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Predictably Irrational, Revised and Expanded Edition: The Hidden Forces That Shape Our Decisions Paperback – 1 May 2010

4.3 out of 5 stars 201 customer reviews

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Product details

  • Paperback: 384 pages
  • Publisher: Harper Perennial; Revised and Expanded ed. edition (1 May 2010)
  • Language: English
  • ISBN-10: 0061353248
  • ISBN-13: 978-0061353246
  • Product Dimensions: 13.5 x 2.2 x 20.3 cm
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (201 customer reviews)
  • Amazon Bestsellers Rank: 115,822 in Books (See Top 100 in Books)

Product Description

Review

"A taxonomy of financial folly." -- The New Yorker

"Predictably Irrational is clever, playful,humorous, hard hitting, insightful, and consistently fun and exciting to read." -- Paul Slovic, Founder and President, Decision Research

A taxonomy of financial folly. --The New Yorker

"A taxonomy of financial folly."--The New Yorker

"A marvelous book that is both thought provoking and highly entertaining, ranging from the power of placebos to the pleasures of Pepsi. Ariely unmasks the subtle but powerful tricks that our minds play on us, and shows us how we can prevent being fooled."--Jerome Groopman, New York Times bestselling author of How Doctors Think

"Predictably Irrational is an important book. Full of valuable and entertaining insights that will make an impact on your business, professional, and personal life."--Jack M Greenberg, Chairman, Western Union Company, Retired Chairman and CEO, McDonald's Corporation

"Ariely's book addresses some weighty issues . . . with an unexpected dash of humor."--Entertainment Weekly

"The most difficult part of investing is managing your emotions. Dan explains why that is so challenging for all of us, and how recognizing your built-in biases can help you avoid common mistakes."--Charles Schwab, Chairman and CEO, The Charles Schwab Corporation

"This is a wonderful, eye-opening book. Deep, readable, and providing refreshing evidence that there are domains and situations in which material incentives work in unexpected ways. We humans are humans, with qualities that can be destroyed by the introduction of economic gains. A must read!"--Nassim Nicholas Taleb, New York Times bestselling author of The Black Swan: The Impact of the Highly Improbable

"A delightfully brilliant guide to our irrationality--and how to overcome it--in the marketplace and everyplace."--Geoffrey Moore, author of Crossing the Chasm and Dealing with Darwin

"Dan Ariely's ingenious experiments explore deeply how our economic behavior is influenced by irrational forces and social norms. In a charmingly informal style that makes it accessible to a wide audience, PREDICTABLY IRRATIONAL provides a standing criticism to the explanatory power of rational egotistic choice."--Kenneth Arrow, Nobel Prize in Economics 1972, Professor of Economics Stanford University

"PREDICTABLY IRRATIONAL is a charmer-filled with clever experiments, engaging ideas, and delightful anecdotes. Dan Ariely is a wise and amusing guide to the foibles, errors, and bloopers of everyday decision-making."--Daniel Gilbert, Professor of Psychology, Harvard University and author of Stumbling on Happiness

"In creative ways, author Dan Ariely puts rationality to the test. . . . New experiments and optimistic ideas tumble out of him, like water from a fountain."--Boston Globe

"Predictably Irrational is clever, playful, humorous, hard hitting, insightful, and consistently fun and exciting to read."--Paul Slovic, Founder and President, Decision Research

"PREDICTABLY IRRATIONAL is a scientific but imminently readable and decidedly insightful look into why we do what we do every day...and why, even though we 'know better, ' we may never change."--Wenda Harris Millard, President, Media, Martha Stewart Living Omnimedia

"Freakonomics held that people respond to incentives, perhaps in undesirable ways, but always rationally. Dan Ariely shows you how people are deeply irrational, and predictably so."--Chip Heath, Co-Author, Made to Stick, Professor, Stanford Graduate School of Business

"Dan Ariely is a genius at understanding human behavior: no economist does a better job of uncovering and explaining the hidden reasons for the weird ways we act, in the marketplace and out. PREDICTABLY IRRATIONAL will reshape the way you see the world, and yourself, for good."--James Surowiecki, author of The Wisdom of Crowds

"An entertaining tour of the many ways people act against their best interests, drawing on Ariely's own ingeniously designed experiments. . . . Personal and accessible."--BusinessWeek

"Surprisingly entertaining. . . . Easy to read. . . . Ariely's book makes economics and the strange happenings of the human mind fun."--USA Today

"Inventive. . . . An accessible account. . . . Ariely is a more than capable storyteller . . . If only more researchers could write like this, the world would be a better place."--Financial Times

"After reading this book, you will understand the decisions you make in an entirely new way."--Nicholas Negroponte, founder of MIT's Media Lab and founder and chairman of the One Laptop per Child non-profit association

"Ariely's intelligent, exuberant style and thought-provoking arguments make for a fascinating, eye-opening read."--Publishers Weekly

