Discusses the importance of humane education (i.e., the teaching of the principles of justice, goodwill, and respect for all living creatures) and offers suggestions for integrating humane education in the elementary school curriculum. (JG)

Links infrahuman and human research in an examination of sensory and experiential factors that regulate early mothering behavior. (PCB)

Presents an overview of an interdisciplinary animal behavior unit on wolves, including aspects of science, social studies, and language arts. Includes sources of wolf information. (MKR)

Daily administration of cocaine often results in the development of tolerance to its effects on responding maintained by fixed-ratio schedules. Such effects have been observed to be greater when the ratio value is small, whereas less or no tolerance has been observed at large ratio values. Similar schedule-parameter-dependent tolerance, however,…

In Experiment 1 with rats, a left lever press led to a 5-s delay and then a possible reinforcer. A right lever press led to an adjusting delay and then a certain reinforcer. This delay was adjusted over trials to estimate an indifference point, or a delay at which the two alternatives were chosen about equally often. Indifference points increased…

In the late winter, curriculum at school shifts from studying the environment to birds and mammals. After contacting the local chapter of the Audubon Society and researching a variety of indigenous species to feature, the Atlantic puffin was chosen as an introduction and main theme of study. Students learn how puffins once thrived off the coast of…

In an effort to provide an opportunity for her first graders to explore texture through an engaging subject, the author developed a three-part lesson that features fish in a mixed-media artwork: (1) Exploring Textured Paint; (2) Creating the Fish; and (3) Role Playing. In this lesson, students effectively explore texture through painting, drawing,…

In France, as well as in several other countries, the cell concept is introduced at school by two juxtaposed drawings, a plant cell and an animal cell. After indicating the didactic obstacles associated with this presentation, this paper focuses on the reasons underlying the persistence of these two prototypes, through three complementary…

A recent fear-potentiated startle study in rodents suggested that extinction was not context dependent when extinction was conducted after a short delay following acquisition, suggesting that extinction can lead to erasure of fear learning in some circumstances. The main objective of this study was to attempt to replicate these findings in humans…

Eye-blink conditioning involves the pairing of a conditioned stimulus (usually a tone) to an unconditioned stimulus (air puff), and it is well established that an intact cerebellum and interpositus nucleus, in particular, are required for this form of classical conditioning. Changes in synaptic number or structure have long been proposed as a…

Three experiments explored renewal in conditioned taste aversion after different amounts of extinction. In Experiment 1, three groups of rats received a single conditioning trial where a saccharin solution was paired with LiCl, followed by 3 extinction trials, and a two-trial test. Groups differed in the context where they received each of the…

Previous work on fish, frogs, and salamanders, showed the ability for estrogen (EE2) and anthropogenic endocrine disruptors to skew sex ratios and cause hermaphrodism. This study addressed the effects of estrogens on growth and development rates of African clawed frog tadpoles ("Xenopus laevis") during their gender determination stages. The…

This study explored changes in student attitudes toward school life following the 1992 Newfoundland groundfishery closure. Using data extracted from a provincial quality of school life (QSL) survey, means associated with students from a sample of fishing communities were compared with provincial means. Although community students had poorer…

Schedule-induced polydipsia in rats was developed by means of a fixed-time 60-s schedule of food presentation. The acute administration of d-amphetamine sulfate (0.1-3.0 mg/kg) produced a dose-dependent decrease in the rate of licking. D-Amphetamine shifted to the left the temporal distribution of adjunctive drinking within interfood intervals.…