Wow this is an excellent point and really undermines the article conclusions. We should always be looking at unadjusted scores as well as a whole series of adjusted scores with a variety of methods.
Just grabbing one highly adjusted score and drawing conclusions solely off of that is not enough. It's really only giving you one piece of a very complex puzzle in the case of something like education scores.
Observational stats in social sciences turns out to be a lot like epidemiology and strongly held conclusions are hard won.
Just grabbing one highly adjusted score and drawing conclusions solely off of that is not enough. It's really only giving you one piece of a very complex puzzle in the case of something like education scores.
Observational stats in social sciences turns out to be a lot like epidemiology and strongly held conclusions are hard won.