Apply overlearning most aggressively to motor and procedural skills

Physical and procedural sequences benefit more from overlearning than verbal recall does.

Why it works

Motor and procedural skills are stored in a different memory system (basal ganglia and cerebellum-based procedural memory) from verbal or declarative knowledge. Procedural memory is slower to build but more durable and more resistant to interference. Overlearning accelerates the consolidation of procedural traces, and once consolidated, these traces are exceptionally resistant to forgetting — which is why you never forget how to ride a bike.

How to do it

1. Separate the procedural elements of any skill (physical sequences, step-by-step procedures) from the declarative elements (facts, concepts).
2. Apply heavier overlearning to the procedural elements — they will benefit more.
3. Use spaced repetition for the declarative elements instead, since those decay faster regardless.
4. Track procedural performance separately from declarative knowledge so you allocate practice to each appropriately.

Evidence

The distinction between procedural and declarative memory systems is well established in cognitive neuroscience. Procedural memory’s greater resistance to forgetting is documented across motor learning research and amnesia studies. (observational)

The advantage of overlearning is consistently larger in motor and procedural tasks; for purely factual learning, spaced retrieval practice is typically more efficient than massed overlearning.

Sources

• Cohen & Squire (1980), preserved learning and retention of pattern-analyzing skill in amnesia, Science

Common mistake

Applying the same overlearning schedule to both a physical procedure and a set of facts, missing that the two respond very differently and have different optimal approaches.