We studied the impact of large screens and of two promising visual integration techniques, elision and connecting lines, which can decrease the cognitive efforts of designers to read diagrams. We conducted a laboratory experiment using 84 computer-science students to investigate the impact of these techniques on the accuracy of the subjects' search and recall with entity-relationship diagrams and data flow diagrams.Both vertical and horizontal searches were conducted on a moderately complex information system model that consists of multiple diagrams. We also examined i n t e r a c t i o n s . . . n o v e m b e r + d e c e m b e r 2 0 0 3
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