# Fitts's law

> English word · Proper noun

## Definitions
1. A predictive model of human movement primarily used in human-computer interaction and ergonomics, stating that the time required to move rapidly to a target area (for example, using a computer mouse) is a function of the ratio between the distance to the target and the width of the target.

## Etymology
Initially developed by Paul Fitts.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/fitts-s-law