Discusses the diversity and dynamic nature of the chemical components of postharvest crops. Also discusses the role of respiration and genetic control in chemical transformations leading to desirable and undesirable changes in the quality of edible plants after harvest. The role of enzymes in producing these changes is considered. (JN)

Presented are abstracts of five papers on teaching materials/methods presented at the 35th annual meeting of the American Physiological Society. Topic areas include expert system used as a teacher/consultant in hemostasis problems, computer assisted testing, and excitation/conduction properties of membranes as illustrated by the compound action…

Discusses the need for improvement in personnel selection systems for physically demanding jobs. Reviews the literature on the physiological background underlying selection strategies, assessment of human physical abilities, the measurement of physical requirements of jobs, and physical abilities personnel selection studies. (JAC)

Reviewed is an eight module course in respiratory physiology that utilizes audiovisual cassettes and tapes. The topics include the lung, ventilation, blood flow, and breathing. It is rated excellent in content and quality. (SL)

This textbook is designed as a pupil's book for use in the primary grades of schools, both public and private. It is so written that the subject-matter can be read and understood by pupils who are able to read well. While stating in simple language some elementary facts in anatomy and physiology, especial attention has been given to rules for the…

Discusses the reciprocal relationship between food and behavior, dealing with the subject as a two-way system; two parts of the brain are particularly involved, the hypothalamus and the cerebral cortex. (Author/JM)

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)

Briefly discusses the theory of fatigue, and describes ways in which the fatigue rate in humans can be measured in the classroom using a simple physiological instrument, the ergometer. (JR)

Reports a study determining whether significant differences in formant frequency are apparent when chronological age is compared with a measure of physiological age for children during the first six years. (TO)

Two experiments were conducted to examine the relationship between stress level and learned helplessness in human subjects. Experiment 1 subjected subjects to loud or moderate noise in order to induce differential stress. Experiment 2 was a partial replication of the first study using only loud noise. (Editor/RK)

Described are two cases of males, first seen as 2-month-old infants and followed until 6 years of age, having linear nevus sebaceous syndrome, an abnormal condition manifested by skin lesions or fatty tumors in a particular formation and neurological impairment; also, 11 cases now reported are reviewed. (Author/MC)