Puberty culminates in a dramatic and visually apparent set of changes in each individual. Social and psychological effects of the meaning of these changes are an important component in understanding the significance of puberty for adolescents and their behavior. (CJ)

An attempt is made to find how polarity arises and is maintained, which is a central issue in development. It is a fundamental attribute of living things and cellular polarity is also important in the development of multicellular organisms and controversial new work indicates that polarization in mammals may occur much earlier than previously…

By three to four months of age, most babies placed on their tummies on a safe, warm surface push down with their arms and raise their chests, so that they can turn their heads to look about at the world around them. By five months, babies stretch both feet and hands upward in order to swipe at interesting mobiles placed overhead. At seven to nine…

The authors show how teachers can use nature explorations as a personal guide in implementing early learning standards. They describe five outdoor experiences of children in age groups ranging from 20 months to 5 years. A chart specifies which of the Nebraska state learning guidelines and Creative Curriculum goals the experiences meet, across the…

This is a brief preliminary report of an anthropometric measurement study of a group of Head Start children. The areas of primary concern were patterns of tooth eruption and basic head and body dimensions. Permanent Head Start personnel were trained to make the observations and measurements. The sample consisted of 148 children (76 boys, 72 girls)…

Selection of proper competitive activities for athletes is discussed in relation to the acknowledged fact that cellular adaptation is dependent upon the specific program employed in training for competitive events. (MB)

The article is intended to provide educators and parents with a definition of atlanto-axial instability and dislocation (abnormal increase of mobility of the two upper cervical vertebrae) discuss related factors to causation, identify visible symptoms, review pertinent recommendations from the medical community, and comment on the disorder's…

Findings indicate that the maturation age for dropouts was significantly earlier than the maturation age of those who graduated. (Author)

In a speech presented at the 45th annual convention of the American School Health Association, Chicago, 1971, author reviews some of the limited evidence and extensive speculations relating nutrition to these areas in human biology, life, growth, and learning. (Author/BY)

Infants living in various geographic locations are found to differ as much as 9 pounds in average body weight, 5.5 inches in average body length, and 2.5 inches in average chest circumference. (Author/WY)

This study was submitted in partial fulfillment of the requirements for the M.Ed. degree at the University of Texas.

Adolescent athletes may be at risk of restricted growth and delayed maturation when combining intense training with insufficient energy intake. Because catch-up growth commonly occurs with reduced training, final adult stature is generally not compromised. However, in athletes with long-term, clinically delayed maturation, catch-up growth may be…