This article is aimed at the study of deviant behaviour in children with intellectual disabilities. It is well known that mental disability has a negative impact on the functioning of the emotional-volitional sphere and as a result facilitates the development of behavioural disorders. The lack of self-regulation, the underdevelopment of thinking manifested by the lack of criticism leads to the impossibility of choosing a correct model of relationship with those around us. This research issue is better studied in the psychology of personality, development and education. A theoretical study is shown, the research problem is argued, general and specific objectives are formulated, research tools are described and preliminary results as well as the theoretical-practical significance of the paper.