Of course, how people perceive color is highly depending on his/her cultural context. We need to learn it before deciding colors on your design. But this is still a good reference.

Having some struggle to color charts and graphs used in UI your designing? Using color palettes like Kuler is one thing, but we, UX practitioner, should be better than that. This article gives you a very quick and solid instruction based on human factors.

via PerceptualEdge

Compare to the visual stimuli, the auditory stimuli are usually much more subtle. But there are still beliefs that mp3 128kbps has terrible sound quality compare with 320kbps or raw wav file.Of course, technically (data-wise) it’s different thing.

But do you think it’s true that you can distinguish them? Well, you can try it out here. 

http://www.noiseaddicts.com/2009/03/mp3-sound-quality-test-128-320/

By the way, I could hear out the quality difference with my $15 Koss earphone.

Symantec did a very interesting social experiment. They left behind fifty smartphones on random sites in a city, and tracked the log how these smartphones were used by people who picked them up.

The result indicates 96% of people tried to access your personal information, 89% accessed personal app, 83% accessed business related app or files, and only 50% tried to return these phones to original owner even there was owner info.

Symantec suggested to have three things to avoid compromise:

1. Set password on your phone
2. Have app that can erase all data remotely
3. Install app that can remotely find the current coordinate of your phone


MY EYES!

Note: This is a static image.

Müller-Lyer illusion example

This is probably most comprehensive example of how Muller-Lyer illusion (Depth cue) works.

I usually don’t like figures that explains ux because they are mostly not useful. But this one is really good. 

Interesting article that is relevantly analyzing experience on Angry bird.

In summary, the author pointed out followings as factors that Angry Bird got popular:

  1. Fun, Simple, and engaging interface
  2. Response time management
  3. Good use on short term memory (STM)
  4. Conceptual depth
  5. Appropriate sound design
  6. Good visual design

Well written interesting article for sure.

Thanks petekp!

Another optical illusion.

If you look at a figure at the bottom after you stare at upper figures for seconds, a figure at the bottom looks like approaching.

Can anyone explain why this happens?