Understand the idea
Fluent rereading can make material feel familiar without showing that it can be recalled or applied. A broad review rated practice testing and distributed practice highly across many learning conditions. [S22, S23] Retrieval practice means trying to bring information to mind; spacing distributes encounters over time. They are related but distinct. A well-designed learning loop combines an independent attempt, corrective feedback, and later retrieval rather than rewarding exposure alone.
Worked example
Read a short concept, close it, and explain its mechanism. Reopen it to locate a missing step. Attempt a different example tomorrow. Compare this with immediately recognizing the correct answer while the explanation remains on screen. This exercise illustrates a distinction; it is not proof of improvement in one person.
Where the idea stops
No single interval fits every goal. Retrieval alone cannot repair a misunderstood explanation without appropriate instruction and feedback; recognition tests can also be useful when designed well. [S22, S23]
Connect it
App design and science: why completion clicks cannot establish mastery.
Go deeper
What would you measure after a delay to distinguish familiarity from durable learning?
Sources
John Dunlosky, Katherine Rawson, Elizabeth Marsh, Mitchell Nathan, Daniel Willingham; APS · Research reference · Date: 2013-01-07
Research report landing page comparing learning techniques.
Link checked 2026-10-17 · APS overview accessed; linked journal PDF was blocked. Use S23 for the accessible institutional account of findings.Kent State University, Department of Psychological Sciences · Research reference · Date: 2013
Author institution account of the practice-testing and distributed-practice findings.
Link checked 2026-10-17 · Public webpage accessed; no specialist peer review of this brief.