The present research evaluated the refractorylike response decrement, as found in habituation of auditory evoked peripheral vasoconstriction in rabbits, to determine whether or not it represents a short-term habituation process distinct from effector fatigue or sensory adaptation. (Editor)

This field guide is designed to permit observers to identify the cetaceans (whales, dolphins, and porpoises) they see in western North Atlantic, including the Caribbean Sea, the Gulf of Mexico, and the coastal waters of the United States and Canada. The animals described are not grouped by scientific relationships but by similarities in appearance…

This study investigated the effects of a short period of severe protein malnutrition on subsequent growth and development in the squirrel monkey. A total of 12 newborn monkeys were fed a low protein diet from 2 to 8 weeks of age then rehabilitated by returning them to the 13 percent protein diet of the control group. Minimum amount of protein…

This ancient Cherokee story details an encounter the Indians had with a strange beast after they misused nature thereby learning to respect the Creator. (RTS)

Using rats and pigeons as subjects, the effects of varying amounts of reinforcement on the rate and temporal patterns of interim and terminal behaviors engendered by periodic feeding schedules were assessed in three experiments. (Author/KC)

Five experiments investigated the differential effects of shock punishment on nonconsummatory licking (dry licking) and lever pressing. Results support a motivationally based theory of punishment involving the role of incentive stimuli associated with the particular responses studied. (Editor/RK)

There are some important similarities between biological and societal evolution, but these similarities should not blind the enormous differences between them. Each system must be analyzed on its own merits and according to its own peculiar properties and principles. (Author/AM)

There is no clearly defined, universally accepted evolutionary theory that social anthropologists must accept. There has been great progress in the understanding of genetic mechanisms, but there are still major controversies. The most fundamental problem comes from postulating genes to account for behaviors. (Author/AM)

A review of play in nonhuman animals indicates that play increases with phylogenetic status, is important for mature social development in more advanced species, reflects intentional activity, and is essential for the development of tool-using strategies. (Author)

Describes the redwing blackbird, focusing on the period from March, when the redwings migrate to the northern United States to begin the breeding cycle, to September, when they start to flock for their migration south. Topics include physical characteristics, habitat, breeding, nest building, and migration. (JHZ)

Four-month-old rhesus monkeys were removed from their social group under three different conditions of perceptual isolation from their mothers and peers. Infant behavior was recorded and blood samples were obtained for analysis of plasma cortisol. Infants never showed signs of depression; their responses following separation were seen as attempts…

States that this book has a suspenseful plot and has appeal for anyone who understands cats and likes people. (EL)

Illustrates the use of nomenclature or binomial classification of animals, birds, and plants in using color, physical characteristics, numbers, places, direct meanings, behaviors, uses, and names for people. (ERB)

Several ideas for observing insects and soil animals in the classroom are provided. Also provided are: (1) procedures for making insect cages with milk cartons; (2) suggestions for collecting and feeding insects; and (3) techniques for collecting and identifying soil animals. (BC)

The renin-angiotensin system (RAS) maintains salt and water balance. Discusses functions of the RAS as defined in mammalian species, considering how the system arose and what its original function was. Also discusses where some of the changes occurred in the system (and why) as well as other topics. (JN)