This article attempts to illustrate the value of a psychobiological approach to the study of a particular behavior; in this case, vocalization of infant primates following loss of the mother. (PCB)

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…

According to transfer index testing, chimpanzees who had been reared in restricted laboratory environments for the first two years of life were inferior in cognitive skills to wild born control subjects. Findings are discussed in terms of the role of early experience in cognitive development. (DP)

Discusses how snakes can be used for a science project thus helping students better understand snakes. (NQ)

Discussed is the confusion of the human perceptual world with the perceptual environment of other organisms and possible effects of anthropomorphism on ecological principles. (CP)

Examines possibilities of extinction of the human species as well as responsibility for promoting the continuance of evolution. Continuation will involve restoration, communication, creativity, population growth, prostheses, interdependence, and environmental design. (BL)

Describes experiments in conditioning, sensory processes, social behavior, imprinting, innate preferences for color and form, and discrimination learning suitable for secondary school students. Mealworms, crickets, and chicks are used as subjects. (AL)

This article presents the Abenaki version of their "discovery of the earth" and the origin of their one god, Katahdin. (RTS)

In three experiments the location of pigeons was monitored during 20-second illuminations of a right or left key presented in various temporal relationships with food delivery. In general, subjects approached a signal positively correlated with food and withdrew from a signal negatively correlated with food. (Editor)