| Sumario: | The present study investigated whether there is a correlation between user performance and compliance with screen-design guidelines found in the literature. Rather than test individual guidelines and their interactions, the authors took a more holistic approach and tested a compilation of guidelines. Nine bibliographic display formats were scored using a checklist of eighty-six guidelines. Twenty-seven participants completed ninety search tasks using the displays in a simulated Web environment. None of the correlations indicated that user performance was statistically significantly faster with greater conformity to guidelines. In some cases, user performance was actually significantly slower with greater conformity to guidelines. In a supplementary study, a different set of forty-three guidelines and the user performance data from the main study were used. Again, none of the correlations indicated that user performance was statistically significantly faster with greater conformity to guidelines.
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