Male chess players play more aggressively against attractive female opponents

"Aggressiveness" is a really misleading term here. The title should be something like "Males in the presence of attractive females feel better about their situation, which leads to underestimation of risk and really poor decision making. Oh yeah, and chess."

I highly doubt whether they're using the right econometric models.

In table 2 and 3 they're using an OLS model although the dependent variable is binary ("choosing and aggressive strategy 0/1"). A logit model seems much more appropriate here.

This does not give me much confidence in the results.