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Results

#1. Greg’s mother used a forward chaining procedure to teach him how to mop. During the initial teaching phase, to ensure early success and focus on later steps, the mop was always placed out, and the mop bucket was already filled by his mother before Greg began. Now that Greg has mastered the entire mopping sequence that was initially taught (from taking the mop to putting it away), his mother has stopped filling the mop bucket herself, requiring Greg to perform that step. What principle is Greg’s mother applying by no longer pre-filling the mop bucket and expecting Greg to do it?

Stimulus generalization.

Prompt fading for a pre-current behavior.

Introducing a new discriminative stimulus.

Teaching an omitted step of the chain.

In a behavioral chain all steps must eventually be performed independently by the learner to complete the task When Gregs mother initially taught the mopping sequence she consistently performed the fill the mop bucket step for him This means that step was omitted from Gregs direct instruction within the forward chain he was never taught to perform it himself Now that Greg has mastered the previously taught sequence his mother is introducing this omitted step making him responsible for its execution This strategy ensures the learner acquires all necessary components of the task moving towards full independence for the entire behavioral chain While it might involve elements of fading the mothers presence as a prompt the core action is the addition and instruction of a step that was previously done for the learner rather than fading a prompt that was explicitly given for Greg to perform that specific step

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