Did you ever hear about the study to see if confidence helped to elevate Math scores. They took a town in N Dakota all White. Then a school from WA DC full of blacks. The blacks where by far more confident. " We got dis yo" while the White kids had low confidence. The White out scored them by such a huge margin. Showing confidence has zero impact on math scores, or so they say . They left out the part of the being White and black.