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J4  2012, Vol. 9 Issue (7): 1036-    DOI:
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Nonlinear Dynamic Model of Security Price Based on Behavioral Finance Experiments
WANG Li-Min, LIU Xiang-Dong, LIU Cheng, TIAN Fei
University of Science and Technology Beijing, Beijing, China

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Abstract  To explore the relationship between traders’ capital structure and stock price volatility, we design and implement ten behavioral finance experiments with the same contents. According to the experimental phenomena and the principle that the positions of traders reflect their investment attitude towards market, this paper constructs a mathematical model describing the average market investment attitude and stock price. We first study the stability of the model by the related theory of nonlinear discrete dynamic system, and then identify contagion effect based on whether financial market is stable. Numerical simulations indicate that there exists an optimal contagion effect in the region of rational contagion effect. Furthermore, it also investigates the relationship between capital structure and stock price volatility when contagion effect is rational. Specifically, under the influence of rational contagion effect, when the numbers of long position traders and short position traders are roughly equal in the market, share price volatility shows a parallel trend with slight amplitude; when the number of long position traders are more (less) than the number of short position traders, share price volatility shows a decline (an upward) trend in huge amplitude.
Key wordscapital structure      stock price volatility      experiments      contagion effect     
Received: 20 May 2012     
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WANG Li-Min
LIU Xiang-Dong
LIU Cheng
TIAN Fei
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WANG Li-Min,LIU Xiang-Dong,LIU Cheng等. Nonlinear Dynamic Model of Security Price Based on Behavioral Finance Experiments[J]. J4, 2012, 9(7): 1036-.
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