## 3 Results
### Objective 2: To Determine Cognitive Load Levels (Low, Medium, and High) in the Participating Groups
\begin{table}
\begin{tabular}{l c c c} \hline \hline  & \multicolumn{3}{c}{**Cluster**} \\ \cline{2-4}
**Indicators of Cognitive Load** & **1** & **2** & **3** \\  & **n = 22** & **n = 25** & **n = 1** \\ \hline Mean duration & 150.58 & 225.34 & 172.44 \\ Fixation point X & 1165.44 & 2315.30 & 994.84 \\ Fixation point Y & 997.23 & 2190.93 & 921.50 \\ Average pupil diameter & 6178.29 & 17,931.22 & 6156.46 \\ Saccade direction & 322,067.82 & 140,859.37 & 130,426.22 \\ Average velocity & 298,529.77 & 109,142.61 & 1,260,057.37 \\ Peak velocity & 406,223.39 & 147,998.56 & 1,398,529.00 \\ Saccade amplitude & 7562.57 & 3058.55 & 2861.72 \\ Average GSR & 1.64 & 2.31 & 1.47 \\ SCR count & 11.54 & 12.86 & 10.15 \\ Results test & 1 & 1 & 1 \\ \hline \hline \end{tabular} Note: GSR = Galvanic Skin Response, SCR = Skin Conductance Responses.  
\end{table} 
Table 6: Final cluster centres of \(k\)-means when \(k\) = 3 is used. Figure 6: Analysis of the focal points with respect to the mean duration classifier. Cluster 2 exhibits a longer mean duration compared to the virtual lab display. The mean pupil diameter is also larger, the mean velocity is lower, and the saccade amplitude and maximum velocity have intermediate values. Cross-tabulation was then performed to test the relationship between cluster membership and group of origin (see Table 8). A contingency coefficient of C = 0.60 \(p\) < 0.001 was found. All members of Group 3 are in Cluster 2. Members of Group 1 and 2 are distributed between Clusters 1 and 2. Objective 6: To Determine Whether There Are Significant Differences in the Indicators of Cognitive Load and Test Results Depending on the Type of Task and the Way the Task Is Presented (Visual-Auditory vs. Visual) in the Participation Groups  
First, the normality of the sample was examined with respect to the scores on the ACRA metacognitive strategies scale, a test that was applied before the intervention phase in the three groups. Because the sample size was less than 50 (n = 48), the Shapiro-Wilk test was applied, which, as Table 9 shows, indicated a normal distribution. Therefore, parametric statistics were applied to test Objective 6, which in this case was a two-factor multivariate analysis (MANOVA) with fixed effects and eta-squared effect size (\(\eta^{2}\)) (presentation type 1 (not having previously watched the lab vs. having done so) and presentation type 2 (visual-auditory vs. visual) (see Table 10). Significant differences from for presentation type 1 (prior watching vs. not) were found for all cognitive load indicators except for the average GSR and SCR count. The effect value was small for the cognitive load indicators average velocity, fixation point X, fixation point Y, and peak velocity, intermediate for the mean duration, saccade direction and saccade amplitude, and high for the average pupil diameter. No differences were found in the outcome test. No significant differences were found for presentation type 2 (visual-auditory vs. visual) or for the interaction of the two factors (presentation type 1 and presentation type 2). Descriptive statistics can be found in the Supplementary Materials in Table S4.