Table 1.

CELF scores ages 9 & 11, for both the full sample and the ERP sample

Age 9 (full sample)
	Mean PCE (N= 116)	Mean NDE (N= 99)	t	df	p
Word Classes	6.98	7.73	2.08	214	0.04
Semantic Relations	7.41	8.47	2.62	214	0.01
Receptive language composite	83	88	2.16	213	0.03
Forming sentences	6.59	7.74	2.76	214	0.01
Sentence assembly	8.06	8.88	2.19	213	0.03
Expressive language composite	83.19	88.1	2.17	213	0.03
Total language composite	81.78	88.12	2.18	212	0.03
Age 11 (full sample)
	Mean PCE (N=218)	Mean NDE (N= 67)	t	df	p
Word Classes	7.37	7.33	−0.11	284	0.91
Semantic Relations	8.63	8.02	1.37	282	0.17
Receptive language composite	84.56	87.64	1.18	283	0.24
Forming sentences	7.52	7.19	−0.80	284	0.43
Sentence assembly	9.12	9.51	0.83	283	0.41
Expressive language composite	87.74	87.69	−0.02	283	0.98
Total language composite	85.13	86.69	0.63	283	0.53
Age 9 (ERP sample)
	Mean PCE (N= 67)	Mean NDE (N= 36)	t	df	p
Word Classes	6.64	7.44	2.50	102	0.12
Semantic Relations	7.58	8.14	0.87	102	0.35
Receptive language composite	82.31	87.14	2.09	102	0.15
Forming sentences	6.7	7.28	0.86	102	0.35
Sentence assembly	8.21	9.19	1.08	102	0.18
Expressive language composite	83.04	87.25	1.20	102	0.28
Total language composite	81.37	86.22	1.85	102	0.18
Age 11 (ERP sample)
	Mean PCE (N=93)	Mean NDE (N= 45)	t	df	p
Word Classes	7.13	7.20	0.01	143	0.90
Semantic Relations	7.8	8.83	30.7	143	0.07
Receptive language composite	82.75	87.39	2.04	143	0.16
Forming sentences	7.24	7.51	0.06	143	0.81
Sentence assembly	9.10	9.90	1.75	143	0.18
Expressive language composite	85.29	88.22	0.99	143	0.33
Total language composite	82.85	86.90	1.75	143	0.19