Assuming what you say here is true (which in my opinion is a pretty high leap), one could then ask why those biases exist in the first place. I expect authorita

Assuming what you say here is true (which in my opinion is a pretty high leap), one could then ask why those biases exist in the first place. I expect authoritarian states to enable corruption but it's the contrary in the case of Singapore. Why? Because I doubt it boils down to the salary of the ministers. On a side note, it might be interesting to see the evolution of this index over the years for any given country; that might lead to interesting conclusions on the bias confirmation you're talking about!