# Simon effect

> English word · Noun

## Definitions
1. The finding that reactions are usually faster and more accurate when the stimulus occurs in the same relative location as the response, even if the stimulus location is irrelevant to the task.

## Etymology
Named for J. R. Simon, who first published the effect in the late 1960s.

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