Largs Viking Chess Congress

[steve smith]

The grading system is based on a set of probabilities regarding the results of games between players with various grading differences. In theory, playing a lot of players with much lower grades gives a large number of small grading gains combined with an occasional large grading drop, but with an overall neutral outcome. From earlier contributions to this thread it's clear that there are people who don't believe the assumptions behind the calculations are correct.

Does FIDE or any other body carry out regular research to compare actual results with the outcomes predicted by theory?