However, definitive support for hypotheses H3 and H6 can only be claimed if the path coefficients themselves are significantly different between the low and high levels of task variability and task difficulty considered separately.
In other words, are the slope coefficients from equation (1) the same or different in each case?
Support for a difference in the path coefficient p21 was found (via the Chow test) only between the low and high task difficulty sub-samples but not for the task variability sub-samples.
This suggests that providing MRI via MACSs change is more advantageous under conditions of high task difficulty, thus reinforcing the support for hypothesis H6.