Psychometric studies are one of the priority tasks of child psychoneurology. It makes important to update the technologies for objective control of the mental sphere of children. Obtaining quantitative characteristics of indicators of the mental activity in pediatric practice, is a convenient tool in assessing the level of development of a child’s cognitive and psychophysiological functions, both in normal conditions and in the presence of somatic and/or neurological diseases. The computer psychophysiological complex (CPPC) “Psychomat”, developed at the Research Institute of Medical Technology seems to be most widely used in children’s practice among a number of developed psychophysiological complexes. At present, an original software package created on the base of «Psychomat» allows receiving the results of the study in automatic mode (online), which is a convenient tool for mass testing in children’s institutions. The development of such software packages opens up new possibilities for psychometric research.