Developmental changes in the mechanisms of image classification in young schoolchildren with different cognitive styles

Testing of 7- to 8- and 9- to 10-year-old children with the matching familiar figures test revealed groups of children differing in the time and accuracy of the reaction of choice from several alternatives. Classification of simple images and images with additional information congruous with the main discriminative character improved with age in children without evident signs of reflectivity or impulsivity (the main group) and in reflective children. No significant improvement was revealed in impulsive children. Developmental changes in the event-related potentials during image classification differed in character and location in children with different styles of cognitive activity. In the children of the main group and in the reflective children, the developmental changes consisted of an increase in the amplitude of the late positive complex predominantly in the caudal areas of both brain hemispheres. In the impulsive children, in the age period from 7–8 to 9–10 years, the late negative component N350 became more distinct, especially in the left hemisphere, and substantial reorganization of the involvement of the frontal areas in the classification process took place. The opposite electrophysiological changes in children with different cognitive styles testify to different developmental changes in the mechanisms of visual recognition.Translated from Fiziologiya Cheloveka, Vol. 31, No. 1, 2005, pp. 15–23.Original Russian Text Copyright © 2005 by Beteleva, Petrenko.