Table 5.

Significance statistics of switch cost in parity/magnitude and parity/vowel-consonant tasks.

Factors	Task context				Task sequence
	Parity/magnitude task		Parity/vowel-consonant task		Parity/magnitude task		Parity/vowel-consonant task
	F	${\eta }_p^2$	F	${\eta }_p^2$	F	${\eta }_p^2$	F	${\eta }_p^2$
TP	1.523	0.065	0.272	0.012	1.385	0.065	0.125	0.006
TG	0.173	0.008	4.864*	0.181	0.243	0.012	5.513	0.216*
TC	6.660*	0.232	3.059	0.122
TS					0.273	0.013	0.317	0.016
TP × TG	7.383*	0.251	0.077	0.003	7.890	0.283*	0.013	0.001
TP × TC	0.874	0.038	1.630	0.069
TG × TC	1.433	0.061	1.625	0.069
TP × TS					2.813	0.123	0.035	0.002
TG × TS					0.004	0.000	3.839	0.161
TP × TG × TC	0.504	0.022	2.170	0.090
TP × TG × TS					0.341	0.017	0.028	0.001

Note: TP, task predictability, TG, tDCS group; TC, task context; TS, task sequence. *p < 0.05.