Laws of UX: the psychological principles behind usable interfaces

Laws of UX is a collection of principles and psychological effects designers can draw on when building interfaces, presented on lawsofux.com.

A few key examples

Hick’s law: decision time grows with the number and complexity of choices. Fitts’s law: the time to reach a target depends on its distance and size. Jakob’s law: users spend most of their time on other sites, so they expect yours to work like the ones they already know.

Using them well

These laws are tools for explanation and direction, not formulas that guarantee results. Combine them with user research and testing when making design decisions.