Sound, like light, travels in waves. Young students (grades K-4) learn about the amazing journey of sound--from the source that creates the sound to the mechanics of the ear that enable it to be heard. Children discover why sound needs a "medium" to travel, why there is no sound in space, and how certain animals are able to…

The present study examines the effects of two common stresses, noise and sleep loss, on task performance. (Author/RK)

This study investigates the influence on recognition memory of the perceptual organization of the learning material both at the time it is studied and when it is tested. (Author)

Author considered dynamic contrasts of music and proposed a philosophy that student musicians can readily understand. (Author/RK)

Discusses the causes and problems associated with increasing levels of noise pollution in urban societies. Particular attention is given to noise emanating from aircraft and to possible means of reducing this problem and its resulting psychological stress and social strain. (JR)

A discussion of the standards issued by the American National Standards Institute for audiovisual equipment used primarily for speech. (HB)

Research supported by a grant from the National Institute of Mental Health. (DD)

Revised version of a paper presented at the December 27, 1972 meeting of the Linguistic Society of America in Atlanta, Georgia; research supported by the National Science Foundation. (DD)

Research supported by a grant from the National Institutes of Health. (DD)

Describes a simulated experiment in which a ship's position is determined by the Doppler principle. The formulas derived for the real satellite system are given. (CC)

Research for this report supported by grants from the National Research Council and the Medical Research Council of Canada. (RS)