Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Means (M) and Standard Deviations (SD) for IPSyn Total Score a in SLI Sample(n) by Treatment Group and Assessment Period
| Period | MLT (27) |
BTR (30) |
|---|---|---|
| M(SD) | M(SD) | |
| 1 | 38.4(13.3) | 38.5(12.5) |
| 2 | 43.7(13.7) | 44.2(14.4) |
| 3 | 46.6(13.5) | 46.7(13.7) |
| 4 | 51.2(11.2) | 50.1(11.8) |
| 5 | 52.6(10.9) | 50.4(15.2) |
| 6 | 55.9(8.3) | 55.2(12.1) |
From language samples.
Note: IPSyn = Index of Productive Syntax (Scarborough, 1990).
