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When to Cram and When to Space

Informational · intermediate · for student learners

The problem this solves

Sometimes I need to learn something by tomorrow. What should I do?

Primary keyword: when to cram

What you'll learn

  1. What massed practice is good for
  2. What spaced practice is good for
  3. A decision rule for the day before an exam
  4. A two-week test-the-decision log

The science behind it: Massed Practice

Massed practice is single-minded, rapid-fire repetition of something in a single session: the classic 'practice-practice-practice' approach.

Why it matters

Massed practice feels productive because performance jumps quickly during the session, but those gains melt away once the session ends.

How to apply it

  • Recognise massed practice as a tool for last-minute warm-up, not as a learning strategy.
  • If you must cram, follow it within days with proper spaced review.
  • Resist the seductive feeling of fluency that massed practice produces.

Common mistakes

  • Believing that a long, single session equals thorough learning.
  • Confusing short-term performance with durable skill.
  • Choosing massed practice because it is more convenient to schedule.

Read the full concept: Massed Practice.

Where this fits

Part of module Recall and Practice.

More articles in this module