Zweig, Jason. Your Money and Your Braine

Your Money and Your Brain

How the New Science of Neuroeconomics Can Help Make You Rich

Jason Zweig

Simon & Schuster

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Copyright © 2007 by Jason Zweig

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Zweig, Jason.

Your money and your brain: how the new science of neuroeconomics can help make you rich / Jason Zweig.

p. cm.

Includes bibliographic references.

1. Investments—Psychological aspects. 2. Finance—Decision making. 3. Neuroeconomics. HG4515.15.Z84 2007

332.601'9—dc22 2006100986

ISBN-13: 978-1-4165-3979-7

ISBN-10: 1-4165-3979-4

Visit us on the World Wide Web:

http://www.SimonSays.com

For my wife, who did the real work with love and grace

Contents

Chapter One

Neuroeconomics

Chapter Two "Thinking" and "Feeling"

Chapter Three

Greed

Chapter Four

Prediction

Chapter Five

Confidence

Chapter Six

Risk

Chapter Seven

Fear

Chapter Eight

Surprise

Chapter Nine

Regret

Chapter Ten

Happiness

Appendices

Notes

Acknowledgments

Photographic Insert

CHAPTER ONE

Neuroeconomics

BRAIN, n. An apparatus with which we think that we think.

—Ambrose Bierce

"HOW COULD I HAVE BEEN SUCH AN IDIOT?" IF YOU'VE never yelled that sentence at yourself in a fury, you're not an investor. There may be nothing across the entire spectrum of human endeavor that makes so many smart people feel so stupid as investing does. That's why I've set out to explain, in terms any investor can understand, what goes on inside your brain when you make decisions about money. To get the best use out of any tool or machine, it helps to know at least a little about how it works; you will never maximize your wealth unless you can optimize your mind. Fortunately, over the past few years, scientists have made stunning discoveries about the ways the human brain evaluates rewards, sizes up risks, and calculates probabilities. With the wonders of imaging technology, we can now observe the precise neural circuitry that switches on and off in your brain when you invest.

I've been a financial journalist since 1987, and nothing I've ever learned about investing has excited me

more than the spectacular findings emerging from the study of "neuroeconomics." Thanks to this newborn field—a hybrid of neuroscience, economics, and psychology—we can begin to understand what drives investing behavior not only on the theoretical or practical level, but as a basic biological function. These flashes of fundamental insight will enable you to see as never before what makes you tick as an investor.

On this ultimate quest for financial self-knowledge, I'll take you inside laboratories run by some of the world's leading neuroeconomists and describe their fascinating experiments firsthand, since I've had my own 1 brain studied again and again by these researchers. (The scientific consensus on my cranium is simple: It's a mess in there.)

The newest findings in neuroeconomics suggest that much of what we've been told about investing is wrong. In theory, the more we learn about our investments, and the harder we work at understanding them, the more money we will make. Economists have long insisted that investors know what they want, understand the tradeoff between risk and reward, and use information logically to pursue their goals.

In practice, however, those assumptions often turn out to be dead wrong. Which side of this table sounds more like you?

You're not alone. Like dieters lurching from Pritikin to Atkins to South Beach and ending up at least as heavy as they started, investors habitually are their own worst enemies, even when they know better.

•Everyone knows that you should buy low and sell high—and yet, all too often, we buy high and sell low.

•Everyone knows that beating the market is nearly impossible—but just about everyone thinks he can do it.

•Everyone knows that panic selling is a bad idea—but a company that announces it earned 23 cents per share instead of 24 cents can lose $5 billion of market value in a minute-and-a-half.

•Everyone knows that Wall Street strategists can't predict what the market is about to do—but investors still hang on every word from the financial pundits who prognosticate on TV.

•Everyone knows that chasing hot stocks or mutual funds is a sure way to get burned—yet millions of

investors flock back to the flame every year. Many do so even though they swore, just a year or two before, never to get burned again.

One of the themes of this book is that our investing brains often drive us to do things that make no logical sense—but make perfect emotional sense. That does not make us irrational. It makes us human. Our brains were originally designed to get more of whatever would improve our odds of survival and to avoid whatever would worsen the odds. Emotional circuits deep in our brains make us instinctively crave whatever feels likely to be rewarding—and shun whatever seems liable to be risky.

