## 3 Results
### CCT Effects on Productivity and Well-Being  
The responses for all the questionnaires for both groups from pre- and post-CCT are presented in Table 3. Mixed ANOVA showed that there were no significant main effects for group or time nor significant interaction effects. However, there was a non-significant trend for work productivity (\(p\) = 0.09). When this was evaluated further, it was revealed that there was no change in productivity between pre- and post-CCT for the intervention group (\(p\) = 0.49), but a significant decrease in productivity in the control group (\(p\) = 0.02) (see Figure 4).  
In addition, although the Cognitive Change Questionnaire did not show any significant differences between the intervention and control group, a further evaluation was carried out to evaluate the relationship between the CCQ and health scores for each of the groups. Here, there was a significant negative correlation between the CCQ and health score for the control group (\(r\) = \(-\)0.46, \(p\) = 0.04) but not for the intervention group: (\(r\) = 0.01, \(p\) = 0.98): control participants with higher self-evaluated cognitive issues also showed a lower self-evaluated health status (see Figure 5). There was also a trend for a negative correlation between the CCQ and well-being for the control group (\(r\) = \(-\)0.41, \(p\) = 0.06) but not for the intervention group (\(r\) = \(-\)0.07, \(p\) = 0.90).  
Figure 3: The average scores on the Verbal Fluency Letter test for participants in the intervention group (blue color) and control group (orange color) for pre- and post-CCT (error bars represent standard error of the mean).  
Figure 4: Line graph of the average productivity for participants in the intervention group (blue color) and control group (orange color) for pre- and post-CCT (error bars represent standard error of the mean).  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Questionnaire** & **Pre-CCT** & **Post-CCT** & \multicolumn{5}{c}{**RM ANOVA**} \\ \hline  & & & & **Time** & **Group** & \
\begin{tabular}{c} **Interaction** \\ **(Time \(\times\) Group)** \\ \end{tabular} &
\begin{tabular}{c} **Partial** \\ **\(\mathbf{\eta^{2}}\)** \\ \end{tabular} \\ \hline  & **M** & **SD** & **M** & **SD** & **_p_ Value** & **_p_ Values** & **_p_ Value** & **_p_ Value** \\ \hline Work productivity & & & & 0.086 & 0.433 & 3.015 & 0.09 & 0.070 \\ \hline Intervention & 118,740 & 17,620 & 118,660 & 24,750 & & & & \\ \hline Control & 117,700 & 28,910 & 106,400 & 38,310 & & & & \\ \hline Life Satisfaction & & & & 0.28 & 0.89 & 0.43 & 0.52 & 0.011 \\ \hline Intervention & 21.17 & 4.23 & 22.44 & 4.93 & & & & \\ \hline Control & 21.86 & 5.77 & 22.18 & 5.56 & & & & \\ \hline Well-being & & & & 0.73 & 0.48 & 1.34 & 0.26 & 0.034 \\ \hline Intervention & 14.33 & 4.72 & 15.00 & 4.50 & & & & \\ \hline Control & 14.23 & 5.51 & 13.00 & 6.06 & & & & \\ \hline Job satisfaction & & & & 0.74 & **0.03** & 0.46 & 0.50 & 0.014 \\ \hline Intervention & 37.00 & 9.83 & 38.22 & 8.85 & & & & \\ \hline Control & 44.12 & 9.84 & 43.71 & 6.85 & & & & \\ \hline Health & & & & 0.95 & 0.33 & 0.57 & 0.46 & 0.015 \\ \hline Intervention & 11.11 & 1.37 & 12.37 & 4.07 & & & & \\ \hline Control & 11.45 & 3.88 & 10.41 & 3.13 & & & & \\ \hline \end{tabular}
\end{table}
Table 3: Means (M) and standard deviations (SD) of the productivity and well-being questionnaires of the intervention and control group for pre and post CCT.  
On a four-point scale, a one-sample \(t\)-test showed that participants from the intervention group were slightly more satisfied than average with the CCT (\(t=-1.68\), \(p=0.11\)) and highly satisfied with the administration of the CCT (\(t=-3.34\), \(p=0.004\)).