Table 10.

Multiple regression for the interaction between orthogonal contrasts and training gain for the composite score of the cognitive performance.

Variable	B	SE	β
Overall cognitive performance (NN)
Linear interaction AB × C	0.104	0.058	0.106**
Linear interaction A × B	0.074	0.096	0.045

A, driving simulator group; B, cognitive training group; C, control group. AB × C, comparison of the average of the training effect for group A and B vs. the training effect for group C.

A × B, comparison of the training effect for group A vs. the training effect for group B.

^**< 0.01.