An investigation of the effects of decisional guidance and cognitive ability on decision-making involving uncertainty data |
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| Affiliation: | 1. Universitat Pompeu Fabra, C. Roc Boronat, 138, 08018 Barcelona, Spain;2. ICREA, Pg. Lluís Companys, 23, 08010 Barcelona, Spain;1. Emergency Department, St George Hospital, Kogarah, New South Wales, Australia;2. Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia;1. Neurology and Psychiatry Department, Neurosurgery Division, “Sapienza” University, Roma, Italy;2. NESMOS Department Neurosurgery Department, “Sapienza” University, Roma, Italy;3. Neuroradiology Division, “Sapienza” University, Roma, Italy;1. SAP SE, Dresden, Germany;2. Database Technology Group, Technische Universität Dresden, Germany;3. SAP Labs, LLC, Palo Alto, USA |
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| Abstract: | In their roles as users and providers of uncertainty data, decision-makers are confronted with choosing among a plethora of data formats offered by the decision support systems on most personal computers, but are offered little in the way of decisional guidance for choosing the most effective display format. This research investigated when and why decisional guidance should be provided. We found that in tasks involving uncertainty data, the decision-makers were more accurate and responded faster when symbolic tasks were matched with tabular displays and spatial tasks were matched with graphical displays. We also found that when subjects were provided with both matched and unmatched display formats, field independent individuals were more accurate for both spatial and symbolic tasks. When decisional guidance restricted the display formats to match the task types, field dependency did not significantly affect performance. This suggests that cognitive ability or field dependency is not a factor when the mental representation formulated is consistent with the problem representation. |
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