Hick's Law
Hick's Law states that the time it takes to make a decision increases with the number and complexity of choices available.
Named after psychologists William Edmund Hick and Ray Hyman, it proves that giving users too many options at once causes cognitive overload and decision paralysis. Good interfaces break complex decisions into smaller sequential steps.
How it works
Reaction time grows logarithmically as the number of options increases. Sorting options into clear logical categories cuts down the mental search time, but reducing raw option count remains the most effective fix.
When to use it
Use it when designing navigation menus, product pricing tables, user onboarding flows, and multi-step checkout processes to prevent drop-off.
Common mistakes
Presenting all available product features on a single dashboard screen instead of using progressive disclosure to show advanced options only when needed.
Key takeaways
- More choices lead directly to slower decision times and higher abandonment.
- Progressive disclosure keeps initial screens clean while preserving depth.
- Categorizing long lists helps users mentally rule out irrelevant options faster.
Learn this
Lessons and exercises mapped to this concept.
Common questions
- Does Hick's Law mean every interface should only offer three choices?
- No. It means you should minimize unnecessary choices and group complex sets into structured, bite-sized steps rather than dumping everything onto one screen.