Which type of prompt hierarchy begins with the least intrusive prompt and increases prompting only as errors occur?

• A. Least-to-Most Prompting (LtM)
• B. Most-to-Least Prompting (MtL)
• C. Prompt Hierarchy
• D. Stimulus Fading Procedures

Answer: (A)

Starting with the least intrusive prompt and increasing prompting only after errors occur is the least-to-most prompting approach. The idea is to give the learner the chance to respond independently with the smallest amount of help first, and only provide more support if the response isn’t correct. If the learner makes an error, you escalate to a more supportive prompt and then gradually fade back as accuracy improves, keeping prompts at a minimum needed level. This structure helps build true independence over time because the learner isn’t kept at a high level of prompting after every correct response, and it supports learning by allowing correct responses to be produced with the least guidance necessary.