Visual Display Representation of Multidimensional Systems: The Effect of Information Correlation and Display Integrality

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Abstract
This study provides data regarding the use of object displays and schematic face displays to present dynamic, multivariate system information. Twelve subjects detected and diagnosed failures in a system whose variables were intercorrelated. Three visual, analog displays–a bar graph display, a pentagon, and a schematic face display–represented the system. These displays differed in the degree of integrality of their component features. Detection performance yielded a speed/accuracy tradeoff with little evidence of superiority for any of the displays. However, diagnosis performance showed a superiority of the more separable display. This superiority was attributed to showed a superiority of the more separable display. This superiority was attributed to the fact that diagnosis required subjects to focus attention directly on a single attribute, a focusing that benefitted from a display that separated the attributes from each other.

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