Table 1.
Group demographic information.
| Exploratory TD group | Exploratory SLI group | Confirmatory TD group | Confirmatory SLI group | |
|---|---|---|---|---|
| N | 32 | 32 | 22 | 10 |
| Male | 24 | 24 | 10 | 8 |
| Female | 8 | 8 | 12 | 2 |
| Mean age (in months) | 54.7 | 55.25 | 60.3 | 57.8 |
| Age range (in months) | 49–65 | 48–68 | 50–67 | 49–64 |
| Race | ||||
| White | 21 | 16 | 14 | 8 |
| Asian American | 1 | 1 | 1 | 0 |
| Black/African American | 1 | 6 | 0 | 1 |
| American Indian/Alaska Native | 0 | 0 | 1 | 0 |
| Hawaiian/Pacific Islander | 0 | 0 | 0 | 0 |
| Multiple races | 4 | 3 | 2 | 0 |
| Not reported | 5 | 6 | 4 | 1 |
| Ethnicity | ||||
| Hispanic or Latino | 7 | 16 | 7 | 3 |
| Not Hispanic or Latino | 5 | 3 | 2 | 2 |
| Not reporteda | 20 | 13 | 13 | 5 |
| Mean maternal or primary caregiver education level (in years) |
14.4 | 14.0 | 13.9 | 11.3 |
| Range of maternal or primary caregiver education level (in years) |
11–17 | 11–17 | 11–17 | 10–14 |
Note. TD = typically developing, SLI = specific language impairment.
a
The high rate of nonreporting of ethnicity may reflect the lack of a distinction between race and ethnicity among the general public such that individuals who select a race category often do not also select an ethnicity category and vice versa.