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The Global Financial Tsunami During 2007-2009

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The Global Financial Tsunami during 2007-2009 is considered as the most serious financial crisis since the second half of the twentieth century, leading to liquidity shortage in the world’s main financial markets, further influencing the real economy, and sending the world into recession. This crisis primarily stemmed from the subprime mortgage crisis in the U.S., which can be interpreted as the banking emergency triggered by the burst of the real estate market bubble, excessive credit, and abuse of financial derivative instruments (Szyszka, 2011). Most studies about the chief culprit of this crisis mainly focused on “institutional failure” (Barberis, 2011), while psychological factors also played a central role because of “animal spirits” …show more content…

It can be intensified by the tendency that people evaluate highly possible and unlikely events very extremely, that is, regard high probability as certainty and very low probability as impossibility (Kahneman and Tversky, 1979). The non-linear probability weighting function is shown in Figure 1. Risk undervaluation is mainly attributed to overconfidence, which is the tendency to exaggerate the predictive ability and assess the situation over-optimistically (Rizzi, 2010). According to Lichtenstein and Fischhoff (1977), experts are more prone to be overconfident than nonexperts because of the awareness of their knowledge. This was reflected by managers’ overreliance on quantitative risk models without understanding their limitations.
Overconfidence is related to five types of heuristics, which are illusion of control, anchoring, hindsight, representativeness bias, and confirmation bias. Illusion of control is the belief that people can influence outcomes that actually cannot be influenced (Langer, 1975). By relying on quantitative credit scoring models, managers believed that they can take charge of the market, overlooking the concept of systematic risk, which can never be avoided. Anchoring refers to the behavior that people evaluate an event based on past data (Dedu, Sebastian and Radu, 2011). Because financial derivative instruments became increasingly complex, managers were

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