The psychological concept of cascading chains of responses is introduced as an explanatory mechanism for the enhancement of acquisition of extended trends and sequences in science and the efficacy of using verbal models in science teaching. The author suggests that the validity of his theory can be tested empirically by using suitable multi-trial…

Author advances a program for studying human freedom which nonetheless adheres to the criteria for scientific objectivity. (Author/MB)

Presents genetical and biochemical data to show that the conclusion presented by Dyer (EJ 036 108) is by no meas settled. Evidence to support the concept: evolution by selectively neutral polymorphisms is inconclusive. (AL)

The answers from test questions on circular motion are analyzed in terms of the misunderstandings of resultant force, kinematics, interaction, and centrifugal force. (DS)

Reviews some major concepts in quantum mechanics and advocates less stress on quantum mechanics and thermodynamics in introductory chemistry. Supports diversity in chemical education. (PR)

Presents the procedures, and findings of a study designed to identify principles in astronomy, geology, meterology, oceanography and physical geography pertinent to general education programs in junior high schools. (LC)

The Problem-Solving Skills Test" developed by the authors can be used to evaluate student abilities, regardless of what science programs the student has studied. Also, it can be used to evaluate whether the objectives of new elementary school science curricula have been attained. Major limitation is the lack of external criteria for determining…