Chapter 2 46 Table 1 | Tasks and their scores Four users suggested that the layout color should be adjustable by the user. In the third clickable prototype the label of the button ‘settings’ is changed to ‘profile’. The alarm functionality has a standard icon attached to it, and setting the alarm itself is made more explicit. Conclusion and discussion The main contributions of this paper are: (a) emotion-enriched Personas Lisanne and Anita as a new approach to guide the empathic design, which contributes to a better understanding of the mental model of the target group; (b) use-case scenario describing the daily challenges of an emotional eater, namely Persona Lisanne, which can be used for designing other lifestyle support and eCoaching applications for this vulnerable target group; (c) a clickable prototype of the ‘Denk je zèlf!’ virtual eCoach user interface; (d) results of the first user evaluation with the usability expert via a heuristic evaluation. The usability of the second clickable visual prototype was tested with users via thinking Task no. & description No. of swipe/ taps T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Total grading 1 Getting a login 1 sw 1 tap 3 3 3 11 11 3 3 3 21 3 25 2 Logging in 2 taps 3 3 3 3 3 3 3 3 3 3 30 3 Read FAQ/ introduction 2 sws 1 tap 3 3 3 3 3 3 3 3 3 3 30 4 Send message to the virtual coach 3 taps 3 3 3 3 3 3 22 3 3 3 29 5 Adjust personal profile 2 taps 22 3 22 12 22 3 22 22 12 12 19 6 Set up a notification 3 taps 1 sw 23 3 23 2 3 23 3 23 13 3 23 7 Finish /close module 3 taps 3 3 3 3 3 2 14 3 3 3 27 8 Create item in diary 3 taps 3 3 3 3 3 3 14 3 3 3 28 Total time needed (min.) 3:34 2:41 2:21 2:17 3:03 4:38 4:37 3:35 5:36 2:48 1 Didn’t understand the concept ‘swipe’ 2 Tapped on several buttons to navigate 3 Couldn’t find a way to confirm choice 4 Didn’t follow instructions Grading scale 1 – 3: 1 = user failed to perform the task 2 = user performed the task but with errors 3 = user performed the task.
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