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Intellectual

How memory works

A full read

Memory is not a recording

Many people picture memory like a camera.

You see a thing. Your brain saves the film. Later you press play. That is not how it works. Your brain saves a few real pieces. It rebuilds the rest each time you remember.

reconstruction
Building a memory again from a few saved pieces, plus guesses that fill the gaps.

Here is one dinner, remembered on two days.

Before / After

Tap to see the same dinner remembered twice.

We sat by the window. The soup was warm. A friend told a long story.

Same night. The window grew. A dog appeared. The brain filled the gaps with what fit.

Sources

  • Ebbinghaus (1885), Memory: A Contribution to Experimental Psychology
  • Atkinson & Shiffrin (1968), Human memory: A proposed system
  • Baddeley & Hitch (1974), Working memory
  • Craik & Lockhart (1972), Levels of processing
  • Tulving (1972), Episodic and semantic memory
  • Bartlett (1932), Remembering
  • Loftus & Palmer (1974), Reconstruction of automobile destruction
  • Roediger & Karpicke (2006), Test-enhanced learning
  • McGaugh (2000), Memory — a century of consolidation
  • Schacter (2001), The Seven Sins of Memory