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Incorporating Human Behavior Into Wall Street Mathematical Models

After watching the stock market struggle for the past year, financial experts from Wall Street and academia are putting more effort into bringing behavioral modeling into their complex financial calculations. "The risk models proved myopic, they say, because they were too simple-minded. They focused mainly on figures like the expected returns and the default risk of financial instruments. What they didn't sufficiently take into account was human behavior, specifically the potential for widespread panic." Analysts are looking at research from other fields to supplement the hard mathematics of risk assessment. "Financial markets, like online communities, are social networks. Researchers are looking at whether the mechanisms and models being developed to explore collective behavior on the Web can be applied to financial markets." Another avenue they're exploring is how we react to the spread of disease. Jon M. Kleinberg, a computer scientist at Cornell, said, "The hope is to take this understanding of contagion and use it as a perspective on how rapid changes of behavior can spread through complex networks at work in financial markets."

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  1. Austrian Economics, anyone? by dark_requiem · · Score: 5, Informative

    Human behavior is the basis for the Austrian school of economic thought. Has been from its roots. Ludwig von Mises, one of the founders of Austrian economics, titled his magnum open "Human Action". The basic idea of Austrian economics is that the study of economics is an a priori discipline. In other words, you can't implement, from both a practical and ethical standpoint, experiments to study economics on a useful scale. Instead, economics must be viewed as a study of human behavior. Humans are the principle actors in an economic system, so their behavior and drives must be the primary focus of economic study. The study of economics can therefore be viewed as a study of groups of self-interested participants working for their own betterment.

    Incidentally, Austrian economics also posits that interference with the operations of markets produces a boom-bust business cycle, by promoting misallocation of scarce resources. It's worth noting that many Austrian economists were predicting our current economic crisis well before it occurred, when the more mainstream Keynesians were still calling it a golden age of economic development.

    What is being proposed here is to continue to view markets as purely mathematically modelable phenomena. Economic decisions occur on the most local of levels, the individual level. No model accounts for the variability of the individual. For a Keynesian-style planned economy to function requires omniscience.

    1. Re:Austrian Economics, anyone? by osu-neko · · Score: 5, Informative

      The basic idea of Austrian economics is that the study of economics is an a priori discipline.

      Which is to say, it's an attempt to reason from assumptions instead of draw conclusions from evidence. An a priori discipline is an arcane way of saying a philosophy, mathematical system, or religion. It's the opposite of science, which is a posterioi.

      --
      "Convictions are more dangerous enemies of truth than lies."
  2. Krugman recently called for similar adjustments. by slashdotmsiriv · · Score: 4, Informative
  3. Re:Get rid of Economic Man by jcr · · Score: 4, Informative

    I dislike how suddenly the financial markets have gotten back into these windfall risky investments,

    You can thank the geniuses in the legislature and the Federal Reserve who protect them from their losses for that.

    -jcr

    --
    The only title of honor that a tyrant can grant is "Enemy of the State."
  4. Re:Death Insurance gambling by nomadic · · Score: 5, Informative

    Investing in life insurance scams is plain gambling. No wealth is created and the insurance company generally is smart enough to set itself up as "the house". And the house always wins.

    Oh, not at all. The insurance companies HATE this idea, they do NOT want people to be allowed to invest in life insurance policies, because these investors will do anomalous things like PAY THE POLICY PREMIUMS, and not let the policies lapse. As it is now a huge number of life insurance holders let their coverage lapse (either through financial problems, laziness, cost gets too high, etc.) In that case the insurance company gets the benefit of all those payments already made (sometimes DECADES of them), without any of the cost (i.e. having to pay out the policy when the holder dies).