Examines five to seven year olds' assumptions about the experiential connotation of "I know that's X." Two experiments compare two groups of children (five and six year olds, six and seven year olds) who were asked to choose between items and asked whether they were sure or whether they knew they had made the right choice. (21 references) (GLR)

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…