Contrary to common folk wisdom that financial traders share a certain set of personality traits, e.g., aggressiveness or extraversion, we found little correlation between measured traits and trading performance. The study finds that subjects whose emotional reaction to monetary gains and losses was more intense on both the positive and negative side exhibited significantly worse trading performance. Psychological traits derived from a standardized personality inventory survey do not reveal any specific \trader personality profile”, raising the
possibility that trading skills may not necessarily be innate, and that di erent personality types may be able to perform trading functions equally well after proper instruction and practice.
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rssThe psychophysiology of trading
The paper is old (2002) but still interesting. Andrew W. Lo and Dmitry V. Repin in “The Psychophysiology of Real-Time Financial Risk Processing” report the results of their experiment to measure the emotional responses of ten traders—five highly experienced and five with low to moderate experience. They wired up these traders to plot real-time changes in their skin conductance, blood volume pulse, heart rate, electromyographical signals, respiration, and body temperature.
Although the sample is very small and hence just a first stab, the authors noted some significant differences between the two types of traders. The less experienced traders, for instance, seem to be more sensitive to short-term changes in such market variables as deviations and trend reversals. Both sets of traders, however, saw spikes in their blood volume pulse in the face of volatility events.
Lo and Repin conclude that “emotion is a significant determinant of the evolutionary fitness of financial traders.”
Girls can’t trade
Coates, John M., Mark Gurnell and Aldo Rustichini (2009) Second-to-fourth digit ratio predicts success among high-frequency financial traders. Proceedings of the National Academy of Science, 106/2: 623-8.
Introduction
What does traders’ success on the market floor depend on? Earlier studies have shown that one’s level of testosterone did affect one’s daily results. Since “prenatal androgens have organizing effects on the developing brain, increasing its later sensitivity to […] testosterone”, it would make sense that prenatal androgens also have a structural effect on a trader’s results on the long term.A surrogate marker is commonly used to define one’s exposure to prenatal androgens: the second-to-fourth digit length ratio, noted 2D:4D. Such market has been found to predict professional athletes’ performance. In this paper, the autors test the hypothesis that a high exposure to prenatal androgens as indicated by 2D:4D would also predict traders’ long-term profit.