Data represent the multiple-baseline case study results of the behavioral intervention effectiveness in children with severe multiple developmental disorders. The psycho-educational intervention was based on the use of augmentative and alternative communication tablet app "PECS IV+". The app is devoted to the mastering of the functional communication skills by children with low level of the verbal communication.
Presented following registered parameters in three participants:
- mands (non-verbal request behavior);
- problem-type behavior;
