Table 3.

Means and Standard Deviations for FLTs & Language Measures

	Baseline		12 Month		24 Month		36 Month
	M	SD	M	SD	M	SD	M	SD
Lower Level FLTs (%)	74.60	9.54	61.85	9.83	56.12	10.94	50.47	10.70
Linguistic Mapping (%)	0.40	0.92	1.07	1.35	1.17	1.40	0.72	1.23
Comments (%)	23.53	7.62	15.91	5.63	12.61	6.01	11.88	6.35
Imitation (%)	0.33	0.58	2.53	2.27	2.76	2.30	2.97	2.20
Label (%)	6.90	4.79	4.80	3.77	2.54	2.71	2.20	2.56
Directive (%)	26.81	12.70	21.97	9.46	19.13	9.77	15.34	9.38
Closed-Ended Question (%)	16.63	8.02	15.57	5.95	17.91	6.47	17.92	6.63
Higher Level FLTs (%)	24.68	9.71	37.87	9.86	43.65	11.09	49.31	10.66
Open-Ended Question (%)	6.37	4.09	10.70	6.02	12.71	6.65	15.83	6.46
Expansion (%)	0.02	0.11	0.76	1.19	1.60	1.44	1.98	1.55
Expatiation (%)	0.01	0.07	0.53	0.81	0.72	0.73	1.03	1.05
Recast (%)	0.00	0.04	0.94	1.38	3.87	3.05	5.54	4.00
Parallel Talk (%)	18.27	9.43	24.92	9.03	24.75	9.32	24.50	9.32
Parent Utterances	105.99	42.98	118.50	32.48	113.12	33.89	108.10	30.00
Number of Different Word Types	88.60	30.85	106.54	30.10	119.60	32.83	128.55	33.50
Mean Length of Utterance	2.94	1.22	3.07	0.69	3.28	0.80	3.55	0.83