(via Dan Ariely: Are we in control of our own decisions? | Video on TED.com)

Behavioral economist Dan Ariely, the author of Predictably Irrational, uses classic visual illusions and his own counterintuitive (and sometimes shocking) research findings to show how we’re not as rational as we think when we make decisions.

See also images from this talk in 6 Proven Ways to Boost the Conversion Rates of Your Call-to-Action Buttons