To counteract these impulses from cells that originally developed tens of millions of years ago, your brain has only a thin veneer of relatively modern, analytical circuits that are often no match for the blunt emotional power of the most ancient parts of your mind. That's why knowing the right answer, and doing the right thing, are very different.

•An investor I'll call "Ed," a real estate executive in Greensboro, North Carolina, has rolled the dice on one high-tech and biotech company after another. At last count, Ed had lost more than 90% of his investment on at least four of these stocks. After Ed had lost 50% of his money, "I swore I'd sell if they fell another 10%," he recalls. "When they still kept dropping, I kept dropping my selling point instead of getting out. It felt like the only thing worse than losing all that money on paper would be selling and losing it for real." His accountant has reminded him that if he sells, he can write off the losses and cut his income tax bill—but Ed still can't bear to do it. "What if they go up from here?" he asks plaintively. "Then I'd feel stupid twice—once for buying them and once for selling them."

•In the 1950s, a young researcher at the RAND Corporation was pondering how much of his retirement fund to allocate to stocks and how much to bonds. An expert in linear programming, he knew that "I should have computed the historical co-variances of the asset classes and drawn an efficient frontier. Instead, I visualized my grief if the stock market went way up and I wasn't in it—or if it went way down and I was completely in it. My intention was to minimize my future regret. So I split my contributions 50/50 between bonds and equities." The researcher's name was Harry M. Markowitz. Several years earlier, he had written an article called "Portfolio Selection" for the Journal of Finance showing exactly how to calculate the tradeoff between risk and return. In 1990, Markowitz shared the Nobel Prize in economics, largely for the mathematical breakthrough that he had been incapable of applying to his own portfolio.

•Jack and Anna Hurst, a retired military officer and his wife who live near Atlanta, seem like very conservative investors. They have no credit card debt and keep almost all of their money in dividendpaying, blue-chip stocks. But Hurst also has what he calls a "play" account, in which he takes big gambles with small amounts of money. Betting on a few long shots in the stock market is Hurst's way of trying to fund what he calls his "lottery dreams." Those dreams are important to Hurst, because he has amyotrophic lateral sclerosis (ALS, or Lou Gehrig's disease); he's been completely paralyzed since 1989. Hurst can invest only by operating a laptop computer with a special switch that reads the electrical signals in his facial muscles. In 2004, one of his "lottery" picks was Sirius Satellite Radio, one of the most volatile stocks in America. Hurst's dreams are to buy a Winnebago customized for quadriplegics and to finance an "ALS house" where patients and their families can get special care. He is both a conservative and aggressive investor.

In short, the investing brain is far from the consistent, efficient, logical device that we like to pretend it is. Even Nobel Prize winners fail to behave as their own economic theories say they should. When you invest —whether you are a professional portfolio manager overseeing billions of dollars or a regular Joe with $60,000 in a retirement account—you combine cold calculations about probabilities with instinctive reactions to the thrill of gain and the anguish of loss.

The 100 billion neurons that are packed into that three-pound clump of tissue between your ears can generate an emotional tornado when you think about money. Your investing brain does not just add and

multiply and estimate and evaluate. When you win, lose, or risk money, you stir up some of the most profound emotions a human being can ever feel. "Financial decision-making is not necessarily about money," says psychologist Daniel Kahneman of Princeton University. "It's also about intangible motives like avoiding regret or achieving pride." Investing requires you to make decisions using data from the past and hunches in the present about risks and rewards you will harvest in the future—filling you with feelings like hope, greed, cockiness, surprise, fear, panic, regret, and happiness. That's why I've organized this book around the succession of emotions that most people pass through on the psychological roller coaster of investing.

For most purposes in daily life, your brain is a superbly functioning machine, instantly steering you away from danger while reliably guiding you toward basic rewards like food, shelter, and love. But that same intuitively brilliant machine can lead you astray when you face the far more challenging choices that the financial markets throw at you every day. In all its messy, miraculous complexity, your brain is at its best and worst—its most profoundly human—when you make decisions about money.

