The present study used a multiple probe across behaviors design, with an embedded alternating treatments design to compare the effects of two modified communication systems, the Picture Exchange Communication System (PECS) and a speech generating device, on requesting for a child with multiple disabilities, including autism and visual impairments.…

Joint attention is developmental skill that is typically acquired through visual input during the first year of life in typically developing children. Children with visual impairments develop joint attention through alternate senses such as tactile and auditory input (Baron-Cohen, 1995) and show joint attention behaviors unlike those of typically…