The High Cost of Emotion in Personal Finance
Our rational side knows market timing is a fool’s game. Yet, short-term trends sometimes drive our decisions.
Humans are hard-wired in ways that helped our ancestors survive over thousands of years. Investing in markets is a recent concept – the New York Stock Exchange (NYSE) was founded in 1817. Unfortunately, the cognitive processes that aided our ancestors may undermine our success in modern markets. Behavioral finance is an emerging field that examines how people use the tools of finance, rather than studying the tools themselves.
One common behavioral mistake is known as “myopic loss aversion.” Behavioralists have estimated that people hate losses roughly two-and-a-half times as much as they like gains. We exert more effort to avoid losses than to achieve gain. Suppose an investor’s portfolio rose 40% and then dropped 20%. He/she would feel the loss about 2.5 times as much as the gain. The drop causes heightened loss aversion, potentially leading the investor to panic and act against what he/she knows is rational.
Researchers measured the cost of this approach by comparing the performance of return chasing with a buy-and-hold strategy. The research reveals return chasing leaves nearly 2% on the table annually. Rather than earning 10% annually over the long term, those impaired by the recency bias took a 20% haircut and ended up with 8% annualized returns.
From just $107.88 $24.99 for Kiplinger Personal Finance
Become a smarter, better informed investor. Subscribe from just $107.88 $24.99, plus get up to 4 Special Issues
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
Understanding the lessons of behavioral finance can greatly increase your odds of achieving financial freedom. Realizing that these tendencies exist is the first step in making better decisions. Remember, we hate losses roughly two-and-a-half times as much as we like gains. Fight the urge to panic over investment losses, and realize our tendency to overreact to recent history. Working with a financial adviser can help you stay on track. It’s easy to get emotional when managing your own money. An objective partner can help you overcome harmful behavior biases and remain focused on long-term goals.
Sources: Bloomberg, CFA Institute, Wall Street Journal, About Archeology, Federal Reserve Bank of St. Louis, Investment Company Institute, Morgan Stanley International
David has served as CEO of Mercer Advisors since 2008. He is responsible for the firm’s strategic vision, business plan execution, and organizational structure.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

-
Your Parents' Retirement Plan Won’t Work for You (The Stats Are In)Five stats show how you need to rethink retirement, because "the future ain’t what it used to be."
-
Has the New Tax Law Killed Roth Conversions for Retirees?The OBBBA's permanent lower tax rates removed the urgency for Roth conversions. Retirees thinking of stopping or blindly continuing them should do this instead.
-
Worried About Retirement? 4 Tasks to Calm Your NervesIf you're feeling shaky about your finances as you approach retirement, here are four tasks to complete that will help you focus and steady your nerves.
-
Are Roth Conversions for Retirees Dead in 2026 Because of the New Tax Law?The OBBBA's permanent lower tax rates removed the urgency for Roth conversions. Retirees thinking of stopping or blindly continuing them should do this instead.
-
Worried About Retirement? 4 Tasks to Calm Your Nerves and Build Confidence, From a Retirement ProIf you're feeling shaky about your finances as you approach retirement, here are four tasks to complete that will help you focus and steady your nerves.
-
Financial Success Isn't Just About What You Save, But Who You Trust: Who's in Your Driver's Seat?For financial success in 2026, look beyond the numbers to identify the people who influence your decisions, then set them realistic expectations
-
If You're in the 2% Club and Have a Pension, the 60/40 Portfolio Could Hold You BackIncome from your pension, savings and Social Security could provide the protection bonds usually offer, freeing you up for a more growth-oriented allocation.
-
Bye-Bye, Snowbirds: Wealthy Americans Are Relocating Permanently for Retirement — and This Financial Adviser Can't Fault Their LogicWhy head south for the winter and pay for two properties when you can have a better lifestyle year-round in a less expensive state?
-
Consider These 4 Tweaks to Your 2026 Financial Plan, Courtesy of a Financial PlannerThere's never a bad time to make or review a financial plan. But recent changes to the financial landscape might make it especially important to do so now.
-
We Know You Hate Your Insurance, But Here's Why You Should Show It Some LoveSure, it's pricey, the policies are confusing, and the claims process is slow, but insurance is essentially the friend who shows up during life's worst moments.
-
Is a Caregiving Strategy — for Yourself and Others — Missing From Your Retirement Plan?Millions of people over 65 care for grandkids, adult kids or aging parents and will also need care themselves. Building a caregiving strategy is crucial.