Introduction:
A very important element in the development of the nervous system is sensory integration, i.e. organizing and interpreting sensory stimuli and using processed information in a deliberate action. Disruption of the processes of sensory integration at any stage of its formation may result in dysfunctions in the development of complex motor functions as well as self-regulation of behaviour and concentration of cognitive attention.

Aim of the research:
To investigate the coexistence and correlation between regulation disorders of sensory processes (RDSP) in school-age children.

Material and methods:
The study was conducted on a group of 104 children aged 6–15 years using a standardized sensorimotor questionnaire completed by their parents or legal guardians in compliance with all the principles consistent with Good Clinical Practice. Then, the correlation between the occurrence of individual RDSPs was analysed.

Results:
Correlation analysis showed that many RDSPs are statistically significantly correlated with each other, which is also confirmed in other publications. A special relationship has been demonstrated between individual RDSPs and disturbances in motor coordination and disturbances in cognitive attention and behaviour (self-control).

Conclusions:
The study, by showing significant correlations between individual RDSPs, may contribute to better control over the neurodevelopment of children and adolescents, as well as helping to support their psychomotor development through psychologists, physiotherapists, or educators, as well as by parents/guardians. Correlations between RDSP and impaired coordination skills and cognitive functions indicate the integrity of the nervous system and the links between the motor and mental spheres that are important for a child’s development.