She is trying to avoid "overconfidence" error in thinking.
The overconfidence effect is watched when individuals' subjective trust in their own particular capacity is more prominent than their goal (real) execution. It is much of the time estimated by having test members answer general information test questions. They are then requested to rate how sure they are in their answers on a scale. Overconfidence is estimated by ascertaining the score for a man's normal certainty rating in respect to the real extent of inquiries addressed accurately.
