- is designed to teach functional communication skills with an initial focus on spontaneous communication, is a method to teach young children or any individual with a communication impairment a way to communicate within a social context-The Six Phases of the Picture Exchange Communication System Are: PECS PHASE I: How to Communicate The child with autism learns to exchange single pictures for items or activities they really want.PECS PHASE II: Distance and Persistence Still using single pictures, the child with autism learn to generalize this new skill by using it in different places, with different people and across distances. They are also taught to be more persistent communicators.PECS PHASE III: Picture Discrimination The child with autism learns to select from two or more pictures to ask for their favorite things. These are placed in a communication book, a ring binder with Velcro strips where pictures are stored and easily removed for communication.PECS PHASE IV: Sentence StructureThe child with autism learns to construct simple sentences on a detachable sentence strip using an "I want" picture followed by a picture of the item being requested.PECS PHASE V: Answering Questions The child with autism learns to use PECS to answer the question, "What do you want?"PECS PHASE VI: Commenting Now the child with autism is taught to comment in response to questions such as, What do you see?, What do you hear? and What is it? They learn to make up sentences starting with I see, I hear, I feel, It is a, etc.
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