"PREDICTABLY IRRATIONAL is wildly original. It shows why--much more often than we usually care to admit--humans make foolish, and sometimes disastrous, mistakes. Ariely not only gives us a great read; he also makes us much wiser."--George Akerlof, Nobel Laureate in Economics, 2001 Koshland Professor of Economics, University of California at Berkeley

"A fascinating romp through the science of decision-making that unmasks the ways that emotions, social norms, expectations, and context lead us astray."--Time magazine

"Sly and lucid. . . . Predictably Irrational is a far more revolutionary book than its unthreatening manner lets on."--New York Times Book Review

This is a wonderful, eye-opening book. Deep, readable, and providing refreshing evidence that there are domains and situations in which material incentives work in unexpected ways. We humans are humans, with qualities that can be destroyed by the introduction of economic gains. A must read! --Nassim Nicholas Taleb, New York Times bestselling author of The Black Swan: The Impact of the Highly Improbable"

Sly and lucid. . . . Predictably Irrational is a far more revolutionary book than its unthreatening manner lets on. --New York Times Book Review"

Surprisingly entertaining. . . . Easy to read. . . . Ariely s book makes economics and the strange happenings of the human mind fun. --USA Today"

A fascinating romp through the science of decision-making that unmasks the ways that emotions, social norms, expectations, and context lead us astray. --Time magazine"

In creative ways, author Dan Ariely puts rationality to the test. . . . New experiments and optimistic ideas tumble out of him, like water from a fountain. --Boston Globe"

An entertaining tour of the many ways people act against their best interests, drawing on Ariely s own ingeniously designed experiments. . . . Personal and accessible. --BusinessWeek"

Ariely s book addresses some weighty issues . . . with an unexpected dash of humor. --Entertainment Weekly"

Inventive. . . . An accessible account. . . . Ariely is a more than capable storyteller . . . If only more researchers could write like this, the world would be a better place. --Financial Times"

Ariely s intelligent, exuberant style and thought-provoking arguments make for a fascinating, eye-opening read. --Publishers Weekly"

A taxonomy of financial folly. --The New Yorker"

A marvelous book that is both thought provoking and highly entertaining, ranging from the power of placebos to the pleasures of Pepsi. Ariely unmasks the subtle but powerful tricks that our minds play on us, and shows us how we can prevent being fooled. --Jerome Groopman, New York Times bestselling author of How Doctors Think"

Dan Ariely is a genius at understanding human behavior: no economist does a better job of uncovering and explaining the hidden reasons for the weird ways we act, in the marketplace and out. PREDICTABLY IRRATIONAL will reshape the way you see the world, and yourself, for good. --James Surowiecki, author of The Wisdom of Crowds"

PREDICTABLY IRRATIONAL is a charmer-filled with clever experiments, engaging ideas, and delightful anecdotes. Dan Ariely is a wise and amusing guide to the foibles, errors, and bloopers of everyday decision-making. --Daniel Gilbert, Professor of Psychology, Harvard University and author of Stumbling on Happiness"

The most difficult part of investing is managing your emotions. Dan explains why that is so challenging for all of us, and how recognizing your built-in biases can help you avoid common mistakes. --Charles Schwab, Chairman and CEO, The Charles Schwab Corporation"

Dan Ariely s ingenious experiments explore deeply how our economic behavior is influenced by irrational forces and social norms. In a charmingly informal style that makes it accessible to a wide audience, PREDICTABLY IRRATIONAL provides a standing criticism to the explanatory power of rational egotistic choice. --Kenneth Arrow, Nobel Prize in Economics 1972, Professor of Economics Stanford University"

After reading this book, you will understand the decisions you make in an entirely new way. --Nicholas Negroponte, founder of MIT's Media Lab and founder and chairman of the One Laptop per Child non-profit association"

PREDICTABLY IRRATIONAL is a scientific but imminently readable and decidedly insightful look into why we do what we do every day...and why, even though we know better, we may never change. --Wenda Harris Millard, President, Media, Martha Stewart Living Omnimedia"

Predictably Irrational is an important book. Full of valuable and entertaining insights that will make an impact on your business, professional, and personal life. --Jack M Greenberg, Chairman, Western Union Company, Retired Chairman and CEO, McDonald's Corporation"

Predictably Irrational is clever, playful, humorous, hard hitting, insightful, and consistently fun and exciting to read. --Paul Slovic, Founder and President, Decision Research"

Freakonomics held that people respond to incentives, perhaps in undesirable ways, but always rationally. Dan Ariely shows you how people are deeply irrational, and predictably so. --Chip Heath, Co-Author, Made to Stick, Professor, Stanford Graduate School of Business"

PREDICTABLY IRRATIONAL is wildly original. It shows why much more often than we usually care to admit humans make foolish, and sometimes disastrous, mistakes. Ariely not only gives us a great read; he also makes us much wiser. --George Akerlof, Nobel Laureate in Economics, 2001 Koshland Professor of Economics, University of California at Berkeley"

A delightfully brilliant guide to our irrationality and how to overcome it in the marketplace and everyplace. --Geoffrey Moore, author of Crossing the Chasm and Dealing with Darwin"

From the Inside Flap

If the behaviours that skew our judgements were random or senseless, we'd be hard put to sort them out and make better decisions. But as the research described in this book shows, our irrationalities are, in fact, systematic. People will make the same types of mistakes over and over, in a predictive manner, because the causes of these behaviours are embedded in the very structure of our minds. This is why recognizing these mistakes and understanding them offers us a way to do better.

