Aleksei M. Bukinich

Relevance. In the study, we discuss the neuropsychological measures and relationship of two important groups of cognitive functions, namely, executive functions and functions of activation regulation. The study of the structure of these functions and the possibility of assessing their state in children of preschool and primary school age by methods of neuropsychological diagnostics and computerized testing are important from two points of view. First, it is an important issue in neuropsychological practice. Second, it is one of the ways to better understand cognitive development at this age.

Objectives. Development and estimation of factor models that establish the relationship between the results of neuropsychological diagnostics and various groups of cognitive functions associated with executive functions and regulation of activation. Methods. 434 children from 6 to 9 years old (from senior preschoolers to third graders) participated in the study. All children underwent neuropsychological examination adapted for children of 6–9 years, and they also performed tests from a computerized neuropsychological examination battery for children of 6–9 years. The results were used to conduct a confirmatory factor analysis.

Results and conclusions. We proposed models that include three factors. The first factor corresponds to executive functions and two others relate to the regulation of activation. According to our model, the functions of activation can be divided into two factors: a factor of hyperactivity/impulsivity and a factor of fatigue/sluggishness. Model fit indices showed good agreement with empirical data. The combined use of indicators of both traditional and computer neuropsychological examination makes the estimations of the model better. Thus, in the study we revealed parameters of the performance on the neuropsychological tests that can be used as indicators of the state of executive functions and functions of activation regulation. The weakness in one of the components of activity regulation can lead to specific patterns of behavior which are manifested in the neuropsychological examination. A more serious and extensive deficit of one of the functions can lead to the appearance either of attention deficit hyperactivity disorder or of sluggish cognitive tempo.