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| Author: | Davis, F. D. Kottemann, J. E. |
| Title: | User perceptions of decision support effectiveness: The production planning planning experiments |
| Journal: | Decision Sciences
1994 : VOL. 25;1, p. 57-78 |
| Index terms: | DECISION SUPPORT SYSTEMS OPERATIONS MANAGEMENT PRODUCTION MANAGEMENT |
| Language: | eng |
| Abstract: | We hypothesize that what-if analysis, a prominen t feature of most decision support systems, creates an "illusion of control" causing users to overestimate its effectiveness. Two experiments involving a production planning task are reported which examine decision makers'perceptions of the effectiveness of what-if analysis relative to the alternatives of unaided decision making, and quantitative decision rules. Experiment 1 found that almost all subjects believed what-if analysis was superior to unaided decision making, although using what-if analysis had no significant effect on performance. Experiment 2 found that decision makers were indifferent between what-if analysis and a quantitative decision rule which, if used, would have led significant cost savings. Thus what-if creates an illusion of control. |
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