In autoshaping experiments, we quantified the acquisition of anticipatory head poking in individual mice, using an algorithm that finds changes in the slope of a cumulative record. In most mice, upward changes in the amount of anticipatory poking per trial were abrupt, and tended to occur at session boundaries, suggesting that the session is as…

This paper presents lists of books about pets and pet care, a list of pet theme ideas, an anticipation guide, and a list of community and professional resources. The 23-item list of books about pets and pet care (published between 1940 and 1994) is divided into sections on teacher's choices, nonfiction, recent books, and teacher resources. The…

The focus of this manual is the timber wolf and its experience in the United States. The activities are designed to enable students to gain a factual understanding of the timber wolf, question any misinformation they have learned regarding wolves, and learn to appreciate the wolf as a creature of nature rather than fear it as a creature of fairy…

Reports the evolutionary history of the nautilus and related molluscs. (BB)

Guinea pigs are presented as versatile classroom animals. Suggestions for animal behavior and genetics studies are given. Also included is information concerning sex determination and the breeding of guinea pigs, and hints on keeping these animals in the classroom. References and illustrations complete the article. (MA)

Traces the history of the antivivisection movement, examining issues related to the use of animals in studying the cause of rabies. Also discusses issues related to the current controversy over animal experimentation. (JN)

Contains a description of the organization of the Primate Research Centers and some of the research being conducted there. (CP)

The zoo's role in public education is analyzed. Despite good intentions, zoos may be creating animal stereotypes that are not only incorrect but that actually work against the interests of wildlife preservation. (BL)

Describes how teachers of young children can plan a field trip to an animal shelter as an educational experience in animal care and value concepts; also offers curriculum possibilities. (JH/BF)

Within-session delay-of-reinforcement gradients were generated with pigeons by progressively increasing delays to reinforcement within each session. In Experiment 1, the effects of imposing progressive delays on variable-interval and fixed-interval schedules were investigated while controlling for simultaneous decreases in reinforcer rate across…

The effects of two anorectic drugs, dexfenfluramine and phentermine, on food intake under different food-access conditions were examined. Experiment 1 compared the effects of these drugs on food intake under a progressive-ratio (PR) schedule and free-access conditions. Dexfenfluramine decreased food intake under both conditions, but the doses…

The origins of many of the basic concepts used in the experimental analysis of behavior can be traced to Pavlov's (1927/1960) discussion of unconditional and conditional reflexes in the dog, but often with substantial changes in meaning (e.g., stimulus, response, and reinforcement). Other terms were added by Skinner (1938/1991) to describe his…

Effects of prior exposure to the experimental chamber with levers present or absent and variable-time (VT) 60-s water deliveries arranged during one, five, or no 1-hr sessions were examined in rats during a 6-hr response-acquisition session in which presses on one lever produced water delivery immediately or after a 15-s resetting delay, and…

Recent progress in mouse genetics has led to an increased interest in developing procedures for assessing mouse behavior, but relatively few of the behavioral procedures developed involve positively reinforced operant behavior. When operant methods are used, nose poking, not lever pressing, is the target response. In the current study differential…