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2009
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(2009): Behavioral and emotional consequences of brief delays in human–computer interaction. In: International Journal of Human-Computer Studies 67 (7), S. 561-570. DOI: 10.1016/j.ijhcs.2009.02.004
Abstract: Evaluated negative effects of computer processing delays on user performance and emotional states. Specifically, it is proposed that unpredictable, sporadic, and random delays typical of modern computers inhibit the proficiency of human-computer interaction (HCI) and result in user performance decrements as well as negative emotional states such as job dissatisfaction, frustration and stress. The authors tested these effects by introducing a paradigm program designed to replicate the flow of user proficiency in the form of a computer game. The game was designed to provide a user interface (UI) under two conditions: a delay condition and a no-delay condition. 16 participants (age range 19-58 years) were recruited to play the game and respond to an in-game and postgame questionnaire to assess the effects of delays on their emotional states. Additionally, user reaction times (RTs) and error rates were measured. Results confirmed that user performance was significantly less proficient as a result of sporadic, brief delays. Error rates more than doubled and reaction times were prolonged by 33 ms for responses directly following the delay. Assessment of the questionnaires revealed that the participants felt annoyed by the delays and were frustrated in their attempts to achieve their goals. In conclusion, the findings suggest that UIs should be designed to minimize the occurrence of delays which hinder the proficiency of HCI. zitiert von 64
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