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The influence of product aesthetics and usability over the course of time: a longitudinal field experiment.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2012
Author Sonderegger Andreas, Zbinden Gerold, Uebelbacher Andreas, Sauer Juergen,
Project The utility of usability tests: An examination of factors that influence test outcomes
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Original article (peer-reviewed)

Journal Ergonomics
Volume (Issue) 55
Page(s) 840 - 853
Title of proceedings Ergonomics


The effectiveness of different forms of adaptive and adaptable automation was examined under low- and high-stress conditions, in the form of different levels of noise. Thirty-six participants were assigned to one of the three types of variable automation (adaptive event-based, adaptive performance-based and adaptable serving as a control condition). Participants received 3 h of training on a simulation of a highly automated process control task and were subsequently tested during a 4-h session under noise exposure and quiet conditions. The results for performance suggested no clear benefits of one automation control mode over the other two. However, it emerged that participants under adaptable automation adopted a more active system management strategy and reported higher levels of self-confidence than in the two adaptive control modes. Furthermore, the results showed higher levels of perceived workload, fatigue and anxiety for performance-based adaptive automation control than the other two modes.