Behavioral finance theory attributes stock market bubbles to cognitive biases that lead to groupthink and herd behavior. Bubbles occur not only in real-world markets, with their inherent uncertainty and noise, but also in highly predictable experimental markets.[1] Other theoretical explanations of stock market bubbles have suggested that they are rational,[2] intrinsic,[3] and contagious.[4]
^Smith, Vernon L.; Suchanek, Gerry L.; Williams, Arlington W. (1988). "Bubbles, Crashes, and Endogenous Expectations in Experimental Spot Asset Markets". Econometrica. 56 (5): 1119–1151. CiteSeerX10.1.1.360.174. doi:10.2307/1911361. JSTOR1911361.
^Topol, Richard (1991). "Bubbles and Volatility of Stock Prices: Effect of Mimetic Contagion". The Economic Journal. 101 (407): 786–800. doi:10.2307/2233855. JSTOR2233855.