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    Dr. Marcinko is originally from Loyola University MD, Temple University in Philadelphia and the Milton S. Hershey Medical Center in PA; as well as Oglethorpe University and Emory University in Georgia, the Atlanta Hospital & Medical Center; Kellogg-Keller Graduate School of Business and Management in Chicago, and the Aachen City University Hospital, Koln-Germany. He became one of the most innovative global thought leaders in medical business entrepreneurship today by leveraging and adding value with strategies to grow revenues and EBITDA while reducing non-essential expenditures and improving dated operational in-efficiencies.

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“Massively Confused Investors Making Conspicuously Ignorant Choices”

By Somnath Basu PhD, MBA

How well we make investment decisions depends in part on how reasoned or emotional the decision was. The greater the emotional content the more likely will be the mistake. It is useful for all of us to understand the emotional pitfalls of financial decision-making.

Financial Psychologists

An appropriately titled study by a financial psychologist Michael S. Rashes, “Massively Confused Investors Making Conspicuously Ignorant Choices” cites that the widespread phenomenon witnessed in the market, whereby several stocks with similar ticker symbols all went up in value when positive news was announced about any one of them.

Example: http://ideas.repec.org/a/bla/jfinan/v56y2001i5p1911-1927.html

A case in point is the parallel movement between two entirely unrelated stocks, MCIC (ticker symbol for the telecommunications firm, MCI, bought by Worldcom in 1997), and MCI (ticker symbol for the Massmutual Corporate Investors fund). The acquisition of MCI, the telecommunications firm, in 1997-8 caused an upward movement in its stock (MCIC). That movement was also closely correlated with the upward movement in the stock of Massmutual Corporate Investors (MCI), whose ticker symbol was the same as the telecommunications company’s name. Rampant confusion of this sort strongly supports the notion that irrationality, not rationality, rules the financial markets. Another noted scientist, B. Malkiel suggests that when it comes to investing, people generally follow their emotions, not their reason, their hearts, not their minds.

Behavioral Finance and Economic Gurus

This line of argument has been gaining credibility over the last decade or so, not only among behavioral finance experts, but also economists themselves, as well as stock market pundits and the population at large. There is a strong sense among all these groups that greed, exuberance, fear and herding behavior affect markets as much as or more than calculations of P/E ratios, profit projections, or market benchmarks. The bursting of the stock market bubbles of 2000 and 2008 only confirmed these long-held suspicions. As a result, widely used economic models based on rational investor behavior require some reevaluation and could be found to be unreliable at best and irrelevant at worst.

The Decision Biases

The following is only a partial list of the biases that may be induced in you if the financial decisions you make are based on emotion and not on reason. The list includes the bias name, a descriptive definition and an example of application error. Before closing that next trade you make, a good question to ask yourself is whether any of the biases from the list were included in your financial decision. If so, these decisions too need further evaluation.

1. Over-Confidence:

Over-estimating the chances of correctly predicting the direction of price changes!

Example: Attribute good outcomes (i.e., gains) to your skill while attributing bad outcomes (i.e., losses) to your bad luck.

2. Pride and Regret:

Investors often over-estimate their powers of discerning stock winners from losers. Some physicians and other investors (essentially, active traders) may rapidly sell and buy back stocks, in order to capture expected gains.

Example: Selling your winning picks early and holding onto losers hoping they rebound. Studies show that doing the opposite can increase your annual returns by 3-4%.

3. Cognitive Dissonance:

Suggests that investors experience an internal conflict when a belief or assumption of theirs is proven wrong

Example: It’s easier to remember your winning picks than your losing ones since the latter outcomes disagreed with your earlier beliefs.

4. Confirmation Bias:

Suggests that they try to seek out information that will help confirm their existing views whether those views be right or wrong.

Example: When you hear someone agreeing with your investment decision you feel that person is much more knowledgeable than one who disagrees with you.

5. Anchoring:

A phenomenon whereby people stay within range of what they already know in making guesses or estimates about what they do not know.

