Judgmental Overcondence and Trading Activity

2012 
We investigate the theoretically proposed link between judgmental overcondence and trading activity. In addition to applying classical measures of miscalibration, we introduce a measure to capture misperception of signal reliability, which is the relevant bias in the theoretical overcondence literature. We relate the obtained overcondence measures to trading activity in call and continuous experimental asset markets. Our results conrm prior ndings that classical miscalibration measures are not related to trading activity. However, misperception of signal reliability is signicantly linked to trading volume, particularly in the continuous market. In addition, we nd that men trade more than women at high levels of risk aversion, but the gender trading gap vanishes as risk aversion lessens. The reason is that the trading activity of women seems to be more sensitive to risk attitudes than that of men. JEL classication: D03; C91; G12;
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