Discusses evidence for a permanent, measurable effect of early restriction on the physical growth of the brain, arguing that undernutrition has been considered for too long in adult terms as a series of deficiency diseases whose main consequences can be reversed on restoration of the deficient component. (Author/JM)

Describes a laboratory exercise in ethology that has proven to be successful in teaching the analytical power of biological observation to students at the University of Wisconsin. (JR)

Describes animal behavior experiments that can be easily performed by secondary school students. The experiments illustrate territorial behavior, social order, and exploratory behavior in Mongolian gerbils. (JR)

Describes two computer simulations of the predator-prey interaction in which students explore theories and mathematical equations involved in this biological process. The programs (for Apple II), designed for college level ecology, may be used in lecture/demonstrations or as a basis for laboratory assignments. A list of student objectives is…

Discusses the anatomy and physiology of the horseshoe crab (Limulus polyphemus). Includes comments on the habitat of and research studies using this organism. (JN)

Discusses mechanisms and functional intent of visual communication signals in iguanid/agamid lizards. Demonstrated that lizards communicate with each other by using pushups and head nods and that each species does this in its own way, conveying different types of information. (JN)

Describes how a behavioral system in Aplysia (marine snail) can be used to examine mechanisms of several forms of learning at different levels of analysis: behavioral, cell-physiological, ultrastructural, and molecular. Focusing on short-term sensitization, suggests how molecular mechanisms can be extended to explain long-term memory and classical…

Critically reviews the concept of "bonding," exploring its empirical basis and the implications that follow from its application in practice. Among the conclusions reached are that there is a tendency to oversimplify attachment phenomena and that the notion of a sensitive period for attachment has no direct empirical support. (RH)

Basic marine aquaria equipment, techniques for maintenance, specimens and food for the marine organisms are discussed. Several sources of specimens are included. (SA)

Describes a study using two genera of aquatic insects that demonstrates how nonlethal falls in oxygen concentration affect the rate of surfacing of bottom-feeding Coroxidae and how this affects their survival by increasing their proneness to attacks by surface-feeding Notonectidae. (CS)

Describes a five-week course in animal behavior for parents and their middle-school-aged children offered at the Minnesota Zoological Garden. Course activities included discussions, film viewing, demonstrations, zoo observations, and home studies of gerbils or zebra finches. Results of the course are discussed. (CS)

Instructions are given for care of the giant hissing cockroach, "Gromphadorhina portentosa" from Malagasy. Reproductive behavior is described, as well as development of the young roaches. (SA)

Presents natural history information on the zebra finch (Taeniopygia castanotis) for the biology teacher. Includes a section on care of the birds in the classroom and a method for constructing an inexpensive cage. (SA)

A rebuttle to the NSTA publication, "Safety in the Classroom" is given. Opinions of the author are substantiated by research and the references are included. (SA)