A positive effect of usability on task performance, interaction experience and acceptance was found.
Although the effect of usability on posttest performance is small in our study, it may have been attenuated by the relatively low internal consistency of the game usability scale we used, which had only three items.
Finally, actual use had a significant effect on perceived usability, perceived aesthetics, and user preference.
If more publishers should follow this trend it would have a very positive effect on the usability of mutation databases including an increase of the quality and amount of their content.
This research uses usability engineering principles to engineer four different wiki experiences for novice wiki users and measures the effect each has on usability, anxiety during editing and on anxiety about future wiki editing.
The weak point of this strategy is that it does not take in consideration the different requirements of real-time applications, for whom packets arrival delays may have catastrophic effects on the usability (e.g. for video streaming or online gaming).
Question design has a measurable effect on the overall usability and security of the PBAF approach, which needs particular consideration to address clarity, ambiguity, relevance, subjective, and objective information.
Enhanced Self-monitoring and Feedback had significantly higher ratings for 'helpfulness' (F = 4.39, p = 0.04), 'recommendation' (F = 5.02, p = 0.03) and 'satisfaction' (F = 6.608, p = 0.01) (Table 5 for main effects of intervention module on usability ratings and Supplementary Table 8 for interactive effects).
