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In your book you write about our potential overreliance
on making decisions in relative, rather than
absolute, terms. Why can that lead us astray?
Many valuation disciplines investors use, like buying only below a certain
P/E ratio or when a discount to intrinsic value exceeds a certain amount,
help keep focus on absolute rather than relative value. What else might
work?
Explain the pitfalls of “anchoring” on a particular data point or experience,
to the exclusion of other inputs that might lead to better decisions.
Describe some of the work you’ve done on honesty and the rather
unfortunate results.
What conclusions do you draw from this?
One chapter in the book is titled, “The High Price of Ownership.” Describe
what you mean by that.
Tell us about any new projects you’re working on.
In concluding Predictably Irrational, you write that, “Although irrationality
is commonplace, it does not necessarily mean that we are helpless.” Any
final words on how to be less helpless?
Do you think the financial crisis has made the book more popular?
Recognizing the hidden forces that inappropriately influence
our decisions is the first step toward keeping those
influences at bay, says Duke behavioral economist Dan
Ariely. All of which, he adds, is easier said than done.
Having suffered third-degree burns over 70% of his body
after the explosion of a large magnesium flare used by the Israeli military, an 18-
year-old Dan Ariely endured years of painful rehabilitation in which, he says, “I
felt partially separated from society and as a consequence started to observe the
very activities that were once my daily routine as if I were an outsider.” Ariely
now applies his uniquely honed observational skills to the study of how people
make decisions, particularly on those influences to which
we are largely unaware. He last year assembled his
research findings into a highly readable and informative
book, Predictably Irrational. In the midst of a crisis set off
by rampant poor decision-making, we caught up recently
with Ariely for insight into how we might become a bit more
predictably rational.
Ariely’s book, Predictably Irrational, is available from the
link above.
It’s very hard with most decisions to come up with absolute answers, such as
how happy a particular activity will make us feel or how satisfactory the return on
a specific investment will be. As a result we’ve adopted an easier method: to
come up with comparisons so we can pick one thing over another. This isn’t
necessarily bad, but what we choose to compare with – or what is offered as a
comparison that we don’t even choose – can cause us to make a different
decision than we would otherwise.
One study I discussed in the book was based on an actual ad I saw for the
Economist. There were three offers in the ad: an Internet-only subscription for
$59, a print-only subscription for $125, and a combined print and Internet
subscription, also for $125. When I gave those options to students in a study,
16% chose the Internet-only subscription, none took the print-only subscription,
and 84% opted for the combined subscription. Sounds reasonable, right? But
what if I only offered them the Internet-only subscription for $59 and the
combined subscription for $125? Since I took out the option no one selected,
surely they’d react the same way, wouldn’t they? In fact, they didn’t. With only
two options, 68% of the students chose the Internet-only option and only 32%
took the combined offer. It’s not rational that in one case 84% were willing to pay
$125 for the joint subscription and in the second case 32% were, but that’s what
can happen when we make relative comparisons against the wrong things.
We do something similar when we look at what our neighbors and friends have in
order to judge how happy we are with what we have. At an extreme, it’s possible
to only care about relative value, which can cause problems. For example, male
sea lions care a lot about their weight, because the heavier sea lions get all the
females. They don’t care about being heavy, only heavier than the other male
sea lions. It turns out, though, that in this struggle to be bigger than the next sea
lion they’re becoming so obese that they die young from heart attacks. That’s a
decent analogy to what we’re seeing play out today: Many people may not have
really cared about how big their house or their TV or their refrigerator was, only
that they were bigger than the neighbors’.
Part of it is just recognizing all the relative-comparison traps and taking care to
control what you use to compare. Amos Tversky and Daniel Kahneman once did
a study in which they first asked people if they’d walk to another store 15 minutes
away to save $7 on a $25 pen. Most people said they’d do it. Then they asked if
they’d walk for 15 minutes to buy the same $455 suit for $448. In that case, most
people said they wouldn’t. In reality, of course, $7 is $7. The only question you
should ask yourself is whether the 15 extra minutes of your time is worth the
extra $7 you save. Whether the amount from which the $7 is saved is $10 or
$10,000 should be irrelevant. You have to force yourself sometimes to think in
this kind of absolute way.
The market encourages all kinds of anchoring. The price at which you bought a
stock is very vivid in your mind, but in reality you’d be much better off if
immediately after the purchase you forgot the price you paid. We also ascribe
importance to 52-week highs and lows, but why that? It would make as much
sense to look at the highs and lows over 70 weeks, or 40 weeks.
One danger of anchoring is that it can cause regret, which usually isn’t very
useful in decision-making. There was an excellent study that looked at people
who forgot to mail in their frequent-flyer-program applications, who were far less
likely to go ahead and join after getting back from a long trip. They missed getting
credit for this big flight and thought if they joined now it would make them regret
it. That’s analogous to not buying a stock at $30 because you originally looked
into it at $20 and didn’t buy. Buying at $30 will make you regret even more that
you missed it at $20, so you won’t buy it. That’s dumb if you really think it’s worth
$50.
