We studied economic choice behavior in capuchin monkeys by offering them to choose between two different foods available in variable amounts. When monkeys selected between familiar foods, their choice patterns were well-described in terms of relative value of the two foods. A leading view in economics and biology is that such behavior results from…

This article focuses on the mechanisms of the human brain which bring about body movements. Included is a discussion of the way in which the brain and spinal cord issue commands and receive signals. (Author/SA)

Describes a classroom demonstration for training pigeons and showing many kinds of behavior after a stimulus is given. (PS)

This article examines the mechanisms of adaptation and acclimatization of animals to cold temperatures. The differences between the two processes are explained and terms are defined. Graphs and drawings illustrate the article. (MA)

Author critically comments on D.W. Hamlyn's work on human learning which borrows from the classical philosophies of rationalism and empiricism. These lack a proper biological perspective for man and an adequate appreciation of man's social nature. The author discusses animal-like instinctive behavior and specifically social learning. For journal…

Presents an activity that allows students to observe crawling and swimming behavior in Lumbriculus variegatus, a freshwater oligochaete worm. Contains 12 references. (WRM)