Building Research is urged to expand into areas concerned with human behavior, and a need for information on how people react physically and mentally, and how they perform their various tasks in environment created for them by the design professions, is cited. A research project at the University of Michigan is described, aimed at measuring the effects of all aspects of the environment on the learning process. Environment is considered in terms of--(1) atmosphere, (2) light, (3) sound, (4) spatial arrangement, and (5) social groupings. Human behavior is considered in terms of--(1) physiology and anatomy, (2) perception, (3) mental reactions, (4) performance, and (5) learning. (RH)