This study aims to investigate about the existence of a graphical facilitation effect on probabilistic reasoning. Measures of undergraduates' performances on problems presented in both verbal-numerical and graphical-pictorial formats have been related to visuo-spatial and numerical prerequisites, to statistical anxiety, to attitudes towards…

Effects of immediate and delayed feedback on learning were studied in 2 experiments involving 120 undergraduate students. Subjects answered 90 general information multiple-choice items on 2 different occasions 1 week apart. Subjects rated their confidence in their responses. Results provide support for the Kulhavy and Stock model and the…

Studies in psychology and clinical decision making have shown that research subjects and physicians are often overconfident in the accuracy of their judgments. In these studies, groups of 20 first-year and 27 third-year osteopathic medical students at the Ohio University College of Osteopathic Medicine (Athens) were slightly underconfident in…