Professionalism is often viewed, in the management literature and in practice, as a desirable sought-after trait in employees and managers. This belief, however, does not consider a potential dark side of professionalism. A high self-concept of professionalism often coexists with a shallow...

For two periods an expert E announces his forecast of the state to a decision-maker D who chooses action. They disagree about the precision of the probability assessments. At the end of period 1 the state is observed. In the last period E makes announcements more extreme than his forecasts....