October 1983 SIGCHI BULLETIN Volume 15, 2-3 LACK OF GUIDANCE FOR DECISION AID INTERFACE DESIGN Jeffrey P. Schwartz* Pamela Jamar Honeywell Systems and Research Center 2600 Ridgway Parkway Minneapolis, Minnesota 55413 ABSTRACT Decision aids are being built by several research organizations. However, as noted by Wohl (1981), relatively few decision aids are in actual use. Problems with decision structuring methodology and failure to consult users during aid development are two reasons for this. A more important reason is the lack of general interface design guidelines directed specifically at decision aid designers. Three aspects of aid-user interaction--decision contingency, decision emergence, and the aid-user relationship--are issues which cannot be addressed by the decision structuring portion of aids but which require careful consideration during interface design. The development of a decision situation taxonomy which accounts for these issues is advocated as the starting point for general decision aid interface design guidance. INTRODUCTION Since World War II, during which decision making first came under close scrutiny, there has been growing concern that unaided human judgment and decision making (JDM) often leads to error-laden, if not harmful, man-machine interaction. Such concern has been bolstered by interaction between operators and increasingly sophisticated machinery on
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