A review of recent studies about the use of human resources data in system design tradeoffs suggests that it is necessary for military psychologists to enter into the decision process of the design problem. The design engineer may study many alternatives, each of which should be evaluated in terms of human resources data which describe what the people of an organization can contribute, how much they cost, how available they are, how perishable they are, and how many of them are needed. In addition, the psychologists may supply such scientific data as human reaction times, visual perception, reach distance, etc. This kind of communication between military psychologists and the design engineer could lead to development of products which make less demand on human resources. (CH)