Table 3.

Coefficients and corresponding t values and p values for 2-back accuracy (d′) and reaction time during and after stimulation. 

Predictors	Accuracy			Reaction time
	β	t value	p value	β	t value	p value
During stimulation
Stimulation (sham vs. anodal)	− 0.016	− 0.258	0.799	− 2.068	− 0.299	0.769
Age	0.162	2.223	0.038	22.041	1.256	0.224
Visit 1	− 0.172	− 1.234	0.231	− 3.995	− 0.244	0.810
Visit 2	0.025	0.202	0.842	− 16.325	− 1.140	0.269
Visit 3	0.019	0.152	0.880	26.069	1.775	0.093
Stimulation × age	− 0.001	− 0.023	0.982	− 0.144	− 0.038	0.970
After stimulation
Stimulation (sham vs. anodal)	− 0.016	− 0.485	0.634	− 8.478	− 1.545	0.128
Task (con vs. non-con)	0.049	1.453	0.162	11.058	2.005	0.050
Age	0.033	0.720	0.479	− 4.857	− 0.632	0.529
Visit 1	0.000	0.003	0.997	19.157	1.914	0.061
Visit 2	0.088	1.492	0.151	0.693	0.073	0.942
Visit 3	0.039	0.673	0.510	− 24.386	− 2.553	0.013
Stimulation × task	0.007	0.215	0.832	− 4.193	− 0.760	0.450
Stimulation × age	− 0.034	− 1.825	0.086	− 2.307	− 0.757	0.453
Concurrent × age	0.009	0.448	0.659	− 0.505	− 0.166	0.869
Stimulation × task × age	0.004	0.233	0.818	− 1.580	− 0.510	0.612

Significant results are printed in bold.