And that's the aim of this book: to leave the reader with new knowledge of human nature derived from a wide range of scientific experiments and findings, knowledge that will help all of us make better decisions in our personal life, our business life, and in the choices we all need to make about our collective welfare. --This text refers to an out of print or unavailable edition of this title.

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Customer Reviews

Top Customer Reviews

Format: Paperback
This book is a very enjoyable and interesting read - but I have now read Kahneman's Thinking Fast and Slow.

Here's the quick comparison:

- Ariely's book is pure pop science. Short, entertaining, 1st person, occasionally irritating anecdotal style, but you quickly get the message. However, if you're reading it now (2012), you may have already heard the same thing elsewhere.
Personal view: I found it too anecdotal, and too lightweight.

- Kahneman's book is the real deal. This is the bible of behavioural economics. Everything you need to know, written with clarity and detail, but also enough stories, short exercises and counterintuitive conclusions to keep you turning the pages.
Personal view: Long and challenging, but very rich and rewarding.
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Format: Hardcover Vine Customer Review of Free Product ( What's this? )
This is really a popular psychology book about how we behave and how, as the subtitle puts it, hidden forces influence our everyday decisions. So don't be put off by quotes from businessmen and economists in the blurb. I almost was. But I'm glad I wasn't. This is a neat little book with plenty of nuggets of information and insights that you can put to use immediately. You learn things about yourself and other people that seem so obvious you wonder how you'd never noticed them before and you learn why hunches you've had in the past really are right. Each chapter of this book consists of some simple experiments that are designed to probe a different aspect of our decision-making process e.g. how our expectations affect how we experience things and why too many choices can be unhelpful, to mention just two. The experiments are simple and elegant.

They usually consist of asking two or more differently informed groups of students questions about something. Actually, sometimes the author is a bit vague about the exact experimental conditions, how bias was eliminated from the experiment (particularly with respect to how questions were framed [what language was used] and how the participants were chosen [a few samples were decidedly small]) and how the many variables were isolated and controlled. So in that sense we must take Ariely's word for it. Also, he often vaguely summarises the results of these experiments with words such as "more than" and "most" instead of giving figures. If he were giving a lecture I would have asked him to clarify quite a few points. But all in all I think that this was an interesting book albeit a short one. It is a slim volume and the typeface is quite large. I'm a slow reader and I read it comfortably over two days.
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Format: Hardcover
I bought this having seen Dan Ariely speak at LSE recently. He was an engaging speaker and his research sounded interesting.

Having read the book I was left a bit underwhelmed, because I found that I was already familar with both some of the research and a number of the concepts, and was tempted to give it 3 stars. However on reflection that's probably a bit unfair. This is actually a good book for people interested in learning about the field of behavioural economics. It's nicely written with a chatty style, and some of Ariely's research is very interesting.

Just a few snapshots to give you an idea of what this book covers. He looked at subscription packages for The Economist and found that and obviously bad deal led people to choose an option that was like it but obviously better (because it gave them a way to measure the options). In contrast when there were two options that were different but hard to compare they tended to just go for the cheap option.

In a maths test where subjects were given a cash reward based on the number of problems solved and were given an opportunity to cheat, he found that asking them to recall the Ten Commandments ahead of the test appeared to make them less likely to be dishonest.

And in taste tests people prefer Pepsi to Coke when tasting blind, but prefer Coke to Pepsi when they know in advance when they know what they are going to drink. This suggests that we prime ourselves to enjoy something we expect to enjoy.

If this all sounds 'obvious' to you, to some extent you are right (although there are many examples in this field that are counterintuitive).
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Format: Hardcover Vine Customer Review of Free Product ( What's this? )
The field of behavioural economics is a fascinating one, which has already brought us the wonderful 'Freakonomics'. By comparison to that book this one suffers somewhat, because:

(1) There is an unremitting US-centricity here. All the examples and experiments are about typically US topics, all the conclusions are spelled out in a US context.

(2) The findings are often used as a launching point for some thoroughly unscientific moralising about how society ought to act differently.

(3) The experiments all seem rather narrow in scope. None is repeated and all seem to run on a rather small scale. It seems that as soon as one experiment throws light on a curious behaviour, it is time to move on to the next. I suspect the writers of 'Freakonomics' might have found more data to explore more fully aspects of the behaviour each time.

I was also annoyed by several chapters containing an appendix which appears right after the chapter, rather than all residing at the end.

On the plus side, Ariely writes engagingly and describes the experiments with a fair amount of humour. I paricularly enjoyed his descriptions of the experiment testing the effect of arousal on judgment.
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