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ABSTRACT
The problem-solving abilities of casual users were compared to experienced users in a computer setting. It was hypothesized that casual users would benefit from reduced consistency with other applications. Experience was gauged with a questionnaire and empirical measures. Four interfaces were developed with varying degrees of similarity to Web browsers. Using a Web browser as a source problem, participants were tested with two of the experimental interfaces. The data indicated that the accuracy of casual users was equivalent across consistent and inconsistent interfaces but that the consistent interfaces had significantly higher latencies. The primary conclusions of the study are that performance for casual users is improved by superficially inconsistent interfaces and that their performance is equivalent to experienced users when a true analogue is present. Commonalities with familiar elements may be a hindrance.
Notes
Background. This research was conducted toward the completion of the PhD program in Experimental Psychology at the University of New Mexico.
Acknowledgments. Thanks to my dissertation committee members Dr. Mark McDaniel, Dr. Gordon Hodge, Dr. Timothy Goldsmith, and Dr. Barak Pearlmutter for their assistance in this research.
Author's Present Address. Kraig Finstad, Intel Corporation, M/S RA1-222, 2501 NW 229th Avenue, Hillsboro, OR 97124. E-mail: [email protected]
HCI Editorial Record. First manuscript received July 25, 2006. Revisions received April 2, 2007 and September 7, 2007. Accepted by Ruven Brooks. Final manuscript received January 31, 2008. —Editor