Abstract
This paper presents results of a large evaluation of user perspectives on voice mail system performance as measured by message transmission delay. Over 1000 state employee respondents completed survey questions rating system speed (as presented in a standardized user interface questionnaire) and tolerance for message transmission delay in a variety of situational task contexts. Results of the study indicate that situation variables (message urgency, message context, and sender-receiver distance) affected user ratings of maximum acceptable transmission delay. In addition, user experience as measured by frequency of system use, but not length of exposure to the system, was a significant predictor of evaluations of what constituted acceptable voice mail message delivery performance. Users dynamically change their expectations and tolerances for “adequate” system performance based on system use and task demands. These results provide implications for future studies of diffusion of innovations and organizational implementation of new information technology systems.
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