Which drill is specifically about replacing one element at a time in a pattern with prompts?

• A. Substitution drill
• B. Chain drill
• C. Visual aids
• D. Genre

Answer: (A)

This item tests substitution drills in therapy, where one element of a pattern is replaced at a time using prompts. The idea is to keep the overall pattern the same while gradually swapping in the correct item, cueing the learner as needed and then fading the prompts as they gain independence. For example, if you’re practicing a sentence frame like “The boy is ___,” you repeatedly substitute the missing verb, one element at a time, with prompts guiding the correct form while the rest of the frame stays constant. This approach builds flexibility within a stable structure and helps the learner learn to produce the target pattern with step-by-step support. The other methods described involve different strategies: one builds responses in a linked sequence, rather than altering a single element within a fixed pattern; visual aids rely on pictures or visual supports rather than a pattern-changing drill; genre refers to a style or category of discourse rather than a drill technique.