Two experiments investigated word-frequency effects with modified recall and recognition testing conditions. The procedural modifications included introducing partial copy cues and including irrelevant partial copy cues (distractor cues) in recall, and eliminating distractors from recognition tests. Words with high background frequency (HF) were…

This research tested Paivio's (1971) proposal that pictorial and verbal memory codes interact with space and time. This "interaction hypothesis" states that pictorial memory codes are specialized for spatial structures and verbal memory codes are specialized for temporal structures. Tests this hypothesis by exploring several variations…

Describes an experiment in which a presumptively behavioral anxiety-management technique known as "cue-controlled relaxation" (Russell, Miller & June, 1975) was compared with a "deactivated" version of Borkovec's (1972) Avoidance Response Placebo treatment and with no intervention as means of reducing self-reported test…

Describes three experiments which investigated the mechanism underlying memory for movement-extent cues in preselection. Experiment 1 showed that memory for movement extent was better for subjects who were allowed to preselect their own standard. Experiments 2 and 3 examined the role of active movement in preselected and nonpreselected movements.…

Describes an experiment illustrating the absorption in the ultraviolet region to provide a simple spectrometric analytical method. (SL)

Presents details of demonstrations illustrating cathodic protection using a photovoltaic source and optical rotation. (SL)

The basic physical principles of dye lasers are discussed and used to analyze the design and operation of tunable dye lasers pumped by pulsed nitrogen lasers. Details of the design and construction of these dye lasers are presented. Some simple demonstration experiments are described. (BB)

Indicates some of the information that may be obtained from a binary solid-liquid phase equilibria experiment and a method to write a computer program that will plot an ideal phase diagram to which the experimental results may be compared. (Author/CP)

Describes the laboratory procedure suitable for an introductory organic chemistry procedure. (CP)

Discusses an experiment involving a linear chain of falling dominoes. The time for a chain of N equally spaced dominoes to fall is measured and a plot is made between the time and N. The experimental data are compared with the predictions of theory. (Author/GA)

Describes an experiment to verify the Compton collision formula and the angular dependance of the Klein-Nishina formula. Equipment used is a 1-mCi(137)Cs source, 2x2 in. NaI detector and a multichannel analyzer. Suitable for honor undergraduates. (Author/GA)

Describes a thought experiment using a general analysis approach with Lorentz transformations to show that the apparent self-contradictions of special relativity concerning the length-paradox are really non-existant. (GA)

This research was concerned with how the manner of encoding words for retention is affected by individual differences in text anxiety, and how various orienting tasks might interact with anxiety differences in determining retention. (Author/RK)

This science teacher's laboratory is a pond within walking distance of his school that provides a stimulating environment for exploring the natural world. With simple materials students practice making careful observations, taking measurements and compiling and graphing information for their science studies. They also extend their pond experiences…

Describes an apparatus and experimental procedure for quantitatively evaluating the activation energy associated with annealing color centers in glass. (MLH)