Table 1.
Comparability of Treatment Groups on Moderator, Time 1 Measure of IPSyn and Other Descriptive Variables.
| Descriptors | MLT (27) | BTR (30) | ||
|---|---|---|---|---|
| M(SD) | M(SD) | p | d | |
| IPSyn total score a | 37(13) | 37(13) | .98 | 0.00 |
| MLU a | 2.0(.5) | 2.0(.5) | .87 | 0.06 |
| No. different word roots a | 138(61) | 137(48) | .96 | 0.02 |
| Goldman-Fristoe SS b | 91(11) | 90(17) | .75 | 0.07 |
| Expressive Language PR c | 5.5(3) | 5.0(3) | .75 | 0.09 |
| Nonverbal Cognition SS d | 103(13) | 98(9) | .11 | 0.45 |
| Age in years | 3.6(.5) | 3.6(.7) | .91 | 0.03 |
| Parental formal education e | 6.8(1.3) | 7.1(.8) | .31 | −.28 |
| Parental occupational status f | 53(21) | 54(20) | .82 | −.05 |
a
Two 20-minute language samples.
b
Goldman-Fristoe Test of Test of Articulation 2 (Goldman & Fristoe, 2000).
c
Preschool Language Scale III (Zimmerman, et al., 1992).
d
Leiter International Performance Scale-Revised (Roid & Miller, 1997).
e
Nine point scale of years in school with 7 = at least 4 years in college.
f
Stevens and Cho, 1986 scale of occupational status with population mean of 29 (SD = 23).
SS = standard score. PR = percentile ranking.