Special group psychology is one of the fields of developmental psychology that studies special conditions that arise mainly in childhood and adolescence under the influence of different sets of factors (organic or functional nature), which manifest themselves in a slowdown or a clear specificity of the psychological and social development of the child, which further complicates his social and psychological adaptation and inclusion in the educational field and the continuation of professional self-determination. The subject of special psychology as a science is a person who suffers from developmental disabilities, i.e. The subject of special psychology is the different forms and aspects of the development of the psyche in adverse circumstances.