# The Effect of 3D TVs on Eye Movement and Motor Performance
## 3 Results
### Motor Performance
#### 3.2.3 Error Rate  
The repeated measures ANOVA results in Table 12 revealed a significant main effect of index of difficulty (F\({}_{5,55}\) = 9.920, \(p\)-value = 0.000) and interaction between the environment and depth (F\({}_{2,22}\) = 6.428, \(p\)-value = 0.006). However, there were no significant interactions between the environment (F\({}_{1,11}\) = 0.084, \(p\)-value = 0.777), depth (F\({}_{2,22}\) = 0.296, \(p\)-value = 0.747), the environment and index of difficulty (F\({}_{5,55}\) = 1.245, \(p\)-value = 0.301),  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Hand Movement Time**} \\ \hline  & **Level** & **Mean (s)** & **Group \({}^{\mathbf{a}}\)** & **SD** & **F\({}_{\mathbf{n,m}}\)** & \(p\)**-Value** \\ \hline \multirow{3}{*}{Environment} & 2D Screen Displays & 1.539 & A & 0.371 & \multirow{3}{*}{F\({}_{1,11}\) = 15.879} & \multirow{3}{*}{\(p\) = 0.002} \\  & 3D Stereoscopic Displays & 1.689 & B & 0.451 & & \\ \hline \multirow{3}{*}{Depth} & 210 cm & 1.594 & A & 0.388 & \multirow{3}{*}{F\({}_{2,22}\) = 0.996} & \multirow{3}{*}{\(p\) = 0.385} \\  & 190 cm & 1.617 & A & 0.399 & & \\  & 140 cm & 1.673 & A & 0.467 & & \\ \hline \multirow{3}{*}{ID} & 2.8 bits & 1.160 & A & 0.247 & \multirow{3}{*}{F\({}_{5,55}\) = 144.887} & \multirow{3}{*}{\(p\) = 0.000} \\  & 3.3 bits & 1.403 & B & 0.266 & \\ \cline{1-1}  & 3.7 bits & 1.602 & C & 0.241 & & \\ \cline{1-1}  & 4.2 bits & 1.572 & C & 0.281 & & \\ \cline{1-1}  & 5.1 bits & 1.881 & D & 0.344 & & \\ \cline{1-1}  & 6.1 bits & 2.068 & E & 0.377 & & \\ \hline \multicolumn{3}{l}{Environment \({}^{\ast}\) Depth} & & & & \multicolumn{1}{c}{F\({}_{2,22}\) = 13.115} & \multirow{2}{*}{\(p\) = 0.000} \\ \hline \multicolumn{3}{l}{Environment \({}^{\ast}\) ID} & & & & \multicolumn{1}{c}{F\({}_{5,55}\) = 3.177} & \multirow{2}{*}{\(p\) = 0.014} \\ \hline \multicolumn{3}{l}{Depth \({}^{\ast}\) ID} & & & & \multicolumn{1}{c}{F\({}_{10,110}\) = 2.684} & \multirow{2}{*}{\(p\) = 0.003} \\ \hline \multicolumn{3}{l}{Environment \({}^{\ast}\) Depth \({}^{\ast}\) ID} & & & & \multicolumn{1}{c}{F\({}_{10,110}\) = 2.157} & \multirow{2}{*}{\(p\) = 0.026} \\ \hline \hline \end{tabular}
\end{table}
Table 10: Means, SDs, ANOVA, and Tukey HSD test results of hand movement time.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Index of Hand Performance**} \\ \hline  & **Level** & **Mean (bits/s)** & **Group \({}^{\mathbf{a}}\)** & **SD** & **F\({}_{\mathbf{n,m}}\)** & \(p\)**-Value** \\ \hline \multirow{3}{*}{Environment} & 2D Screen Display & 2.772 & A & 1.278 & \multirow{3}{*}{F\({}_{1,11}\) = 22.317} & \multirow{3}{*}{\(p\) = 0.001} \\  & 3D Stereoscopic Display & 2.539 & B & 0.520 & & \\ \hline \multirow{3}{*}{Depth} & 210 cm & 2.700 & A & 0.680 & \multirow{3}{*}{F\({}_{2,22}\) = 1.532} & \multirow{3}{*}{\(p\) = 0.238} \\  & 190 cm & 2.625 & A & 0.434 & & \\ \cline{1-1}  & 140 cm & 2.695 & A & 0.528 & & \\ \hline \multicolumn{3}{l}{Environment \({}^{\ast}\) Depth} & & & & \multicolumn{1}{c}{F\({}_{2,22}\) = 13.207} & \multirow{3}{*}{\(p\) = 0.000} \\ \hline \hline \end{tabular}
\end{table}
Table 11: Means, SDs, ANOVA, and Tukey HSD test results of index of motor performance.  
depth and index of difficulty (F\({}_{10,110}\) = 1.683, \(p\)-value = 0.094), and the environment, depth, and index of difficulty (F\({}_{10,110}\) = 0.456, \(p\)-value = 0.915).  
Finally, Table 13 shows the experimental results summary in this study. This table represents all main effects of environment, depth, and index of difficulty on eye movement measures. In addition, Table 13 also shows the main effects of environment, depth, and index of difficulty on motor performance.