The judgment of confidence is an important form of metacognitive monitoring, which
refers to making a yes-no judgment of confidence for the answer by recalling or recognition.
Consensus refers to the proportion of individuals which choose the same answer in the same
item. The bigger the population proportion they select, the more consensus of item it exists.
The subjective self-consistency model of confidence hypothesize that the main clue of
judgment of confidence is self-consistency, including cross person consensus and inter person