---
title: Change blindness
date: "2007-01-02T12:00:00Z"
categories:
  - links
wp_id: 142
description: Watch a psychology experiment where a student asking for directions is swapped behind a passing door. Many subjects fail to notice the switch, demonstrating the powerful and counterintuitive phenomenon of change blindness.
keywords: [change blindness, psychology experiment, visual perception, selective attention, cognitive science, inattentional blindness]
---

A [cool psychology experiment](http://scienceblogs.com/mixingmemory/2006/12/coolest_experiment_ever.php). A student asks someone for directions. People carrying a door pass between them. Students switch. They check if the person giving directions has noticed that it's a different person. Many people don't notice the switch.