Proposes that a levels-of-processing analysis of encoding implies that (a) other things being equal, (e.g., task requirements), deeper information should be equally derivable from pictures and words; but (b) when picture-word differences do occur, they are encoding phenomena which result because task requirements generally favor more discriminable…

Deals with memory for lists of items. The literature is briefly reviewed, and the main difficulties for traditional explanations of serial order effects are noted. (RK)

When subjects learned paired associates that, on the study trials, consisted of a stimulus (cue) and its correct (target) response plus two other (distractor) responses from within the list, the presence of the distractor items interfered with learning, especially when overtly pronounced as opposed to silently studied. (Editor)

Three experiments were conducted in an attempt to develop an account of information loss based on the relationships among events occurring at input, during a retention interval, and at output. (Editor)

Two experiments examined the effect of concurrently holding 0, 2, 4, or 6 nouns in memory on the recognition of visual stimuli briefly presented to the left or right visual fields. (Editor)

A familiarity effect in these experiments is defined as a subject's ability to respond more rapidly to a familiar stimulus than to an unfamiliar stimulus. Evidence indicates that familiarity does not affect an initial encoding process, but it can affect a comparison process. (Editor/RK)

Described is an undergraduate laboratory experiment involving synthesis of chelidonic acid and its identification in plants. The experiment is offered as an ancillary topic for biology or chemistry classes. (SL)

Discussed is drag experiment for an intermediate level college mechanical physics course. Drag forces exerted on a falling object are examined. (Author/SL)

Describes two experimental apparatus which may be used to demonstrate the skin effect phenomenon. One apparatus shows the decrease of a magnetic field as it penetrates a thickness of metal; the other demonstrates the decrease with depth of current in a wire. (Author/MLH)

Describes 5 solar energy experiments that can be used in secondary school: flat-plate collector, solar thermoelectric generator, simple concentrators, solar cell, and natural storage of solar energy. (MLH)

Describes a set of student projects, each involving about 240 hours of laboratory time, covering the following topics: wind power monitoring, wind generator design, solar power, and the heat pump. (MLH)

Paul Friedberg designs playgrounds that provide opportunities for physical play, which develops motor skills; social play, the interaction between children; and cognitive play, the problem-solving process. (Author/MLF)

Describes an experiment that uses anodic stripping voltammetry as an alternative to atomic absorption for quantitating lead and cadmium leached from pottery samples. (MLH)

Describes an organic-biological experiment that illustrates an important chemical commercial process and the use of microorganisms as chemical reagents. (MLH)