ENDaiva Levitienė and Jautrė Šinkūnienė claim in their article that rightly selected and adapted auxiliary communication closely linked with the forecasts of the child's possibilities of talking carries great importance in teaching autistic children with severe speech and communication disorders to communicate with the surrounding world. Teaching to communicate in symbols not only encourages language perception and amplification of passive vocabulary but also stimulates speaking. Teaching to communicate with the help of additional means of communication (things, photographs, pictures, symbols) and nonverbal ways of communication (look, touch, gestures) is based on the principles of organization, picturesqueness, perspicuity and consistency. The process of education takes place in stages and is long-lasting. The main aim of the development of communicational abilities in autistic children is to develop communication skills, knowledge and competences that would be needed and applicable in independent life.