Table 4.

Results of statistical tests performed on the mean amplitude of ERP waveforms for different experimental conditions and participant groups in the specified latency ranges

Time window	Young Controls
	Condition			Electrode			C*E
	df	F	p	df	F	p	df	F	p
AS violation (‘the’)
300–400	1, 14	4.08	0.063	29, 406	1.13	0.355	29, 406	1.11	0.358
500–700	1, 14	0.23	0.636	29, 406	0.66	0.647	29, 406	0.5	0.723
AS violation (‘doctor’)
300–500	1, 14	2.22	0.158	29, 406	2.89	0.025	29, 406	0.85	0.512
500–700	1, 14	2.878	0.112	29, 406	3.05	0.021	29, 406	0.56	0.718
Semantic violation
300–500	1, 14	18.12	0.001	29, 406	1.1	0.361	29, 406	4.2	0.003
500–700	1, 14	19.16	0.001	29, 406	3.63	0.003	29, 406	4.3	0.001
	Age Matched
	Condition			Electrode			C*E
	df	F	p	df	F	p	df	F	p
AS violation (‘the’)
300–500	1, 22	0.35	0.56	29, 638	1.87	0.094	29, 638	0.96	0.42
500–700	1, 22	7.17	0.014	29, 638	1.2	0.315	29, 638	1.93	0.089
700–800	1, 22	14.89	0.001	29, 638	2.21	0.044	29, 638	4.02	0.012
AS violation (‘doctor’)
300–500	1, 22	1.5	0.233	29, 638	12.11	<.001	29, 638	3.00	0.038
500–700	1, 22	3.79	0.064	29, 638	5.54	<.001	29, 638	1.68	0.174
Semantic violation
300–500	1, 22	10.98	0.003	29, 638	5.96	0.001	29, 638	4.81	0.002
500–700	1, 22	7.67	0.011	29, 638	3.51	0.018	29, 638	2.53	0.049
	Nonfluent
	Condition			Electrode			C*E
	df	F	p	df	F	p	df	F	p
AS violation (‘the’)
300–500	1, 14	0	0.965	29, 406	1.93	0.069	29, 406	0.59	0.672
500–700	1, 14	0.18	0.676	29, 406	2.33	0.036	29, 406	1.08	0.379
AS violation (‘doctor’)
300–500	1, 14	0.05	0.833	29, 406	1.13	0.354	29, 406	0.56	0.672
500–700	1, 14	0.01	0.94	29, 406	1.48	0.209	29, 406	0.45	0.775
Semantic violation
300–500	1, 14	5.02	0.042	29, 406	1.28	0.278	29, 406	0.991	0.44
500–700	1, 14	4.54	0.051	29, 406	1.67	0.156	29, 406	0.82	0.498