A preference assessment is a method for finding items or activities a learner is likely to work for, so they can be used as reinforcers.
Example
The RBT presents pairs of toys and records which one the learner picks each time, then ranks the toys by how often they were chosen.
Key points
- Single-stimulus: one item is presented at a time.
- Paired-choice: two items are presented and the learner chooses one.
- Multiple-stimulus without replacement: several items are presented, and each chosen item is removed before the next choice.
- Free operant: the learner has access to items and the observer records engagement.
Exam tip
Preferences can change, so assessments are repeated. Follow the protocol and report any signs of distress.
Common mistake
Assuming a learner’s favorite item stays the same. Preferences change, so reassess regularly and do not rely on a single check.
Quick check
If a learner never approaches an item in a choice array, is it likely a strong reinforcer? Unlikely.
Keep studying
RBT glossary · Motivating operation · Token economy · ABC data · Flashcards · Study guide
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