C.11.DUA:5.3 - Repair a study demand in an external report

A consultancy report says, “Do not introduce the revised teaching exercise until a large randomized study proves its effect.” The teaching team must choose materials for four sessions next month; that study would take two years. The present synthesis does not establish a causal learning effect. The team’s immediate question is whether the revised materials can meet the existing course requirements with less preparation.

For this illustrative comparison, both formats meet the content and participant-protection requirements, and no binding rule requires the proposed effect study for this bounded use. The remaining uncertainty is whether the revised materials run with the room’s existing tools. The team requires that readiness to be established before selecting them. A thirty-minute setup rehearsal by the instructor in that room can settle it; it creates no student exposure.

Use the team’s stipulated planning estimates: the current exercise requires ninety minutes of preparation per session; the revised materials require thirty if compatible, otherwise the team retains the current exercise. The same room and tools will serve all four sessions. The team regards compatibility and incompatibility as equally plausible and prefers less instructor preparation once the course and protection constraints are met. The rehearsal fits the available preparation window.

A successful rehearsal makes the revised materials available and saves four hours across the sessions; a failed rehearsal leaves the current exercise selected. With equal weights, the expected preparation saving is two hours before the rehearsal’s half-hour cost, or ninety minutes net. Retaining the current exercise uses no rehearsal time but forgoes that opportunity. These estimates warrant this rehearsal; its small size and reversibility alone would not.

Completed advice. “The present synthesis does not establish a causal learning benefit. Run the half-hour setup rehearsal to settle compatibility with this room’s tools. If the revised materials work, use them for the four sessions; otherwise retain the current exercise. Under our stated estimates, that information saves an expected ninety minutes of instructor time after its cost. Keep the learning-effect claim open.”

This completes the advice and the decision to probe; it does not report a performed rehearsal. Its result will determine the subsequent material choice. Compatibility feedback supports readiness in the stated room, not a causal learning-effect estimate or transfer to other conditions. If domain review finds unacceptable participant risk or a binding evidence prerequisite, the proposed use must satisfy that condition before it enters the available set.

Opposed cost condition. Suppose the same discriminating rehearsal now requires three hours of instructor time, still within the available preparation window. Its expected gross preparation saving remains two hours. The completed advice changes: “Retain the current exercise for these four sessions. The proposed rehearsal would cost an expected hour more than it saves. The current materials meet the course requirements; the comparative learning-effect claim remains unresolved.” A longer study remains a separate research proposal whose attainable contribution and burden must be justified for its own receiving use.