Predictably Irrational App for iPad and iPhone

June 5, 2013 BY danariely

Thanks for downloading the PI app — you’ve brought it up to the #2 spot in iTunes!!

If you’d like to give the app a review in the app store, I’d very much appreciate it.


Happy irrational birthday

June 1, 2013 BY danariely

Three years ago today was the publication date of “The Upside of Irrationality”

The book has 2 parts: the first is about motivation at work, and the other is about personal life (dating, happiness etc).  Interestingly, in the last year I am getting much more interest from companies to do field research related to both of these domains, and this is leading to some new exciting findings on the psychology of labor and on dating…..   More to come.

For now, Mazal Tov


In celebration of “A Beginner’s Guide to Irrational Behavior”

March 18, 2013 BY danariely

Today is the day that my free online class on coursera, A Beginner’s Guide to Irrational Behavior, opens to the public.

And in honor of this class, my three books will be available as an e-bundle at a discount ($19.99 for all three) until the day after the class starts, March 26th — but only until that date.

You can purchase the e-bundle through KindleNookiBookstoreKobo, or Google.

Irrational Bundle

And if you haven’t already signed up for A Beginner’s Guide to Irrational Behavior, it’s the perfect time to do it now! It’s not only FREE and open to everyone, but will surely keep you amused for the next six weeks.

Irrationally Yours,



November 27, 2007 BY danariely


November 27, 2007 BY danariely

Excerpted from Chapter 1 – The Truth About Relativity

Excerpted from Chapter 2 – The Fallacy of Supply and Demand

Excerpted from Chapter 4 – The Cost of Social Norms

Excerpted from Chapter 7 – The High Price of Ownership

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Chapter 8: “Keeping Doors Open”


November 16, 2007 BY danariely


Do you know why we so often promise ourselves to diet and exercise, only to have the thought vanish when the dessert cart rolls by?

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 your personal life, for your business life, and 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.