Development of the System of Cognitive Functions in Right- and Left-Handed Boys Aged Six to Seven Years: A Study Taking into Consideration Specific Features of Early Ontogeny

摘要

Characteristics of early ontogeny and the formation of cognitive functions of left- and right-handed boys six to seven years of age have been studied with the genesis of handedness taken into account. A comparative analysis of cognition in right- and left-handed children has been performed using a unified approach to the history of early ontogeny with special emphasis on cognitive functions. The negative effect of pathological pregnancies and births, as well as disturbances in early ontogeny, on the development of cognitive functions in both left- and right-handed boys has been shown. The most "vulnerable" functions in right-handed boys with a history of various pathologies are the organization of activity and visuospatial perception; in left-handed boys, these are fine motor skills and speech development. In the absence of pathologies in the medical history, significantly higher indices of the organization of activity and visuomotor coordination have been found in right-handed boys and significantly higher indices of visuospatial perception, in left-handed boys.