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Most finance professionals have heard the term risk aversion and know how it affects investor assets. A risk-averse investor will consider risky assets or portfolios only if they provide compensation for risk via a risk premium. When faced with two investments with similar expected returns but different risks, a risk-averse investor will prefer the investment with the lower risk. But what is loss aversion?

To explain loss aversion, behavioral economists rely on a model, developed in 1979, called prospect theory. Kahneman & Tversky's (1979) prospect theory identified loss aversion as way to explain how people assess decisions under uncertainty. An economist would describe loss aversion as the case when an individual's utility is concave over gains and convex over losses. In layman's terms, it means that a gain contributes less to utility/happiness than an equal dollar loss subtracts from utility/happiness. 

Let's consider an example. Suppose you are called into your supervisor's office and he tells you that you are going to get a raise of $500 per month. How happy would you be on a scale of 1 to 10? Would you rate your happiness a 5? 6? 7? Now consider instead that your supervisor calls you into his office and tells you that you are going to get a pay cut of $500 per month. How upset would you be on a scale of 1 to 10? Would you rate your anger more than a 10? For most people, the negative feelings that come from the pay cut would be much stronger than the positive feelings that come from the pay raise. Graphically, figures 1 and 2 compare sample utility functions of a loss-averse individual and a non-loss-averse individual. These figures demonstrate that for loss-averse individuals, the pain of the pay cut is more intense than the joy of the pay raise.

Research has repeatedly shown that loss aversion can have a strong influence on financial decisions. Genesove & Mayer (2001) show that home sellers appear to have a strong aversion to selling their homes for less than the price they paid. Home sellers who faced a nominal loss set asking prices higher than those set by sellers not facing nominal losses. Haigh & List (2005) show that in experimental tests, professional traders from the Chicago Board of Trade (CBOT) exhibit even more loss a version than non-professional student subjects.

Retail investors can also experience loss aversion and thus be more sensitive to losses than an investor who is not loss-averse. As an advisor, it is important to recognize that while risk aversion can cause investors to shy away from buying certain types of risky assets, loss aversion can influence your clients to manage the investments in their portfolios in a suboptimal way. For example, suppose your client is holding onto a stock that has declined significantly in value since the time it was purchased. You may recommend selling the stock. However, since selling the stock would mean realizing a loss, the client may be resistant to doing so, despite your professional assessment and recommendation. This reticence has nothing to do with your client's lack of trust in you but everything to do with loss aversion. Selling the stock may be in the best interest of your client but it would force him or her to feel the loss. This feeling of loss can be strong enough to cause your client to keep a poor-performing stock. Separating the decision from the feeling of loss is essential for the client to make a sound financial decision.

So what should you do as an advisor? Utilizing a behavioral economics nudge may be effective in this type of situation. Reframing the decision as one that could lessen a loss, or has the opportunity to generate a gain, may help ameliorate the client's loss aversion. Explaining that it is best to sell because the stock may continue to fall in value or that selling the stock will free up some cash that could be used for a better investment may be helpful. Additionally, pointing out the potential tax benefits of realizing the investment loss may be useful in reframing the decision as one that could generate a potential gain.


Key Takeaways

  • Risk aversion and loss aversion are different and have different influences on client financial decisions.
  • It is important to get a client to separate a financial decision that will incur a loss, from the feeling of loss.
  • Reframing an investment decision in a way such the client does not view it as a loss (tax benefit, opportunity for a different investment, etc.) could be helpful in enabling the client to overcome loss aversion.

Genesove, D. and Mayer, C. (2001). "Loss Aversion And Seller Behavior: Evidence from the Housing Market," Quarterly Journal of Economics 116 (4), 1233-1260.

Haigh, Michael S. and List, John A. (2005). "Do Professional Traders Exhibit Myopic Loss Aversion? An Experimental Analysis," The Journal of Finance 60 (1), 523-534.

Kahneman, Daniel, and Amos Tversky. (1979). "Prospect Theory: An Analysis of Decision under Risk." Econometrica 47 (2), 263292.


The views and opinions expressed herein are those of the author, who is not affiliated with Hartford Funds. The information contained herein should not be construed as investment advice or a recommendation of any product or service nor should it be relied upon to, replace the advice of an investor's own professional legal, tax and financial advisors. Hartford Funds Distributors, LLC.

Hartford Funds is not responsible for, and does not validate, any information, opinions, assertions, or statements expressed within these articles, or the identity or credentials of the individuals communicating through the site. Some of the articles may contain links to information created and maintained by other, unaffiliated organizations and individuals. Hartford Funds does not control, cannot guarantee, and is not responsible for the completeness, accuracy, timeliness, or the continued availability or existence of this outside information or the information presented herein. This material is intended for use by financial professionals or in conjunction with the advice of a financial professional.


About The Author

Professor and Director of the Institute for Behavioral and Household Finance (IBHF) at Cornell University

The mission of the IBHF is research and education in the areas of behavioral finance and household finance with the goal of better understanding and modeling financial behavior.

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