Predictably Irrational, Revised and Expanded Edition: The Hidden Forces That Shape Our Decisions
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Why do our headaches persist after we take a one-cent aspirin but disappear when we take a fifty-cent aspirin? Why do we splurge on a lavish meal but cut coupons to save twenty-five cents on a can of soup?When it comes to making decisions in our lives, we think we're making smart, rational choices. But are we?In this newly revised and expanded edition of the groundbreaking New York Times bestseller, Dan Ariely refutes the common assumption that we behave in fundamentally rational ways. From drinking coffee to losing weight, from buying a car to choosing a romantic partner, we consistently overpay, underestimate, and procrastinate. Yet these misguided behaviors are neither random nor senseless. They're systematic and predictable—making us predictably irrational. Read more
Publisher : Harper Perennial
Publication date : April 27, 2010
Edition : Revised and Expanded ed.
Language : English
Print length : 384 pages
ISBN-10 : 0061353248
ISBN-13 : 46
Item Weight : 2.31 pounds
Reading age : 18 years and up
Dimensions : 5.31 x 0.86 x 8 inches
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Top Amazon Reviews
"Predictably Irrational: The Hidden Forces That Shape Our Decisions" by Ariely Ariely (PI), was an interesting read, and deserves to be looked at by economist, psychologist, marketer, or just people looking to improve their selves alike. It follows the trend, set by Freakonomics, by Steven Levitt and Stephen Dubner, in discussion of esoteric economic concepts, but without the academese that tends to keep casual readers away. I found myself personally engrossed while reading this novel due to the parallels of irrational behavior I discovered I also exhibited and will be actively correcting. The following three I believe have sentimental value to me and I feel are genuinely worth discussing. Zero cost irrationality as described by PI is the concept that reviews the large bias humans show towards "free." I put free in quotations as I am using the term loosely in this context as often the decision chosen is not without cost, and in relative terms, it is often not the option that held the most value per unit of the exchanging intermediary item. In fact, just a few hours before writing this brief review, I purchased three Publix cloth shopping bags that I had no intention of purchasing beforehand, but because they were buy three get one free. I can say in earnest, without that free offer, I would have completely shrugged off the Publix bag, to purchase at another time. A potential solution to this problem, derived from a specific example he mentions within the chapter, is to mentally give the "free" item a price, even one as low as one penny. This, surprisingly, nullifies the zero cost irrationality for most individuals, allowing for proper cost-benefit analysis of the additional item or offer. Procrastination, or the giving up of long-term goals for immediate gratification, this desire for immediate satisfaction permeates particularly strongly throughout American culture. The effect of this national procrastination can be seen by abhorrently low national saving rate, or more implicitly or healthcare system that is more reactive than proactive. Though I personally am not a pure procrastinator, in fact many would consider me an extrovert, I believe that there quite a bit I still put off that I do so exactly because I fail to properly evaluate the opportunity cost of the long term benefit of said action. For example, I did a quick back of an envelope calculation of me putting of my savings to next year, rather than not starting when I begun work two years ago. This three wait has cost me over half a million dollars (Assumptions: Roth IRA, with locked six percent APR, maturing in fifty years). I have begun taking Ariely's advice, and setting hard deadlines for many things, such as this particular book review which I gave myself exactly the day after completing the book to complete, no exceptions and no excuses. The final personal irrationality I've found plaguing my decision making has been that of `keeping doors open,' or not being able to stand the idea of closing our alternative options. My irrational in my context, has to do with maybe not a plethora of options, as emphasized within the book, but rather when I am down to two options that have to deal with something within the social sphere. Case in point, I would fret over the decision of whether I should continue to chase after a girl or letting her go, or going to a party where I would probably feel uncomfortable or not, though these examples may seem simple to an someone else, I struggled with these decisions constantly. Often than not, I found myself unable to take the choice that errs on the side of negative (deciding to stay home, or leave the girl alone) as I felt doing so eliminates a multitude of options without producing any new ones of benefit. I am curious to whether how much confidence has to do with the exact experiment presented within the book. I speculate if participants were required to self select as confident, or perhaps anchored to think of confidence, if such decisions become easier. I wonder this, since many my such decision-making gridlocks underlie a lack of self confidence, perhaps those with more of it at the time of the test may change results. In sum, Ariely's solution, as I interpret it, the cure for procrastination is really premised by self-confidence, where one sets long term goals and bravely commits to them. The book discussed around 14 irrationalities in total across 13 chapters, each holding a slight new scope of human cognizance to gain. The three above mentioned irrationalities after a deep introspective look, I felt held the most personal utility. I genuinely I have a new lens to the world. I genuinely believe that holds the potential to enrich the perspective of most readers as well, no matter their relative amount of academic background on the subject.
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Reviewed in the United States on February 27, 2010 by Charles A.
This was a fun book to read. It has been a while since I took any economics courses, and I forgot how much of economic theory is based on the assumption that humans are rational beings, always acting in their best interests. Dan Ariely does a marvelous job of shooting holes through that assumption. === The Good Stuff === * The book is really an overview of behavioral economics- the study of how supposedly rational people make decisions. Ariely recounts numerous experiments in which people are given a challenge and react in ways which would seem to be exactly opposite of their self-interest. As an example, if you allow people the chance to buy $1 chocolate bars for 10 cents, they will purchase quite a few. But if you offer then 90 cent chocolates for free, they will only take one or two. If experiments like this interest you, you will enjoy the book. * In each case, Ariely describes a simple experiment, and provides a theory as to what he thinks happened. I have no idea how many of his theories are considered valid, or would stand up to peer review. But for a quick read to just amuse yourself with human nature, the explanations suffice. * Ariely picks a nice assortment of topics-everything from placebos to "irrational" pricing and honestly and ethics. The experiments are clever and "fun", although I doubt they would stand up to serious scientific scrutiny. Still, they were fun to read, and I will probably try some of them on my friends. === The Not So Good Stuff === * While Ariely writes well, he is not the most engaging author you will read. The text comes across a little dry, and by the final chapters, I was ready for the book to end. * While the experiments, or at least their explanations were no doubt simplified for the book, in some cases they open more questions than they answer. Ariely offers one explanation and theory for the observed results, but makes no attempts to analyze deeper, or provide alternative explanations. * Without seeing more information, it is hard to tell if the experiments and their conclusions are statistically valid. In some cases it seems that they might not be, although given Ariely's background, it would seem he would know enough to assure the experiments validity. * Finally, there is no real theme or common thread through the work. Rather it is more like a series of short lab reports. The result is that the book can become tedious, and that it is tough to remember some of the results, as all the stories blur together. ===Summary=== While there were some problems, I did enjoy the book, and found the material fascinating. Some of the experiments product results that were quite unexpected, and with a little thinking you can use some of this information into whatever your business or trade you operate in. I'd recommend the book, with the caveat that the book has some flaws. Still, the positives outweigh the negatives.
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Reviewed in the United States on December 31, 2012 by Andy in Washington
Awsome work, the experiments were so revealing. Love bahaviour economics after going though this book. Looking forward to more.. .
Reviewed in the United States on September 11, 2024 by Alok Bhatnagar
I love entertainment that based on true stories however I found the book kind or boring, sorry to the writer. The show is very good.
Reviewed in the United States on October 23, 2024 by lois paul