Speaking up behavior and cognitive bias in hand hygiene: Competences of German-speaking medical students.

Although partially limited by the selection bias, this study confirms the overconfidence-effects demonstrated in post-graduates in other settings and different professions. The independence from study progress suggests, that the effect occurs before start of the academic course with need for educational intervention at the very beginning. Qualitative data showed that used methods are insufficient and contradictory work place behavior in hospitals are frustrating. Even 20 years after "To err is human", work place culture still is far away from the desirable.