The problem of preserving and promoting the health of children in the North is urgent now. The schoolchildren are observed to have worse health, higher anxiety and deteriorated cognitive functions. Objective — to determine the impact of corrective measures on the indicators of childhood anxiety and attention function in junior schoolchildren. The investigation was conducted in 45 third-form pupils aged 9.23±0.1 years from a Magadan secondary school. A set of standardized methods, such as Multidimensional Anxiety Scale for Children (MASC), and a correction test were used. The investigators formed two groups: 1) 32 pupils with low and moderate anxiety; 2) 13 pupils with high anxiety and behavioral abnormalities, who underwent biofeedback self-regulation training using a BOSpulse trainer, and the so-called sandplay therapy. In the pupils of both groups, a diagnosis was made initially in February and subsequently in May. In group 2, corrective measures resulted in considerable improvements in attention function: the time required to execute a task decreased by 1.7 min (p<0.001), the median number of errors in the right and left halves of the table reduced by 2.0 and 1.0, respectively (p<0.05), the attention concentration increased by 3.0 conventional units (p<0.05). The analysis showed that the self-regulation skill in a child led to the formation of his/her attention, to the higher pace of the work done, and to its better quality. Upon completion of psychocorrection, the schoolchildren with high anxiety exhibited a substantial decrease in eight MASC domains: total anxiety; agemate relationship anxiety; public assessment-related anxiety; parent relationship anxiety; school success anxiety; personal expression anxiety; an anxiety-related decrease in psychic activity; and an anxiety-related increase in autonomic responsiveness.