC.

Tags: intelligence quotientiq

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