RBT · Behavior Acquisition · 6 min read
Stimulus and Response Prompts
- Distinguish between response prompts and stimulus prompts and identify common examples of each type.
- Explain prompting hierarchies and fading procedures, including most-to-least, least-to-most, errorless teaching, and time delay.
- Describe the role of the Registered Behavior Technician in implementing written prompting protocols, recording prompt data, and preventing prompt dependency.
Introduction to Prompts and Stimulus Control
In behavioral instruction, a prompt is an antecedent cue or change to an instructional stimulus that helps evoke a correct response; the RBT presents it as specified in the written teaching plan. When a learner is first acquiring a target behavior, the natural discriminative stimulus alone might not reliably evoke the response. Prompts provide instructional support while a learner acquires a skill; depending on the written procedure, they may be delivered before an error or after the learner has an opportunity to respond.
The ultimate goal of prompting is to transfer stimulus control from the prompt to the natural discriminative stimulus. Stimulus control has transferred successfully when the learner responds accurately and independently to the natural cue in their environment without needing extra assistance. When the written goal is independent responding, the RBT fades teaching prompts according to the plan; needed accommodations and communication supports are not automatically removed.
Providing instructional assistance requires a respectful approach. Person-centered prompting respects the learner’s dignity and uses the least intrusive effective assistance specified in the written plan. Technicians support the client by following the prescribed support level so that the individual is neither under-supported nor subjected to unnecessary assistance.
Common mistakes
- Treating gestural prompts as stimulus prompts: Pointing to or tapping an item is a gestural response prompt because it directs attention through technician behavior, whereas moving the target item itself is a movement stimulus prompt.
- Altering prompt hierarchies independently: Registered Behavior Technicians implement the written prompt hierarchy designed by the BCBA or BCaBA; they must not change the hierarchy or select new prompt levels on their own when a learner struggles.
- Fading prompts at an incorrect pace: Fading prompts too slowly can cause prompt dependency where the learner waits for cues, while fading too quickly can cause frustration and repeated errors.
- Failing to record prompt levels accurately: Omitting data on whether a response was independent or prompted, or failing to document the specific prompt level required by the protocol, prevents the supervisor from tracking the transfer of stimulus control.
Key points
- A prompt is an antecedent cue or change to an instructional stimulus that helps evoke a correct response; teaching prompts are faded according to the written plan.
- The ultimate goal of prompting is to transfer stimulus control from the prompt to the natural discriminative stimulus.
- Response prompts act directly on the learner's behavior (verbal, model, gestural, physical), whereas stimulus prompts act directly on instructional materials or the environment (positional, movement, visual).
- Physical guidance is the most intrusive response prompt, with prompt intrusiveness describing the overall degree of assistance provided.
- Most-to-least prompting is commonly prescribed for novel skills to minimize mistakes, while least-to-most prompting is often used for skills with emerging proficiency.
- When implemented and faded according to the written plan, procedures such as errorless teaching and time delay can help transfer stimulus control and reduce the risk of prompt dependency.
- Registered Behavior Technicians implement the supervisor's written prompting hierarchy without designing or changing it, record independent and prompted data accurately, and report consistent errors or prompt waiting to their supervisor.
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