Table 1.

Descriptive statistics for age, IQ, and language measures at time 1 and time 2, grouped according to gender

Measure		Time 1				Time 2
		n	Mean	SD	Range	n	Mean	SD	Range
Chronological age	Girls	14	12.04	1.57	10.18–15.59	14	14.02	1.53	12.18–17.45
	Boys	30	12.87	1.81	10.17–16.01	30	14.88	1.81	12.21–18.00
Nonverbal cognition
Leiter-R brief IQ	Girls	14	66.86	13.96	46–91	14	66.00	18.76	38–95
	Boys	30	46.03	8.64	36–65	30	42.97	8.84	36–67
Vocabulary
PPVT-III age equivalent	Girls	14	10.10	2.58	5.3–14.8	14	11.04	2.91	5.67–17.00
	Boys	30	6.55	2.47	2.4–14.3	30	6.99	3.04	1.75–17.42
EVT age equivalent	Girls	14	9.00	2.43	5.42–13.83	14	10.44	2.84	6.33–17.33
	Boys	30	5.43	1.97	3.17–10.92	29	6.12	2.52	3.58–13.58
Syntax
TROG-2 age equivalent	Girls	14	7.06	3.04	<4.00–12.00	14	8.03	2.90	4.42–12.00
	Boys	30	4.43	0.94	<4.00–7.92	30	4.66	1.58	<4.00–10.83
CASL-SC age equivalent	Girls	14	7.81	2.43	2.17–11.33	14	9.42	3.12	3.25–14.25
	Boys	29	4.17	2.06	2.08–9.67	28	4.40	2.37	2.08–10.00

PPVT-III Peabody Picture Vocabulary Test, Third Edition, EVT Expressive Vocabulary Test, TROG-2 Test for Reception of Grammar, Second Edition, CASL-SC Comprehensive Assessment of Spoken Language, Syntax Construction subtest