What are different types of PECS?

PECS, or Picture Exchange Communication System, is a form of augmentative and alternative communication. It typically involves several phases, each designed to promote different communication skills. The types include basic PECS, where individuals learn to exchange pictures for desired items; advanced PECS, which focuses on constructing sentences; and social interaction PECS, aimed at encouraging spontaneous communication and engaging with others. Additionally, there are variations tailored for specific needs, such as PECS for children with autism or other developmental disorders.