100 Things You Should Know about People: #1– You Have “Inattention Blindness”

I’ve decided to start a series called 100 Things You Should Know about People. As in: 100 things you should know if you are going to design an effective and persuasive website, web application or software application. Or maybe just 100 things that everyone should know about humans!

The order that I’ll present these 100 things is going to be pretty random. So the fact that this first one is first doesn’t mean that’s it’s the most important.. just that it came to mind first.

I hope you enjoy this series. Make sure to let me know by posting comments.

So here’s #1 — Inattention Blindness

First let’s start with a little test for you to take. Watch the video below:

This is an example of what is called “inattention blindness” or “change blindness”. The idea is that people often miss large changes in their visual field. This has been shown in many experiments. Here is a description of an experiment that was recently conducted:

So what does this mean if you are designing a website or something on a computer screen? It means that you can’t assume that just because something is on the screen means that people see it. This is especially true when you refresh a screen and make one change on it. People may not realize they are even looking at a different screen. Remember, just because something happens in the visual field doesn’t mean that people are consciously aware of it.

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15 Responses to 100 Things You Should Know about People: #1– You Have “Inattention Blindness”
  1. Favorite Links: November 2009 « think + do
    November 24, 2009 | 11:21 am

    [...] 100 Things You Should Know about People: #1– You Have “Inattention Blindness” What Makes Them Click [...]

  2. Khoa
    July 27, 2010 | 8:51 pm

    I watched the bear movie before and still couldn’t believe that I missed that guy :-)

    Very interesting series. Thank you.

    Keep up with the good work.

    Khoa

  3. Leigh
    July 29, 2010 | 10:42 am

    Really?

    I couldn’t count the passes at all — but as soon as I saw that guy I was all, WTF is that?

    Maybe it’s because it’s my job to see things other people miss.

  4. Pradip Khekare
    September 2, 2010 | 4:45 pm

    I never thought of this…seems this is going to be very interesting series!!!

  5. Zaheen
    November 16, 2010 | 12:27 am

    Saw this on Copyblogger! I can’t wait to read the next 99!

    This website is going in my bookmarks. :-)
    Zaheen´s last [type] ..Why

  6. Guillaume
    November 29, 2010 | 11:42 am

    Just discovered this series of article. This is fascinating.

    Thank you.

  7. Nathan
    February 25, 2011 | 8:48 pm

    Got the count correct, missed the bear. Had to watch it again. I love this kind of stuff.

  8. Kevin Hughes
    April 14, 2011 | 7:22 am

    What a wonderful way to get people stoked about their minds and behavior! I did the first video a long time ago – except it was a gorilla suit that no one noticed. What fun. I think these short clips stimulate much more thought and discussion amongst folks just being introduced to new ideas. Great job! Loved it. Kevin

  9. PeanutButterJelly
    May 27, 2011 | 7:09 pm

    this is the best totally missed the bear! :)

  10. David Mizener
    June 1, 2011 | 2:17 pm

    Got both wrong. The bear and count.

  11. Inattention Blindness | Zen Raven
    June 20, 2011 | 12:26 am

    [...] following a chain of links while doing some research and I stumbled across an amazing article on inattentional blindness. I suggest you go check out the link before you read any [...]

  12. Kirsten
    July 17, 2011 | 6:23 pm

    I’m sure you’ve looked at this because seems an obvious question – any gender diff in who notices? Just interesting in video the people chosen

  13. Anthony Spence
    August 15, 2011 | 10:03 am

    Interesting series, cant believe he missed though, lol. Going to bookmark and check back for updates

  14. Phil
    October 17, 2011 | 2:20 am

    This is a brilliant post, really looking forward to the rest! I have seen the first video before, and I missed the bear too. I find it incredible that 75% don’t notice, that’s insanely high!

  15. César de la Fuente
    December 29, 2011 | 1:58 pm

    That’s unbelivable!

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