
Individuals with autism spectrum disorder (ASD) have a need for things to stay the same, as demonstrated by their restricted patterns of behavior, interests, and activities. This module will define this core deficit area; describe and explain intense interests. routines and rituals, and repetitive motor behaviors; and give ways to use these patterns of behavior for positive change in persons with ASD.

According to the developers of PECS, it is a behaviorally based intervention that teaches the learner to use visual-graphic symbols to communicate with others (Bondy & Frost, 1994; Frost & Bondy, 2002). This module will provide information on this augmentative and alternative communication system.
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