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. Author manuscript; available in PMC: 2012 Jul 16.
Published in final edited form as: Clin Linguist Phon. 2006 Sep-Oct;20(0):553–561. doi: 10.1080/02699200500266455

Table I.

Description of participants.

SLI
 6N
 4N
AA W AA W AA W
Number per group     6   10   12   24   15   16
Age in months   75.17   73.30   71.08   71.54   56.60   54.50
   (5.70)    (6.34)    (4.66)    (4.76)    (6.92)    (7.70)
CMMSa   94.50   92.60 102.92 103.04   92.17 101.38
   (5.75)    (3.95)  (11.81)   (9.00)   (9.95)  (15.29)
PPVT-Rb   71.67   77.10   90.08 101.67   82.73   94.62
   (4.18)    (5.92)    (9.60)  (14.21) (13.06) (11.86)
TOLD-P:2c   74.00   71.80   93.42   99.50   87.87   96.06
   (7.34) (10.79)    (5.51) (12.35)    (8.93)    (9.56)
GFTAd      1.21   −.64       .84     1.77       .66       .68
Average z score    (1.33)    (1.25)     (.85)     (.78)     (.31)     (.88)
Percentile corresponding to average z score   89   27   80  96 74 75
CSSBe   83.33   84.80 103.67 108.83 91.20 100.88
(14.29)    (4.92)  (11.90)  (14.04)  (8.51)  (10.28)
a

Standard score on the Columbia Mental Maturity Scale (Burgmeister, Blum, & Lorge, 1972). Mean5100; SD = 15.

b

Peabody Picture Vocabulary Test–Revised (Dunn & Dunn, 1987). Mean= 100; SD = 15.

c

Syntactic quotient of Test of Language Development-Primary: Second Edition (Newcomer & Hammill, 1988). Mean = 100; SD = 15.

d

Goldman-Fristoe Test of Articulation (Goldman & Fristoe, 1986). Z scores were used in the analyses. Percentiles that correspond to each group’s average z score are reported for descriptive purposes.

e

Comprehension subtest VI of the Stanford-Binet (Thorndike, Hagen, & Sattler, 1986). Mean = 100; SD = 16.