Example: The Dow Jones Industrial Average (DJIA), which grew from a value of 41 in 1896 to 9,181 in 1998, does not include dividends. They then value the index in 1998, including dividends, at a whopping 652,230. When asked, investors estimate the value of the DJIA would be if dividends were included, all were way off the mark, keeping their answers close to its familiar value of 9,181. The highest guesses came in at under 30,000, less than 5% of the actual value.

6. Representative Heuristics:

An over-reliance on familiar clues, such as past performance of a stock!

Example: most investors assume that the stock of a company with strong earnings will perform well and that the stock of a company with weak earnings will perform poorly. The law of large numbers suggests however that the exact opposite is much likelier to be true.


And so, your thoughts and comments on this ME-P are appreciated. Feel free to review our top-left column, and top-right sidebar materials, links, URLs and related websites, too. Then, subscribe to the ME-P. It is fast, free and secure.

NOTE: Somnath Basu is a Professor of Finance at California Lutheran University and the creator of the innovative AgeBander (www.agebander.com) retirement planning software.



5 Responses

  1. Financial Planning and Risk Management Handbooks for Doctors and Financial Advisors



    For more on this topic, see the handbooks above.

    Ann Miller RN, MHA



    Dr. Basu – excellent post and financial wisdom!

    And so, I was thinking recently about how much does an equity portfolio’s allocation to different categories of equity (growth, value, large-cap, and small-cap) contribute to its total return?

    I recall that Bruce I. Jacobs and Kenneth N. Levy raised this question more than a decade ago in the article “High-Definition Style Rotation” (The Journal of Investing, Fall 1996, pp. 14–23, Institutional Investor, Inc. [212] 224-3185).

    While acknowledging that large, well-diversified, multi-manager plans cannot add significant value through stock selection, they agree with the conventional wisdom that asset allocation has the largest impact on investment fund returns. Approximately 90% of an average fund’s total return variance can be traced to its investment policy and the long-term allocation of its investments across asset classes. However, the authors contended that FAs consultants and funds lately are more concerned with allocation of investments within an asset category.

    Jacobs and Levy noticed that there have been substantial return differentials between various styles. Accordingly, style rotation, rotating portfolio investments across stocks of different styles as economic and market conditions change, offers an opportunity to enhance portfolio returns.

    However, they refined this thesis by performing style rotation based on finely drawn distinctions between style attributes rather than the simplistic definitions normally used. Clear and precise definitions of style (or what they call high-definition style) facilitate more accurate style allocations, which can provide superior realized returns. The returns on these more tightly drawn style categories are referred to by the authors as “pure” versus “naive” returns. These “pure” returns tend to be less volatile and may be more consistent, hence more predictable than “naive” returns.

    For example, in the five-year period, 1990–1994, the high-definition style rotation strategy outperformed the market by 5.45% and outperformed a hypothetical index-based style rotation strategy by 2.67%. But – how about today – any thoughts?

    Thanks again on behalf of all ME-P readers.

    Dr. David Edward Marcinko MBA CMP™


  3. Somnath,

    This is my favorite quote on behavioral finance and economics.

    “Merely being exposed to the concept of money has been shown to have dramatic effects on behavior, and it has even been argued that money can be conceptualized as a drug,” doing much the same thing as other stimulants in driving human behavior.

    David Gal
    [Northwestern University]
    Journal of Consumer Research


  4. Video Clip of Richard Thaler PhD
    [More on behavioral economics]

    Richard Thaler is renowned for his extremely influential contributions to the emerging field of behavioral economics over the last three decades. He has made it his habit to look for data in unusual places. Here he draws on the behavior of New York City taxi cab drivers, game show participants, and National Football League teams to see what can be learned about human behavior.

    Thaler is Professor of Behavioral Science and Economics, and Director of the Center for Decision Research, Graduate School of Business, University of Chicago.

    Hope Rachel Hetico RN MHA
    [Managing Editor]


  5. Analytic Thinkers are Less Religious, too!

    Hope – religious faith – like human behavior – is a complex phenomenon, shaped by multiple aspects of psychology and culture.

    Now, researchers have shown that at least one factor consistently appears to decrease the strength of people’s religious belief: analytic thinking.


    Is there an analogy here to behavioral economics?



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