||Information technology (IT) provides organizations with the opportunity to improve operational efficiencies, to aid in managerial decision making, and more recently, to gain competitive advantage through innovative and creative applications. Information technology includes "the broad range of technologies involved in information processing and handling, such as computer hardware, software, telecommunications and office information, and includes such 'technologies' as new systems development methodologies" (Huff and Munro, 1987, p. 327-8). The pace of technological advances has increased, which in turn has resulted in rapid changes in the capabilities and cost of information technology. In order to keep abreast of such rapid changes, it has become essential for organizations to attend to the identification, assessment and adoption of new information technology. Information technology assessment and adoption (ITAA) is viewed as "a significant challenge facing information systems managers in this decade" (Raho et al., 1987, p. 47). Assessment and adoption has been defined as "the organizational policies, strategies, processes, and tasks employed, either explicitly or otherwise, by an organization in its efforts to identify, acquire, and diffuse appropriate information technology" (Huff and Munro, 1987, p. 328). Factors associated with the diffusion process for information technology must be well understood in order to promote effective management of that process. Indeed, "the key to effective technological assimilation is exercising control over its diffusion through the organization" (Raho et al., 1987). A voluminous amount of research addressing diffusion has been conducted in a variety of disciplines (Rogers, 1983). While the findings gained through this previous research may well be applicable to the field of MIS, the difference in the nature of the involvement required of an individual in using information technology warrants investigation. This study examines the applicability of the Rogers' (1983) model of diffusion. A specific DSS, which supports managerial decision making for a particular problem domain, is the information technology examined through a controlled experiment. The study focuses on the factors associated with the diffusion of a specific DSS among individuals, as well as the decision making outcomes, in an ill-structured decision environment.