Reports on new theories of the stress concept. One theory maintains that stress is nonspecific and can cause a variety of diseases through exhaustion of the body. Another theory claims that stress may be caused by the production of hormones which are specific to certain psychological stimuli. (MLH)

Reports on research investigating links between the psyche and somatic diseases. (CP)

Describes research conducted related to the disease of senility; indicates it is different from normal aging. (SL)

Discusses the conflicting evidence and points of view presented by scientists involved in research on the nature of memory. The research of one group supports a chemical basis for memory, while the other group presents evidence supporting an electro-physiological basis. (JR)