8. People Can Miss Changes in Their Visual Fields

Watch This Video:

• The Monkey Business Illusion (Embed)
• Caption: https://www.youtube.com/watch?v=IGQmdoK_ZfY

Did You See the Gorilla?

• This video is an example of change blindness or inattention blindness.
• People commonly miss big changes in their visual fields.
• Eye-Tracking - A technology that lets you view and record what a person is looking at, what order they see it, and how long they look.
• When eye-tracking is used on the "Gorilla Video", everyone sees the gorilla, but only about 50% of people are aware of it.

Conclusion

• Don't assume people will see things on your web page just because it is there.
• If you want to be certain that someone sees something on your web page add something like a visual or auditory cue.
• Eye-tracking data is helpful but not always completely correct - use with caution.