Perception du mouvement et QI

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Message par chaman_cyclant Mar 17 Sep 2013 - 19:27

IQ scores are predicted by individual differences in sensory discriminations
High IQ is associated with motion perception impairments as stimulus size increases
The results link intelligence and low-level suppression of sensory information
Suppressive processes are a key constraint of both intelligence and perception


Early psychologists, including Galton, Cattell, and Spearman, proposed that intelligence and simple sensory discriminations are constrained by common neural processes, predicting a close link between them [1,2]. However, strong supporting evidence for this hypothesis remains elusive. Although people with higher intelligence quotients (IQs) are quicker at processing sensory stimuli [1,2,3,4,5], these broadly replicated findings explain a relatively modest proportion of variance in IQ. Processing speed alone is, arguably, a poor match for the information processing demands on the neural system. Our brains operate on overwhelming amounts of information [6,7], and thus their efficiency is fundamentally constrained by an ability to suppress irrelevant information [8,9,10,11,12,13,14,15,16,17,18,19,20,21]. Here, we show that individual variability in a simple visual discrimination task that reflects both processing speed and perceptual suppression [22] strongly correlates with IQ. High-IQ individuals, although quick at perceiving small moving objects, exhibit disproportionately large impairments in perceiving motion as stimulus size increases. These findings link intelligence with low-level sensory suppression of large moving patterns—background-like stimuli that are ecologically less relevant [22,23,24,25]. We conjecture that the ability to suppress irrelevant and rapidly process relevant information fundamentally constrains both sensory discriminations and intelligence, providing an information-processing basis for the observed link.
Un petit test :

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Date d'inscription : 23/01/2011
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Perception du mouvement et QI Empty Re: Perception du mouvement et QI

Message par sylveno Mar 17 Sep 2013 - 20:05

ah tu vu le fil "Réflexion sur la liste des traits définissant la douance" ?

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Date d'inscription : 16/07/2013
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Localisation : à la campagne et à la ville

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