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Beyond the Usability Lab by Donna Tedesco, Thomas Tullis, William Albert

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9.3. Longitudinal usability and user engagement testing for the comple- ex web site redesign of mtv.com

Traditionally, usability testing has been focused on testing single points in time to reveal a snapshot of the overall usability and user engagement performance of a Web site or other interface. A major benefit of longitudinal testing is that it provides series of interrelated ratings of a user experience extended over a significant period of time. These ratings provide very detailed direction for the enhancement of user experience design on both tactical and strategic levels. When employed in an AGILE[5]-like manner where studies are integrated into development “Sprints,” longitudinal testing provides the development team with rapid and highly ...

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