Two Piagetian tests which require manipulation, two conservation tasks, and the Longeot pencil and paper formal reasoning test were administered to 62 high school biology students. For all measures the males' mean level was higher than that of the females. (MLH)

The author examines Novak's position that science and mathematics educators should discard Piaget's theory of intellectual development in favor of Ausubel's theory of meaningful learning as a guide for teaching practice and research. (PB)

The general purposes of this study were to analyze responses on five Piagetian formal operational tasks in a test-retest situation to determine the extent to which taking a pretest effected scores on posttests and to determine task and examiner reliabilities. Significant test score gains on Piagetian tasks appeared to result from test-retest…