Gives a history of traditional and audiolingual methods of language teaching. Reports on one Swedish and two U.S. long-term experiments. The two methods are found to be of about equal value. The most recent publications reveal a tendency to synthesize the two. (Text is in German.) (IFS/WGA)

Describes an experiment on Doppler effects using air cars on a linear air track and a homodyne Doppler radar system. (SL)

Describes an experiment for second year students designed to illustrate lectures devoted to electrochemistry and thermodynamics. (SL)

Describes a method for demonstrating harmonic motion which utilizes a low frequency oscillator and three oscilloscopes. (SL)

Hypothesis refining is the combining of two separate rules (conjunctive concept), the combination of which is more accurate than either rule alone. Each of 70 subjects was reinforced independently for either rule alone or their combination under one and only one of seven reinforcement conditions. Tests Verplanck's paradigm, a model for studying…

The mini-course offers unusual opportunities for teachers and schools that wish to experiment with new forms. Certain very significant characteristics have to be present in order for the mini-course to be productive and eight important ingredients are listed here. (Author/RK)

Two experiments with college males examined the relationship between moral judgment and compliance in a modified Asch paradigm. Moral judgment was assessed using Kohlberg's dilemmas in one experiment and with Rest's Defining Issues in the second experiment. (Editor/RK)

Discusses limitations and corrections to be made in physics experiments involving the investigations of drag and terminal velocity on spheres falling through a liquid in accordance with Stokes' law. (SL)

Whether a stimulus compound is separable or integral has predictable consequences for several human information processing tasks. The purpose of these experiments was to explore the implications of this distinction for research in animal learning and the development of learning theory. (Author/RK)

Three experiments contrasted subjects' memory for verbal and figural displays. Data are discussed in terms of a multiple coding model, which is suggested as a more fruitful approach than single-code models such as those proposed by Pylyshyn or Anderson and Bower. (Editor/RK)

Marks (1973) and Gur & Hilgard (1975) have reported success in predicting performance in visual-memory tasks from scores in a questionnare of self-rated vividness of imagery, i.e. the Vividness of Visual Imagery Questionnaire (VVIQ; Marks, 1973). These findings were disconfirmed in two experiments in which the VVIQ was used and vivid pictures…

Describes a simple activity designed to show the effects of leaching and evaporation on salts in the soil. (CP)

It is argued that research settings should be chosen with the whole experimental design in mind and that the availability of appropriate controls (groups or occasions for observation) should be as important as the suitability of the treatment group. (Author/AM)

The possibility that subjective contours are an artifact of brightness contrast was explored. Concludes that subjective contour and brightness contrast are distinct perceptual phenomena but share a dependency on the processing of edge information transmitted through the achromatic channels of the visual system. (Editor/RK)

Rats performed an intermittently reinforced operant response and received periodic presentations of a visual conditioned stimulus (CS) located either very near or far from the operant manipulandum. Findings suggest there are deficiencies in the general accounts of conditioned suppression that stress the motivational or emotional effects of…