And it's not as if emotion is the enemy and reason is the ally of good financial decisions. People who have suffered head injuries that prevent them from engaging the emotional circuitry in their brains can be terrible investors. Pure rationality with no feelings can be as bad for your portfolio as sheer emotion unchecked by reason. Neuroeconomics shows that you will get the best results when you harness your emotions, not when you strangle them. This book will help you strike the right balance between emotion and reason.

Most of all, this book should help you understand your investing self better than you ever have before. You may think you already know what kind of investor you are, but you are probably wrong. "If you don't know who you are," quipped the investment writer "Adam Smith" in his classic book The Money Game, then Wall Street "is an expensive place to find out." (The people who bought Internet stocks in 1999 because they thought they had a high tolerance for risk—and then lost 95% over the next three years—know just how expensive it can be.) Over the years, I've grown convinced that there are only three kinds of investors: those who think they are geniuses, those who think they are idiots, and those who aren't sure. As a general rule, the ones who aren't sure are the only ones who are right. If you think you're a financial genius, you're almost certainly dumber than you think—and you need to chain your brain so you can control your futile attempts to outsmart everyone else. If you think you're a financial idiot, you're probably smarter than you realize—and you need to train your brain so you can understand how to triumph as an investor.

Knowing more about who you are as an investor can make you a fortune—or save you one. That's why it's so important to learn the basic lessons that have emerged from neuroeconomics:

•a monetary loss or gain is not just a financial or psychological outcome, but a biological change that has profound physical effects on the brain and body;

•the neural activity of someone whose investments are making money is indistinguishable from that of someone who is high on cocaine or morphine;

•after two repetitions of a stimulus—like, say, a stock price that goes up one penny twice in a row—the human brain automatically, unconsciously, and uncontrollably expects a third repetition;

•once people conclude that an investment's returns are "predictable," their brains respond with alarm if that apparent pattern is broken;

•financial losses are processed in the same areas of the brain that respond to mortal danger;

•anticipating a gain, and actually receiving it, are expressed in entirely different ways in the brain, helping to explain why "money does not buy happiness";

• expecting both good and bad events is often more intense than experiencing them.

We all know that it's hard to solve a problem until you truly understand what caused it. Many investors have told me over the years that their biggest frustration is their inability to learn from their mistakes. Like hamsters in a spinning wheel, the faster they chase their financial dreams, the faster they go absolutely nowhere. The newest findings in neuroeconomics offer a real opportunity to jump off the hamster-wheel of frustration and find financial peace of mind. By enabling you to understand your investing brain better than ever before, this book should help you:

•set realistic and achievable objectives;

•earn higher returns with greater safety;

•become a calmer, more patient investor;

•use the news and tune out the noise in the market;

•measure the limits of your own expertise;

•minimize the number and severity of your mistakes;

•stop kicking yourself when you do make a mistake;

•control what you can and let go of everything else.

Again and again as I researched this book, I was struck by the overwhelming evidence that most of us do not understand our own behavior. There have been many books whose central message is "almost everything you ever thought you knew about investing is wrong." There have been very few that seek to make you a better investor by showing that everything you ever thought you knew about yourself is wrong. In the end, this book is about more than the inner workings of the investing brain. It is also about what it means to be human—with all our miraculous powers as well as embarrassing frailties. No matter how much or how little you may think you know about investing, there is always more to learn about the final financial frontier: yourself.

CHAPTER TWO "Thinking" and "Feeling"

It is necessary to know the power and the infirmity of our nature, before we can determine what reason can do in restraining the emotions, and what is beyond her power.

—Benedict de Spinoza

The Colon Doctor with a Gut Feeling

Not long ago, Clark Harris, a gastroenterologist in New York City, bought stock in CNH Global N.V., a company that makes farming and construction equipment. When a friend asked why he thought the shares would go up, Dr. Harris—who normally does his homework on a stock before he buys—admitted that he knew next to nothing about the company (which is based in the Netherlands). Nor did the city-dwelling doctor have a clue about farm tractors, hay balers, bulldozers, or backhoes. But he loved the stock anyway. After all, explained Dr. Harris, his middle name is Nelson, so the ticker symbol for the company's shares (CNH) matches his initials. And that, he cheerfully admitted, was why he bought it. When his friend asked whether he had any other reasons to invest, Dr. Harris replied, "I just have a good feeling about it, that's all."

