In ski jumping, the length of the jump is measured electronically, but on the other hand, five judges assess how good the jump was and award style points for it.
This is done after first removing the highest and lowest points and then summing the three remaining points to determine the final result for the jump.
But is it the case that the judges favor the jumpers who come from the same country as themselves.
Alex Krumer from Molde University College, together with Felix Otto and Tim Pawlowski from the University of Tübingen in Germany, have now studied it.
Studied 203 competitions
The researchers have used data from 203 different competitions from the World Cup, Olympics and World Cup competitions from 2010 to 2017. And according to their study, a majority of judges will favor their own compatriots.
Of the 12 most observed countries, only Norway and Finland did not benefit their compatriots.
However, according to the study, French, Czech, Polish and especially Russian judges have favored their own jumpers by giving them higher scores.