If animals receive inescapable electric shocks, their subsequent avoidance-escape learning is poor. This phenomenon, which can be called "the interference effect", was studied in four experiments. (Editor)

Investigates how the inhibition and latency-reduction effects interact with each other and how they change with changes in the intensity of the startle-eliciting stimulus. (Author/RK)

The results of four experiments show that (a) recall superiority over recognition is reversed by the use of unrelated word pairs in the study list, and (b) the reversal of recall superiority leaves intact the phenomenon of recognition failure of recallable words. (Editor)

Investigates the effectiveness of cues and the differences between cued-recall and free association tasks. (Author/RK)

If half of the items in a list are repeated over a series of trials while the remainder of the items are new on each trial, recall of the repeated items is impaired. Two experiments examined the list context effect and a list differentiation interpretation was supported. (Editor/RK)

As part of a search for a unified theory of attention, observers detected letters in streams of digits under conditions of divided or selective attention for a period of 10 hours. The practice effects on the detectability of targets and on the response criteria used by observers were evaluated. (Editor/RK)

Three converging procedures were used to determine whether pictures presented in a rapid sequence at rates comparable to eye fixations are understood and then quickly forgotten. (Editor)

Tulving and Thomson's encoding specificity effect was examined as a function of grammatical class and concreteness of the cues. (Editor)

The typical bargaining paradigm is described and the limitations of general theories of bargaining are discussed. The results of relevant experiments are then reviewed and evaluated. (Editor/RK)

The present research represents an initial attempt to compare the results obtained using artificial information with results obtained in a typical semantic memory experiment. (Editor)

Examines an alternation effect and a repetition effect in a two-choice reaction time task. Two further experiments examine the roles of subjective expectancy and an automatic facilitation in determining these effects. (Editor/RK)

Language arts and science activities are combined in a program based on the adventures of an imaginary character. (DD)

Presents short articles on: Le Chatelier's principle, the Lennard-Jones potential, chemical oscillations, solvent extraction efficiency, and nuclear magnetic resolution spectroscopy. (MLH)

Describes a reproducible wet technique for determining lead content of gasoline quantitatively or semi-quantitatively in three hours. (MLH)

Describes a simple experimental setup in which the student can detect and record light spectra, study and test the concept of Bragg reflection, and measure the anisotropy of the index of refraction in a cholesteric liquid crystal. (MLH)