Page 130 - THE DUTCH TALKING TOUCH SCREEN QUESTIONNAIRE

Chapter 4
more participants with no experience in using mobile technology encountered problems during the completion of the DTTSQ than little experienced participants did (see table 4.2.5). Inexperienced participants encountered an average of 3 problems per person, while participants with little experience encountered an average of 2 problems per person. Within the subgroup of average/high experience participants only one person encountered one problem during completion (see table 4.2.5). Eleven participants encountered problem 8, “Pushing too hard or tapping too soft on the touch-screen causing the touch screen not to respond” multiple times (see table 4.2.4). In some cases participants looked startled after problem 8 occurred. In these cases researcher IT encouraged the participant to go on by kindly saying “try again”.
Table 4.2.5. Amount of participants encountering each problems per level of experience with using mobile technology
Problem No experience Little experience Average/high Total population n=9 n=11 experience N=24
n=4 153-8 21--1
3-1-1 411-2 521-3 644-8 71--1 8 6 5 - 11 93418 10 2 2 - 4 11 1 - - 1 12 1 1 - 2 13 - 1 - 1
Efficiency
The twenty-one participants who got to the end of the questionnaire had an average completion time of ten minutes and twenty-five seconds. Inexperienced participants needed more time than little experienced participants did, who in their turn needed more time than average/high experienced participants did (see table 4.2.6).
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