With investing, focusing on what’s already happened is generally a bad strategy.
The decision at any point should be only about looking forward. Just adjusting
how you set up your spreadsheets and what you track on reports could help in
this regard.
We set up a study in which we had students answer 50 multiple-choice
questions. In the first case, they used a worksheet for their answers and then
were asked to transfer the answers to a scoring sheet, called a “bubble” sheet.
They handed in both the worksheet and the scoring sheet and the proctor at the
front of the room graded their answers and gave them 10 cents for each correct
answer.
In the second setup, we made one important change. This time the scoring
bubble sheet had the correct answers pre-marked. So the participants, when
transferring their worksheet answers to the bubble sheet, could lie if they’d
chosen the wrong answer and put the right one on the bubble sheet. They were
asked to count their right answers and write the total on the top of the scoring
sheet, which they handed in along with the worksheet. The proctor then gave
them 10 cents for each correct answer based on their reported total.
In the final case we pushed the participants’ integrity to the limit. In this case they
were told to destroy both the worksheet and the bubble sheet and just take
directly from a jar of coins at the front of the room what they had earned based
on their correct answers.
What happened? The first group, which had no opportunity to cheat, got an
average of 32.6 of the questions right. The second group, which could cheat but
might have gotten caught because they still handed in their worksheets, claimed
to have solved 36.2 questions right, on average. Interestingly, the last group
ended up cheating at almost exactly the same level as the second group, even
though there was no chance of their getting caught.
The first conclusion, unfortunately, is that when given the opportunity many
honest people will cheat – if only a little bit – and still feel very comfortable about
it. What was more counterintuitive was that the participants weren’t influenced by
the risk of being caught – they cheated at about the same level even when there
was no risk they’d be found out.
This to me points up the critical importance of self-interest and conflicts of
interest. When life will be better for you if you choose a certain direction, it’s very
hard not to take that direction. I believe that’s at the center of what’s plaguing our
financial and healthcare systems. Imagine you go to a financial advisor or a
physician and there are two choices, A is better for you and B is better for them.
What do you think they’ll recommend? If the doctor owns the equipment for a test
or a procedure, they don’t have to be bad people – they just have to be people –
to be influenced by that.
I don’t think you can overstate how careful we have to be about the incentives of
people who make decisions that affect us or who give us advice. When you see
conflicts of interest, it’s a very good indicator that something is going to go very
wrong, very soon. One of the best remedies here is transparency – but it only
helps if people actually care about the conflicts of interest that might be exposed.
The basic idea is that ownership changes our perspective, which applies to both
material things as well as points of view. One principle involved is that the more
work you put into something, the more ownership you begin to feel for it. For
example, I can say from personal experience that pride of ownership is inversely
proportional to the ease with which I’ve been able to assemble furniture. We
have a term for that: the “Ikea effect.”
Once we take ownership of an idea – whether it’s related to politics or sports or
investing – a lot of changes take place. We probably fall in love with the idea
more than we should. We value it for more than it’s worth. And quite often, we
have trouble letting go of it because we can’t stand the idea of its loss. What are
you left with then? A rigid and unyielding ideology that can be quite detrimental to
clear thought.
One interesting thing is trying to create an iPhone application to help people think
better about how much money they’re spending and on what. Nothing is finished
yet, but our first idea is sort of an “alter-ego” application. If you are tempted to
buy something, you choose some trusted friend or family member from your
contact list and then are prompted to ask yourself, “What advice would this
person give me?” You don’t actually ask the person at this point, but the goal is
to force you to think with an outside perspective. The second step is then to find
out from that person what they actually would say. The first step causes you to
reflect, which is important, and the second allows you to learn from others to
inform longer-term decisions. We’re actually looking at lots of things that allow
you to use your cell phone as a time buffer between your intentions and your
actual behavior.
There’s not one magical solution, but helping people identify the various sources
of mistakes should make them better prepared to fight them. Emotions like anger
or fear, for example, are huge drivers of mistakes. But it turns out emotions are
fleeting, so one response could be to figure out how to impose a delay between
the time you feel something and the time you act on it. Other people are very
helpful here – you might agree with a business partner or a friend that you have
to explain why you’re taking a certain action before you actually do it.
I find forcing yourself to be a devil’s advocate, or assigning someone else to do it,
can be very helpful. I also recommend to people that pre-committing to certain
strategies and then writing them down can go a long way to keeping irrational
influences from swaying you.
None of this is easy. I think about this all the time and still find myself influenced
by the wrong things too often. But the response to the book has been incredibly
gratifying – people recognize themselves in the pages and want any help they
can get in avoiding stupid decisions.

