VIDBE-Q Volume 69 Issue 2
intervention. Two symbols are presented at a time on the display (APH All-in-one
Board) and the arrangement is changed (horizontally, vertically, or diagonally) for
each trial.
1. *CP physically guides the learner's hands to touch each symbol (again, be
mindful of quality of touch. Symbols should be named and shown from top
to bottom and left to right.) The learner gets brief access to each item.
2. *CP entices the child with referents simultaneously, using multisensory
cues.
3. The symbol is exchanged for the corresponding item.
4. CP provides social praise when the learner asks for the reinforcer and no
reaction when they ask for the distractor.
5. When the learner exchanges the symbol for the distractor item, a four-step
error correction procedure is used. The learner should reject the distractor
item, so the CP uses physical guidance to show them the symbol for the
highly preferred item, prompt them through the exchange, provide social
praise but not the item, distract the child from the task, then repeat the trial.
Phase 3B Procedures
Purpose: Learners are taught to discriminate between up to six tangible symbols
representing preferred items. Since we don't know which item the child truly
