# The Effect of 3D TVs on Eye Movement and Motor Performance
## 3 Results
### Motor Performance  
#### 3.2.1 Hand Movement Time  
Table 10 presents the means, SDs, ANOVA, and Tukey HSD test of hand movement time. The mean average of hand movement time increased in stereoscopic displays. The ANOVA shows there is significant difference in the environment (F\({}_{1,11}\) = 15.879, \(p\)-value = 0.002). The Tukey HSD test revealed a significant difference occurred between hand movement time in screen displays and stereoscopic displays. A longer hand movement time occurred with the object in stereoscopic displays. The mean of hand movement time increased with depth. When the object was close to participants' eyes, it resulted in a longer hand movement time. However, ANOVA results show that there is no significant difference for different depth level (F\({}_{2,22}\) = 0.996, \(p\)-value = 0.385). The index of difficulty affected hand movement time (F\({}_{5,55}\) = 144.887, \(p\)-value = 0.000). The result of the \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & \multicolumn{6}{c}{**Revisited Fixation Duration**} \\ \hline  & **Level** & **Mean (s)** & **Group \({}^{\mathbf{a}}\)** & **SD** & **F\({}_{\mathbf{n,m}}\)** & \(p\)-Value** \\ \hline \multirow{3}{*}{Environment} & 2D Screen Displays & 0.974 & A & 0.274 & F\({}_{1,11}\) = 6.122 & \(p\) = 0.031 \\  & 3D Stereoscopic Displays & 1.114 & B & 0.401 & F\({}_{1,11}\) = 6.122 & \(p\) = 0.031 \\ \hline \multirow{3}{*}{Depth} & 210 cm & 1.027 & A & 0.358 & \multirow{3}{*}{F\({}_{2,22}\) = 0.604} & \multirow{3}{*}{\(p\) = 0.556} \\  & 190 cm & 1.042 & A & 0.341 & & \\  & 140 cm & 1.101 & A & 0.353 & & \\ \hline \multirow{3}{*}{ID} & 2.8 bits & 0.762 & A & 0.216 & \multirow{3}{*}{F\({}_{5,55}\) = 47.224} & \multirow{3}{*}{\(p\) = 0.000} \\  & 3.3 bits & 0.947 & B & 0.234 & & \\ \cline{1-1}  & 3.7 bits & 0.960 & B & 0.270 & & \\ \cline{1-1}  & 4.2 bits & 0.967 & B & 0.265 & & \\ \cline{1-1}  & 5.1 bits & 1.324 & C & 0.318 & & \\ \cline{1-1}  & 6.1 bits & 1.303 & C & 0.388 & & \\ \hline \hline Environment \({}^{\star}\) Depth & & & & & F\({}_{2,22}\) = 12.463 & \(p\) = 0.000 \\ \hline \hline Environment \({}^{\star}\) ID & & & & F\({}_{5,55}\) = 1.955 & \(p\) = 0.100 \\ \hline Depth \({}^{\star}\) ID & & & & F\({}_{10,110}\) = 1.035 & \(p\) = 0.419 \\ \hline Environment \({}^{\star}\) Depth \({}^{\star}\) ID & & & & F\({}_{10,110}\) = 1.841 & \(p\) = 0.062 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Means, SDs, ANOVA, and Tukey HSD test results of revisited fixation duration. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{6}{c}{**Accuracy**} \\ \hline  & **Level** & **Mean (\%)** & **Group \({}^{\mathbf{a}}\)** & **SD** & **F\({}_{\mathbf{n,m}}\)** & \(p\)-Value** \\ \hline \multirow{3}{*}{Environment} & 2D Screen Displays & 94.443 & A & 4.432 & F\({}_{1,11}\) = 8.559 & \(p\) = 0.014 \\  & 3D Stereoscopic Displays & 92.220 & B & 6.820 & & \\ \hline \multirow{3}{*}{Depth} & 210 cm & 92.452 & A & 6.331 & \multirow{3}{*}{F\({}_{2,22}\) = 2.131} & \multirow{3}{*}{\(p\) = 0.143} \\  & 190 cm & 94.160 & A & 5.020 & & \\ \cline{1-1}  & 140 cm & 93.383 & A & 6.036 & & \\ \hline \multirow{6}{*}{ID} & 2.8 bits & 92.489 & A & 5.320 & \multirow{6}{*}{F\({}_{5,55}\) = 13.799} & \multirow{6}{*}{\(p\) = 0.000} \\  & 3.3 bits & 91.904 & A & 4.938 & & \\ \cline{1-1}  & 3.7 bits & 96.071 & B & 5.772 & & \\ \cline{1-1}  & 4.2 bits & 96.280 & B & 3.377 & & \\ \cline{1-1}  & 5.1 bits & 90.098 & A, C & 5.248 & & \\ \cline{1-1}  & 6.1 bits & 93.148 & A & 7.283 & & \\ \hline \hline Environment \({}^{\star}\) Depth & & & & F\({}_{2,22}\) = 4.785 & \(p\) = 0.677 \\ \hline Environment \({}^{\star}\) ID & & & & F\({}_{5,55}\) = 23.500 & \(p\) = 0.620 \\ \hline Depth \({}^{\star}\) ID & & & & F\({}_{10,110}\) = 8.759 & \(p\) = 0.928 \\ \hline Environment \({}^{\star}\) Depth \({}^{\star}\) ID & & & F\({}_{10,110}\) = 28.604 & \(p\) = 0.354 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Means, SDs, ANOVA, and Tukey HSD test results of eye fixation accuracy.