predictably irrational

Mark got this book for Christmas, and after one look at inside the front cover I was sneakily reading it whenever he put it down (much to his annoyance...I kept losing his place). It is fascinating. Rather than explain it myself, here is a little synopsis from the book's website:

Do you know why we sometimes find ourselves excitedly buying things we don’t really need?
Do you know why we still have a headache after taking a five-cent aspirin, but why that same headache vanishes when the aspirin costs 50 cents?
Do you know why people who have been asked to recall the Ten Commandments tend to be more honest (at least immediately afterward) than those who haven’t? Or why honor codes actually do reduce dishonesty in the workplace?
By the end of this book, you’ll know the answers to these and many other questions that have implications for the way you look at the world. As a bonus you will also learn how much fun social science can be, and how to see more clearly the causes for our everyday behaviors, including the many cases in which we are predictably irrational.