Ambitious executives often act like they know everything. In hindsight, some professed know-it-alls say they didn’t realize how little they knew about getting ahead.
Just about everyone has run into this breed of boss or colleague: They typically exclude others from decisions, cut off opportunities for collaboration, dominate meetings and resist criticism. Know-it-alls behave this way to inspire confidence and avoid looking weak, according to leadership coaches and workplace researchers.
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