Dan Ariely's three New York Times bestselling books on his groundbreaking behavioral economics research, Predictably Irrational, The Upside of Irrationality, and The (Honest) Truth About Dishonesty, are now available for the first time in a single volume. This ebook has been optimised for reading on colour screens. The majority of the text will appear the same across all devices, but there is one exercise that will not work unless viewed on a colour screen.