its not appropriate to compare reactions in the stock market to reactions in games. in stocks you are more cautious since theres a real world loss and you dont have a real opponent trying to beat you. In games you take much more chances since theres no consequences in real life and theres always an opponent trying to beat you within minutes or seconds.
theres no real way to tell why you lose or win a game since its impossible to predict another persons mood, personalities, and risks, regardless of the skill level. this researcher is going to waste time and money only to come to the conclusion that you cant tell why a person wins or loses games.