The information system, developed at Sam Houston State University, has provisions for four types of data needed for personnel planning: (1) conventional bibliographic -- books, journals, government documents, etc.; (2) extant agency data -- information found in criminal justice agencies, such as technical reports and policy statements; (3) numeric -- data on employment and personnel, revenue and expenditures, crime reports, etc.; and (4) legal -- legal reference material, including administrative law, statutory law, and case law. The system is designed to accommodate four general types of decisional inquiries: inquiries on specific issues, complex problems, document content, and research. Part of the project involved the development of an Interactive Effects Model to provide a framework for human resources planning. The purpose of the model is to provide policymakers, administrators, and planners with a tool for examining the implications of various personnel actions. The use of the Interactive Effects Model is illustrated in decisions bearing upon volunteer recruitment, affirmative action, a hiring freeze, the use of part-time personnel, and recruitment and selection planning. System tests are applied to the following problems: (1) effect of unionization versus nonunionization on police wage determination, (2) an exploratory and descriptive analysis of grievance procedures, (3) a national analysis of law enforcement selection requirements, and (4) the impact of unionization on correctional officers. A technical documentation and a content guide to each of the eight volumes are provided. For other documents related to the project, see NCJ 81727 and NCJ 81915-21.