Based on research from the field of Applied Behavior Analysis (ABA), the PECS™ protocol details a specific discrimination teaching strategy in Phase III. The PECS Phase III app is an invaluable tool that allows you to implement the teaching of Phase III of PECS™ and offers a novel approach to providing new opportunities for learners to practice discrimination techniques and strategies.
The app, designed to look just like a PECS™ communication book permits a teacher to practice picture discrimination with one or several learners within a single session. Touching the correct icon results in immediate visual and auditory feedback from the device in a manner far quicker than a teacher could react. If the learner touches an incorrect icon, there is no significant feedback. A correct picture selection results in access to a desire item or activity!
For teaching simple discrimination, the learner selects from an array involving the target picture versus a distracter picture. Both options allow you to move the pictures around on the page, between trials and to vary the number of pictures per trial from 2 to 12. A Correspondence Check™ can be tested by arranging two or more equally valued items and corresponding pictures with strategies from the Phase IIIB PECS™ protocol.