It's not just gastroenterologists who rely on gut feelings when they make financial decisions. In 1999, the stock of Computer Literacy Inc. shot up 33% in a single day, purely because the company changed its

name to the more hip-sounding fatbrain.com. During 1998 and 1999, one group of stocks outperformed the rest of the technology industry by a scorching 63 percentage points—merely by changing their official corporate names to include .com, .net, or Internet.

During the years when shares in the Boston Celtics basketball team were publicly traded, they barely budged on news about important business factors like the construction of a new arena—but went jumping way up or down based on whether the team won or lost the previous evening's basketball game. At least in the short run, the stock price of the Celtics was not determined by such fundamental factors as revenues or net earnings. Instead, it was driven by the things that sports fans care about—like last night's score.

Other investors rely on their gut feelings even more literally than Dr. Harris or Celtics fans. Explaining why he had bought stock in Krispy Kreme Doughnuts Inc., one trader declared online in late 2002, "Incredible, my boss bought 30 dozen [doughnuts] for the whole office at $6.00 each…Hhhmmmmmmmmm fabulous, no need to ruin them with coffee. Buying more [stock] today." Another visitor to an online message board for Krispy Kreme stock proclaimed, "This stock will soar because these donuts are so good."

The first thing these judgments had in common is that they all were driven by intuition. The people who bought these stocks did not analyze the underlying business; instead, they went on a feeling, a sensation, a hunch. The second thing these judgments had in common is that they all were wrong. CNH has underperformed the stock market since Dr. Harris bought it, fatbrain.com no longer exists as an independent company, many "dot-com" stocks fell by more than 90% between 1999 and 2002, Boston Celtics shares generated higher returns during the off-season than while the team was playing, and Krispy Kreme stock has fallen by roughly three-fourths—even though its doughnuts are still as tasty as ever.

Nor is this kind of thinking unique to supposedly naпve individual investors: A survey of more than 250 financial analysts found that over 91% felt that the most important task in evaluating an investment is to arrange the facts into a compelling "story." Portfolio managers talk constantly about whether a stock "feels right," professional traders regularly move billions of dollars a day based on "what my gut is telling me," and George Soros, one of the world's leading hedge fund managers, reportedly considers dumping his holdings when he gets a backache.

In his book Blink, Malcolm Gladwell claims that "decisions made very quickly can be every bit as good as decisions made cautiously and deliberately." Gladwell is a superb writer, but when it comes to investing, his argument is downright dangerous. Intuition can yield wondrously fast and accurate judgments, but only under the right conditions—when the rules for reaching a good decision are simple and stable. Unfortunately, investment choices are seldom simple, and the keys to success (at least in the short run) can be very unstable. Bonds do well for a while and then, as soon as you buy them, they generate lousy returns; your emerging-market stock fund loses money for years and then, right after you bail out, it doubles in value. In the madhouse of the financial markets, the only rule that appears to apply is Murphy's Law. And even that guideline comes with a devilish twist: Whatever can go wrong will go wrong, but only when you least expect it to.

While Gladwell does concede that our intuitions can often mislead us, he fails to emphasize that our intuitions about our intuitions can be misleading. Among the most painful of the stock market's many ironies is this: One of the clearest signals that you are wrong about an investment is having a hunch that you're right about it. Often, the more convinced you are that your hunch will pay off big, the more money you are likely to lose.

In a game governed by rules like these, if all you do is "blink," your investing results will stink. Intuition has a legitimate role to play in investing—but it should be a subordinate, not a dominant, role. Fortunately, you can make your intuitions work better for you, and you do not have to invest by intuition alone. The best financial decisions draw on the dual strengths of your investing brain: intuition and analysis, feeling and thinking. This chapter will show you how to get the most out of both.