Seconds or Minutes Later? Feedback Timing Matters Less Than You Think

Medical educators are obsessed with practice testing, and with good reason. Their term for it is test-enhanced learning, and the idea will feel familiar to anyone who runs weekly quizzes: the act of retrieving an answer strengthens learning. But one practical question had been nagging them. Should feedback come immediately after each question, or is it fine to wait until the end of a set?

What they did

Anna Ryan and colleagues at the University of Melbourne tested this with 41 second-year medical students. Each student sat an 18-question multiple-choice test. For half the items, feedback came straight after each question. For the other half, it came after a block of nine. Importantly, the feedback wasn't just "correct/incorrect". It was conceptually focused, explaining the underlying principles behind each problem.

Students then answered "near transfer" questions (same concept, superficially different details) and "far transfer" questions (same concept, substantially different scenario). They did this immediately and again one week later.

What they found

Feedback timing made no discernible difference. Immediate and delayed feedback were equally beneficial. Students found far transfer harder than near transfer, and getting the original question right predicted success on the follow-ups. The one practical edge for "immediate" was efficiency: students got through slightly more questions per hour (about 11.8 vs 11.2).

The authors' take-home message is that educators can choose feedback timing based on practical factors and put their energy into writing detailed, conceptually focused feedback. That matches their earlier work, which found that richer feedback beat simple right/wrong feedback.

The reality check: "delayed" here meant minutes (the end of a nine-question block), not days or weeks. The authors stress that timely feedback is still best practice and that long delays can add to student stress. The study was small and run in a single medical school. And the rise from about 50% to 69% is a before/after comparison with no no-feedback group, so it shows that testing plus feedback helped, not feedback alone.

Note that every item in this study got conceptual feedback, so it did not test kind of feedback against timing. The case for richer feedback comes from the authors' earlier study, and they say it remains to be seen whether timing matters for simple right/wrong feedback.