 Self-doubt is a special case of responding to higher-order evidence. Not all evidence about our evidence arises from self-doubt because not all such evidence is about oneself, as we will see below. Also, representing self-doubting situations as responding to evidence about my evidence takes information about my capacities to be important just insofar as it provides evidence that I have either incorrectly identified my evidence or incorrectly evaluated the support relation between my evidence and my conclusion. For example, in the case of the doctor above who receives evidence that she is severely underslept, the reason she should reconsider her diagnosis is because this is evidence that she might be wrong either in reading the lab tests or in thinking that the evidence of lab tests and symptoms supports her diagnosis. By contrast the fourth approach below via calibration does not see the implications of self-doubt as necessarily proceeding via evidence about our evidence or evidential support.