The effectiveness of the peak relational training system and corresponding changes on the VB‐MAPP for young adults with autism

The current investigation sought to extend prior research evaluating the use of the PEAK Relational Training System as a comprehensive treatment model in improving language skills demonstrated by individuals with autism. Baseline PEAK‐Direct Training and Verbal Behavior Milestone Assessment and Placement Program (VB‐MAPP) assessments were conducted across 3 adult male participants, and scores on the PEAK‐Direct Training assessment were used to select targets for intervention. Language instruction guided by the PEAK‐Direct Training module was implemented for 45 to 69 days across participants. Results suggest that participants mastered target skills throughout the training phase, and VB‐MAPP test probes showed an increasing trend. Follow‐up probes suggested that scores on the VB‐MAPP maintained when training was discontinued. In addition, participants demonstrated an increase in assessment scores on the PEAK‐Direct Training assessment in the follow‐up phase, including the mastery of untargeted verbal skills.