Table 1.
Characteristics of the subject groups.
| NC | ALN | ALI | SLI | Overall | Post Hoc Contrasts | ||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| n=11 | n=6 | n=16 | n=9 | F | P | NC & ALN vs. ALI & SLI | NC vs. ALN | SLI vs. ALI | |
| Mean ± SD | |||||||||
| Age (years) | 10.4 ± 2.7 | 8.3 ± 0.9 | 9.8 ± 2.1 | 9.9 ± 2.3 | 1.3 | 0.3 | |||
| Full Scale IQ a | 114.5 ± 11.3 | 109.3 ± 24.1 | 78.3 ± 14.7 | 93.4 ± 15.5 | 13.4 | <0.001 | * | * | |
| Verbal IQ | 115.9 ± 12.4 | 97.7 ± 19.3 | 75.1 ± 15.9 | 92.5 ± 15.6 | 14.9 | <0.001 | * | * | * |
| Nonverbal IQ | 110.6 ± 11 | 116.3 ± 24.9 | 87.9 ± 14.3 | 95.7 ± 14.6 | 7.2 | <0.001 | * | ||
| Language Testing | |||||||||
| Nonword Repetition b | - | 8.5 ± 1.9 | 6 ± 2.3 | 8.1 ± 2.9 | 3.1 | 0.06 | |||
| CELF c | - | 101 ± 12.1 | 65.5 ± 9.4 | 85.4 ± 11.2 | 23.5 | <0.001 | * | ||
*
p < 0.05
a
SLI and subjects with autism: Differential Ability Scales (Elliot, 1990); control subjects: WISC-III (Wechsler, 1991).
b
Repetition of Nonsense Words subtest of NEPSY (Korkman et al., 1998).
c
Clinical Evaluation of Language Fundamentals (Semel et al., 1995).
Abbreviations: NC - normal control; ALN - autism with normal language; ALI - autism with language impairment; SLI - specific language impairment.