In the least-to-most hierarchy, what type of prompt is used first?

In the least-to-most prompting hierarchy, the first type of prompt used is the model prompt. This approach is structured so that the intervention begins with the least intrusive prompt and gradually increases in intrusiveness if necessary. A model prompt involves demonstrating the desired behavior for the individual, allowing them to observe how to perform the task without direct assistance. This serves as an effective method for individuals to learn through imitation and can foster independence while minimizing dependence on more direct forms of prompting.

The reason this strategy is employed is to give the learner an opportunity to engage with the task through observation, potentially increasing their comfort level and understanding before introducing more intrusive prompts. This method respects the learner's autonomy and encourages their active participation, making it an essential part of effective teaching and behavior modification strategies. The purpose of starting with a model prompt is to cultivate the learner’s ability to replicate the behavior based on observation, which can lead to greater retention and skill development.