Recently a number of experiments have been performed whose aim was to compare programming language features to determine which programming language features programmers found difficult to use. This paper examines these experiments in light of the evidence that programming language designers would find most useful. (Author)

Methods and optics of perceiving color in a black-and-white grating are described. A sample grating which produces the effect is included. (JN)

Experiments with two distinct collections, using three levels of indexing exhaustively for both documents and requests, show that substantially the same performance is obtained for very different levels of document indexing, if suitable choices are made of request level. (6 references) (Author)

Reports on an experimental study designed to investigate the relationship between two factors commonly regarded as components of the Hawthorne Effect on pupil performance and on intellectual task. These factors are (1) direct cue, or awareness of experimentation, as represented by an announcement that pupils were the subjects of an experiment; and…

Suggested in this article are experiments that can be used in the classroom, are inexpensive, need simple equipment, and are easy for the children to conduct. (RB)

A review of Experiments in Primary Education: Aspects of Project Follow-Through" (Harcourt Brace Jovanovich), by Eleanor E. Maccoby and Miriam Zellner. A preliminary report of Project Follow-Through, the U.S. Office of Education-sponsored project designed to continue selected experimental preschool programs through the primary grades of…

Science experiments that can be done at home are described and illustrated. (DB)

The history of the near-success of the 1958-59 experiment with cataloging-in-source and the subsequent refusal of the library community to accept its failure are punctuated by data from a recent survey regarding attitudes toward prepublication cataloging. (Author)

For steady state resting and mild, steady state exercise conditions, the Haldane transformation is valid and technically preferable to direct calculations of V02. (PBS)

Replies to an article in "Human Communication Research" (v14, n4), "Item Desirability Effects in Compliance-Gaining Research: Seven Studies Documenting Artifacts" by Brant R. Burleson, Steven R. Wilson, Michael S. Waltman, Elizabeth M. Goering, Teresa K. Ely, and Bryan B. Whaley. (MS)