## 4 Discussion
### Discussion of Major Quantitative Findings and Qualitative Feedback from the Users
#### 4.1.3 Perception of Internal Control
\begin{table}
\begin{tabular}{p{227.6 pt}} \hline \hline
**Qualitative question:** \\
**Were you impatient to use the hand gesture recognition/joystick control (e.g., yes, because using the hand gesture recognition/joystick control made me tired; yes, I hated to use the hand gesture recognition/joystick control)?** \\ \hline \hline Feedback for hand gesture recognition: \\ - Yes. \\ - Yes, I felt tired from the operation. \\ - Yes, it challenged my patience. \\ - Yes, it was painful. \\ - Yes, the low detecting performance for operating the system made me painful and impatient. \\ - Yes, I hated the hand gesture recognition. \\ - Yes, I often pressed the wrong buttons because of its bad detecting performance. \\ - Yes, but it was cool. \\ Feedback for joystick control: \\ - No, was not impatient. \\ - No, only for the hand gesture recognition. \\ - No, easy and enjoyable. \\ - Absolutely not, much easier than the gestural control. \\ - No, it was good, but not cool enough. \\ - No, it provided a regular performance. \\ - No, easy and simple. \\ - No, I loved the joystick controller so much. \\ - No, it was easy to operate, and I efficiently completed the tasks. \\ \hline \hline \end{tabular}
\begin{tabular}{p{227.6 pt}} \hline \hline
**Qualitative question:** \\
**Could you complete the tasks using the hand gesture recognition/joystick control if there were no time limitation, explanations, and auxiliary guidance?** \\ \hline \hline Feedback for hand gesture recognition: \\ - Yes, it was simple. \\ - Yes, it was easy to use the hand gesture recognition. \\ - Ok, if there were an instructional video on the official website, I think it’s not difficult. \\ - No, it made me spend time. And it was difficult for me to do the “choosing” gesture because the other fingers must be put away. To “choose,” I can only use the index finger and thumb or it made a poor recognition. \\ - I think it was difficult for me. \\ - No, I think it was possible only after I got trained to be familiar with the hand gesture recognition. \\ Feedback for joystick control: \\ - Yes, it’s simple. \\ - Yes, easy to use. \\ - Yes, simple operation. \\ - Yes, easy to understand the operation and buttons’ functions. \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Users’ Qualitative Feedback on ATU for Hand Gesture Recognition and Joystick Control. \begin{table}
\begin{tabular}{p{227.6 pt}} \hline \hline
**Qualitative question:** \\
**Could you complete the tasks using the hand gesture recognition/joystick control if there were no time limitation, explanations, and auxiliary guidance?** \\ \hline \hline \end{tabular}
\begin{tabular}{p{227.6 pt}} \hline \hline
**Qualitative question:** \\
**Could you** complete the tasks using the hand gesture recognition/joystick control if there were no time limitation, explanations, and auxiliary guidance?** \\ \hline \hline \end{tabular}
\begin{tabular}{p{227.6 pt}} \hline \hline
**Feedback for hand gesture recognition:** \\ - Yes, it was simple. \\ - Yes, it was easy to use the hand gesture recognition. \\ - Ok, if there were an instructional video on the official website, I think it’s not difficult. \\ - No, it made me spend time. And it was difficult for me to do the “choosing” gesture because the other fingers must be put away. To “choose,” I can only use the index finger and thumb or it made a poor recognition. \\ - I think it was difficult for me. \\ - No, I think it was possible only after I got trained to be familiar with the hand gesture recognition. \\ Feedback for joystick control: \\ - Yes, it’s simple. \\ - Yes, easy to use. \\ - Yes, simple operation. \\ - Yes, easy to understand the operation and buttons’ functions. \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Users’ Qualitative Feedback on POIC for Gesture Recognition and Joystick Control.