. 2014 Sep 3;5:954. doi: 10.3389/fpsyg.2014.00954

Table 3.

Mean statistics and findings of regression analyses for participants' performance in the Simon switching task.

		Mean	SD	R² change	L1 Proficiency			L2 Proficiency
					*beta*	t₍₉₃₎	p	*beta*	t₍₉₃₎	p
Overall	RT	864	335	0.12^*	−0.28^*	2.44	0.01	−0.12	1.08	0.15
	Error	27	15	0.01	−0.09	0.73	0.23	−0.04	0.35	0.37
	μ	565	198	0.06^*	−0.15	1.27	0.11	−0.15	1.33	0.10
	σ	118	86	0.05^*	−0.13	1.04	0.15	−0.14	1.17	0.12
	τ	301	214	0.10^*	−0.30^*	2.55	0.01	−0.04	0.37	0.36
All trials in the pure block	RT	814	303	0.12^*	−0.28^*	2.42	0.01	−0.14	1.26	0.11
	Error	21	16	0.05^*	−0.19	1.53	0.07	−0.06	0.56	0.29
	μ	560	184	0.06^*	−0.17	1.45	0.08	−0.13	1.19	0.12
	σ	113	74	0.05^*	−0.18	1.45	0.08	−0.10	0.83	0.21
	τ	257	188	0.11^*	−0.29^*	2.40	0.01	−0.10	0.84	0.20
All trials in the mixed block	RT	981	451	0.08^*	−0.26^*	2.20	0.02	−0.06	0.56	0.29
	Error	29	16	0.001	−0.02	0.14	0.45	−0.02	0.16	0.44
	μ	672	324	0.03	−0.15	1.20	0.12	−0.05	0.43	0.34
	σ	136	128	0.01	−0.07	0.54	0.30	−0.04	0.33	0.37
	τ	315	271	0.08^*	−0.27^*	2.29	0.01	−0.04	0.36	0.36
Switch trials in the mixed block	RT	1012	483	0.08^*	−0.27^*	2.26	0.02	−0.04	0.36	0.36
	Error	33	17	0.001	0.02	0.16	0.44	0.02	0.14	0.45
Nonswitch trials in the mixed block	RT	951	438	0.08^*	−0.24^*	2.05	0.02	−0.07	0.64	0.26
	Error	26	17	0.01	−0.05	0.39	0.35	−0.05	0.41	0.35
Global switch cost	RT	137	242	0.01	−0.10	0.75	0.23	0.04	0.34	0.37
	Error	5	13	0.03	0.16	1.33	0.10	0.02	0.15	0.44
Local switch cost	RT	62	200	0.01	−0.12	0.96	0.17	0.06	0.49	0.31
	Error	7	12	0.02	0.10	0.77	0.22	0.09	0.77	0.23

p < 0.05 (one-tailed). The R² change column shows the increase in R² after adding L1 proficiency and L2 proficiency predictor variables and its significance. The L1 proficiency and L2 proficiency column shows the significance of the L1 proficiency and L2 proficiency predictor variables in the regression analyses, respectively.