a decade ago showing that people without the requisite knowledge to perform a task successfully also lacked the information and understanding required to know they were deficient, and in what ways.6 For instance, people who scored in the 12th percentile on tests of grammar and logic thought they were in the 62nd percentile. Not only did they overestimate their own performance; they also had difficulty assessing what they had answered correctly and where they had made mistakes, and they could not accurately recognize the relative competence of others. Fortunately, there is a simple solution to
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