Simple activities are described which use paper clips and straws or a board to demonstrate the properties of the lever. (BB)

Discusses the use of laser spectroscopy in determining the presence of specific gaseous constituents. Three of currently used modes for laser detection of pollution are reviewed; (1) long-path measurements; (2) laser raman (differential absorption) measurements; and (3) optoacoustic detection. (HM)

Describes a currently used picosecond spectroscopy system capable of reliably recording picosecond events. Two areas of picosecond research are discussed: one concerns the interaction of electrons in fluids; the second, the primary events in vision. (Author/HM)

Describes an undergraduate experiment of research potential. The experiment cconsists of measuring the time of contact of a metal rod bouncing on a steel base as a function of the velocity of impact, length, diameter, and material of the rod. (GA)

Describes a thermocouple circuit used to measure Joule heating as well as Peltier heating and cooling for a copper-Constantan metallic junction. Shows how the Seebeck effect from a thermocouple can monitor the temperature condition of a junction with regard to input power and Peltier effect. (Author/GA)

Describes the various attempts, efforts and experiments that were carried out by the leading investigators in the field in their search for electromagnetic induction phenomena. (GA)

In an experiment conducted with southern white college students, a sex-neutral task was used to test male-female paired students for dominant behavior. Males were found to challenge their partners' opinions far more than females were, even though the task was not one culturally defined as either masculine or feminine. (GC)

In an experiment designed to determine the role of body part attitudes in self-concept, females demonstrated greater knowledge of their inner body and attached greater importance to their body parts than did males. However, inner body parts attitudes predicted self-concept for males, but not for females. (Author/GC)

Two experiments were conducted with rats to investigate variables responsible for the effectiveness of using a safe platform in two-way avoidance training and to evaluate the relative efficacy of several theoretical positions (conflict reduction, reinforcement, and freezing attenuation) that were offered to explain the wide differences in…

Attempts to provide empirical evidence for a functional correspondence between perception and imagination. Includes a perceptual-control condition in examining visual memory and imagery. (Author/RK)

Four experiments are reported investigating previous findings that speech perception interferes with concurrent verbal memory but difficult nonverbal perceptual tasks do not, to any great degree. (Editor)

Voluntary forgetting of a list of verbal items was tested under two conditions. Results show that both recall and recognition increase as a function of the spacing between the two occurrences under the Remember-Forget condition, but not under the Forget Forget-Remember condition. (Editor/RK)

Attempts to measure the involvement of an active memory process in the storage of the memory stimulus and to determine if such involvement is necessary for obtaining a Posner effect, which suggest that visual memory is not damaged by distractor tasks. (Author/RK)

The major focus of the three studies reported was the consequences of changing public conceptions of mental illness for the sufferer and his family. In two identically performed studies, two messages (one describing mental illness as a disease and the other as a product of social learning) were effective in changing beliefs. (Editor/RK)

There has been considerable interest lately in cases where instrumental conditionability appears to depend on the reinforcer used. Here the effects of Pavlovian conditioned stimuli (CSs)on golden hamster behaviors was observed. The intent was to see whether previously reported differences among the behaviors produced by food reinforcement and…