Page 69 - THE DUTCH TALKING TOUCH SCREEN QUESTIONNAIRE

Development of the Dutch Talking Touch Screen Questionnaire
that were expressed during the first session. Seven students (2 male, 5 female) participated. The session was facilitated by two health scientists, an interaction designer, two software developers and the course teacher. The session duration was two and a half hours. In particular, the items of the questionnaire, the order of the items and the need for support were discussed.
4.3.2 Design phase:
Two user walkthroughs. The goal of the first user walkthrough was to get feedback on different designs on the number and the order of questions and different forms of support (when and how). Of the eight persons who participated, four were asked two by two to give feedback on different visuals of potential designs to determine what functionalities and ‘look and feel’ they preferred. The other four were asked two by two to give feedback on different scenarios considering the order and number of steps in which questions were asked.
During the second user walkthrough, six participants were asked to give feedback on a click-through mock-up version of the DTTSQ. The goal of this session was to see if earlier information given by the users was interpreted correctly and transferred adequately to the design of the DTTSQ.
4.3.3 Implementation phase: usability testing. Based on results of the user walkthroughs, the design of the DTTSQ was created and implemented on a touch pad (see Fig. 3.3 for a screenshot of the help function and buttons; an overview of final DTTSQ screens is provided in Fig. 3.4 - Fig. 3.9). The usability of this version of the DTTSQ was tested by four students who had not taken part in earlier sessions. Each participant was asked to use the DTTSQ individually and autonomously and to meanwhile think aloud. Two researchers observed the actions of the participants and made notes on how they used the DTTSQ. Afterwards, the researchers discussed their observations and questions with the participant. Then, they asked the participant to give his/her opinion on the usability of the DTTSQ and to give suggestions for improvement. Finally, participants were asked to also test functionality that had not been used spontaneously, in particular the help function.
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