Page 198 - THE DUTCH TALKING TOUCH SCREEN QUESTIONNAIRE

Chapter 5 Figure 5.5 Screenshot of the Smiling Touchscreen \[22\] Vargas et al. published an article in 2010 in which they described their version of the TT \[24\]. Their design differed from the designs of Hahn et al. \[15-21\] in that questions were presented in the form of video clips which participants could replay as often as needed, and a stylus was used to enter responses on the touchscreen \[24\]. No images of the tool of Vargas et al. have been published but, according to its description, it seems to hold the middle between the design of Hahn and Cella (see fig 5.2, 5.3 and 5.4) \[15, 17 and 19\] and Thumboo et al. (see fig. 5.5) \[25\]. USABILITY OF TALKING TOUCHSCREENS User-interface design None of the earlier-developed TTs were designed in collaboration with members of the low (health) literacy target population \[15-26\]. The prototypes were tested by patients and, in some cases, the feedback provided by patients led to adjustment of the original design, like adding the Drag function and + and - buttons for fine adjustment of the answer on a VAS to the design of Thumboo et al. \[25\]. However, in a co-design approach \[50\], like the one that was taken by the researchers of the current project and described in Chapter 3, collaboration with future users was taken a step further. In the current project, ten persons with low literacy were part of the design team. They helped create the TTSQ from the very beginning. Various methods were used to enable these designers to deliver their input into the design. This 198