Then how do you explain that there are systematic differences for certain film genres? The article has a graphic on it. The differences are by no means uniform.

Then how do you explain that there are systematic differences for certain film genres? The article has a graphic on it. The differences are by no means uniform. Crowds love Action and Thriller, critiques History and Documentary. D'oh. That is not to say there is no selection bias. But the population of critiques and film-going crowds are almost certainly different in education, lifestyle etc. That has certainly an effect on the observed discrepancies.