Describes author's use of a three foot long tube, open at both ends, to exemplify that his highest falsetto note is lower than his lowest whistled note. (CC)

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

Describes experiments on flash photolysis and relaxation kinetics for college students using any standard photographic flash. List of experiments with explanations are included. (PS)

The Ranschburg phenomenon is a process of memory interference caused by confounding of similar elements in discretely learned materials. (RS)

Describes use of video equipment to record laboratory experiments which can then be replayed for closer analysis of results. (PS)

Behavior, incentives, and education programs were researched as factors relating to littering. Experiments in theaters, forest campgrounds, and hiking and dispersed car camping areas indicate incentive systems are necessary and feasible for curbing litter problems. (BL)

Discusses the development of payment by results, an educational system practiced in England and Wales during the latter half of the nineteenth century. (Author/RK)