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Favoritism Under Social Pressure: Evidence From English Premier League
Herrmann, Vojtěch ; Večeř, Jan (advisor) ; Hlávka, Zdeněk (referee)
The aim of this thesis is to study the extent to which the English Premier League referees are influenced by social pressure, especially by the home support and by the general popularity of the teams. Using regression analysis, we compare the actual length of the overtime, which is fully in the competence of the referee, with the predicted one from the usual game stoppages. Then we try to identify factors that contribute to any possible discrepancy. Our results suggest that the games tend to be extended beyond the expectations when the outcome of the game still can change, i.e., when the score differential at the time 90:00 is either zero or one. However, this extra extension happens almost regardless of the playing teams and thus we find no evidence for referee bias towards any specific team. However, a small bias towards the group of "Big" teams has been found, but only in the games in which the score differential was different from one.
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How to detect favoritism at dance competitions
Silvarová, Lenka ; Svoboda, Miroslav (advisor) ; Babin, Jan (referee)
The thesis deals with the motivation of jurors privileging some of the participants in dance competitions. It gives an overview of the dance sport and its rules, analyzes the factors that have an impact on privileging. Based on regression analysis it determines particular jurors who are not able to dismiss a connection to specific couples. Supporting analysis determines twenty-seven jurors who have different views, or prefer some couples and therefore can be suspected of favouritism. The thesis reveals that jurors, who are from the same club as couples, have a tendency to evaluate better and deviate from the average of the jurors by 0.3 to 0.4 point. It shows the significance of the "average marks of all jurors -- 2.5" and "lap of contest" variables.
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