How do they/you remove the confound of becoming more conservative vs less confident, or do they assume that overconfidence and being conservative are opposites?

I might be motivated to be more conservative because I have a reputation to protect, but not actually be less confident. This may have an effect just as much as because I am more experienced.

I may also have just learned not to express my overconfidence interpersonally, while still exhibiting it in practice. Expressing appropriate levels of confidence is a skill, not just the absence of overconfidence.

I can’t access the paper currently.