Which term describes a drill where multiple elements of a pattern may be prompted and still maintain coherence?

• A. Variable substitution drill
• B. Imitation drill
• C. Substitution drill
• D. Chain drill

Answer: (A)

The idea being tested is keeping a patterned response coherent even when you prompt multiple parts of that pattern. In a variable substitution drill, you can vary more than one element of a template across different trials, and the learner still produces the same overall structure correctly. This builds flexibility and generalization because the learner learns that the same pattern applies even as different pieces are prompted.

For example, use a simple template like “I see a [color] [object].” In one trial you prompt the color and the learner says “I see a red ball.” In another trial you prompt the object and the learner says the same structure with a different object, “I see a red ball.” In a third trial you prompt both elements and the learner still responds with the full, coherent pattern, “I see a red ball.” The emphasis is on the pattern remaining intact despite variations in the prompted elements.

This is different from drills that focus on a single element or on chaining elements together, because here the key is the ability to substitute multiple parts of the pattern while keeping the overall response coherent.