Change Blindness Experiment
Can you spot the difference between two almost identical images? Discover how attention affects what we perceive.
Frequently Asked Questions
Have another question? Let us know.
Why does change blindness occur?
Change blindness occurs because our visual system doesn't continuously process all details in a scene. Instead, we rely on attention to encode information, and changes to unattended elements often go unnoticed. A brief disruption (flicker, blink, cut) makes detection even harder.
What are real-world applications of change blindness research?
Understanding change blindness has implications for eyewitness testimony (witnesses may miss important changes), interface design (users may not notice important changes), driving safety (drivers may miss changes in traffic), and our understanding of visual consciousness.
How is change blindness different from inattentional blindness?
While both involve failing to perceive something, change blindness specifically involves failing to detect changes between two states, while inattentional blindness involves failing to notice an unexpected object or event altogether. Both reveal the limits of visual attention.
Show Details
What is Change Blindness?
Change blindness is a perceptual phenomenon where observers fail to notice changes in visual scenes, especially when the change occurs during a brief interruption like a blink, eye movement, or scene cut.
How It Works
This experiment presents pairs of images with subtle differences. A brief flicker or mask between images makes detection difficult, demonstrating the limitations of visual attention and memory.
Applications
Understanding change blindness has implications for eyewitness testimony, interface design, driving safety, and our understanding of visual consciousness.
References
- Simons, D. J., & Levin, D. T. (1998). Failure to detect changes to people during a real-world interaction. Psychonomic Bulletin & Review, 5(4), 644-649. 10.3758/BF03208840
- Rensink, R. A., O'Regan, J. K., & Clark, J. J. (1997). To see or not to see: The need for attention to perceive changes in scenes. Psychological Science, 8(5), 368-373. 10.1111/j.1467-9280.1997.tb00427.x
- Levin, D. T., & Simons, D. J. (1997). Failure to detect changes to attended objects in motion pictures. Psychonomic Bulletin & Review, 4(4), 501-506. 10.3758/BF03214339
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About This Experiment
This experiment is an educational adaptation for demonstration purposes. It is not a clinical diagnostic tool. Results reflect your performance in this specific session and should not be interpreted as an assessment of your cognitive abilities.
Data Privacy
Your experiment data is processed and stored locally in your browser. No data is uploaded to any server unless you explicitly export it.
