Using Programmed Schedules of Reinforcement to Increase the Variability of Reinforcer Delivery in Classroom Assistant-Implemented Variable-Ratio Schedules
A pocket-sized VR cheat-sheet lets classroom staff hand out tokens with lab-level precision.
01Research in Context
What this study did
Littin et al. (2025) gave classroom assistants a small card. The card listed when to give tokens on a variable-ratio schedule.
The researchers watched three assistants work with students. They used a multiple-baseline design across the adults.
What they found
When the card was in view, assistants hit the VR target more often. They also mixed the timing of tokens better.
The simple printed guide made staff behavior more accurate and more variable at the same time.
How this fits with other research
Delamater et al. (1986) showed that VR schedules act like VI schedules with feedback. The card in Littin's study gives that feedback, so the old math still holds.
Allen et al. (2016) coached teachers in a mixed-reality room. Both studies push staff fidelity up, but Littin's tool costs pennies and needs no headset.
Hu et al. (2020) compared computer vs teacher delivery. Littin flips the idea: the computer is a paper card, and the human still delivers the tokens.
Why it matters
You can print the VR card tonight and hand it to any aide. No long training, no apps, no cost. If you run token boards in class, try adding a small cue sheet that lists the next five VR numbers. Watch how fast accuracy jumps.
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02At a glance
03Original abstract
Variable-ratio (VR) schedules of reinforcement can lead to steady response rates and make behavior less resistant to extinction but can be difficult to implement with fidelity. Utilizing a concurrent multiple baseline design across participants, we sought to determine how classroom assistant (CA) delivery of VR schedules followed mean and variability requirements and evaluated the effects of programmed schedules of reinforcement on the implementation of VR schedules. Results suggest that the use of programmed schedules of reinforcement led CAs to increase the variability of reinforcer delivery and remain closer to the desired mean. Programmed schedules of reinforcement increase the variability in classroom assistant-implemented VR schedules. Programmed schedules of reinforcement assist classroom assistants in remaining close to the intended mean of the VR schedule. Programmed schedules of reinforcement are cost-effective and easy to provide for classroom assistants in the classroom. The descriptive statistic range can be used to characterize the variability of reinforcement schedules.
Behavior Analysis in Practice, 2025 · doi:10.1007/s40617-024-00963-9