Capturing changes in decision-maker behavior

A challenge for the designers of decision support systems (DSSs) is that the introduction of a decision aid into a complex domain often generates new, unexpected user needs. In this paper, we will discuss how the iterative application of an experience-centered design methodology called DAISY, provides concrete methods for modeling these changes and identifying new system requirements caused by the introduction of the DSS. We will illustrate the iterative use of DAISY in the design, evaluation, and modification of Fox, a DSS intended to assist expert military users by helping them to generate and evaluate a broad range of plan options.