Couldn't this difference be explained by the fact that the lessons were in English? If your language skills are poor, it's going to be hard to read the directio

Couldn't this difference be explained by the fact that the lessons were in English? If your language skills are poor, it's going to be hard to read the directions. You'll definitely be slower, which was the primary finding around language. That side, I wonder if early programming was much more math heavy, and higher level languages have successively reduced that need over time.