Usability Heuristics · heuristic
Recognition Rather Than Recall
Playable Play this law (~3 min)or keep reading below ↓
Nielsen's H6: minimise memory load by making objects, actions and options visible. Recognising something you see is far easier than recalling it from nothing — so show choices, don't demand codes; surface history, don't require re-entry; and never make users remember information from one screen to use on another.
Where it comes from
The supermarket, invented by Clarence Saunders' Piggly Wiggly in 1916, is recognition architecture: before it, you recited a shopping list to a clerk from memory; after it, you walked aisles and the shelves remembered for you. Sales exploded because seeing beats recalling. Multiple-choice exams exist for the same reason — and Nielsen's H6 is simply the shelf principle applied to screens.
Origin: Piggly Wiggly self-service shelves (1916)
In the wild
- Autocomplete everywhere
Search that suggests while you type converts an impossible recall task into an easy recognition one.
- 'Order again' with photos
Food apps show your history as pictures because nobody remembers restaurant names — but everyone recognises last Tuesday's biryani.
- Recently-used colours
Design tools pin your working palette because hex codes are for computers to remember.
Further reading
Don't just read it — feel it.
Play the 3-minute game and let your own reactions prove the law.
Play the lesson