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. Author manuscript; available in PMC: 2013 Dec 16.
Published in final edited form as: J Speech Lang Hear Res. 2009 Apr;52(2):10.1044/1092-4388(2009/07-0189). doi: 10.1044/1092-4388(2009/07-0189)

Table 1.

Age and standardized scores for language assessment measures for the specific language impairment (SLI) and the normal language (NL) groups.

SLI (n = 35)
 NL (n = 78)
 Comparison
Variable M SD Range M SD Range t(110) P
Age (in months) 115 21 77–172 95 21 67–154 4.15 < .001*
Leiter–Nonverbal IQa 97 8 87–119 109 10 85–139 6.70 < .001*
CELF-3 ELSb 71 11 50–84 109 12 86–150 10.69 < .001*
CELF-3 RLSc 68 14 50–98 N/A N/A N/A
PPVT-IIId 89 11 66–112 109 11 87–135 8.91 < .001*
EVTe 81 9 61–109 104 10 85–124 11.56 < .001*

Note. For each variable, age-scaled scores have a mean of 100 and an SD of 15. IQ = intelligent quotient; N/A = not applicable.

a

Leiter International Performance Scale (Roid & Miller, 1997).

b

CELF-3 ELS = Clinical Evaluation of Language Fundamentals–3: Expressive Language score (Semel et al., 1995).

c

CELF-3: RLS = Clinical Evaluation of Language Fundamentals–3: Receptive Language Score (Semel et al., 1995).

d

PPVT-III = Peabody Picture Vocabulary Test, Third Edition (Dunn & Dunn, 1997).

e

EVT = Expressive Vocabulary Test (Williams, 1997).