Table 1 Demographic properties of participant groups
| Group | Age when tested | Gender | Mullen Receptive Language raw scores | Primary caregiver years education* | Racial/ethnic background* |
|---|---|---|---|---|---|
| Autism (n = 17) | 50.3 m (10.6) | 11 m, 6 f | 28.6 (10.3) | 16.7 | 60% Caucasian, 33% Black, 7% Asian; 7% Hispanic |
| Age-matched controls (n = 17) | 50.1 m (10.5) | 11 m, 6 f | 42.0 (6.1) | 17.0 | 50% Caucasian, 13% Black, 31% Asian, 6% American Indian; 13% Hispanic |
| Language-matched controls (n = 13) | 35.5 m (12.8) | 7 m, 6 f | 32.9 (7.3) | 17.8 | 73% Caucasian, 18% Black, 9% Asian; 18% Hispanic |
| Autism subset matched for language (n = 13) | 51.5 m (9.9) | 9 m, 4 f | 32.5 (7.3) | 16.2 | 64% Caucasian, 27% Black, 9% Asian; 0% Hispanic |