Table 5.
Demographic information for all combined VAULT participants.
| Characteristic | Combined VAULT participants | |
|---|---|---|
| n (male, female) | 43 (25, 18) | |
| Age in months, M (SD) | 29 (4) | |
| Standard score on the Bayley a , M (SD) | 95 (10) | |
| Number of words produced on the initial MCDI, M (SD) | 71 (96) | |
| Number of words understood on the initial MCDI, M (SD) | 369 (150) | |
| Race | 34 White, 7 more than one race, 1 Black/African American, 1 no response | |
| Ethnicity | 15 Hispanic, 28 Non-Hispanic | |
| Maternal education | ||
| High school | 2 | |
| Associate degree or some college | 13 | |
| Bachelor's degree | 15 | |
| Graduate degree | 13 |
Note. VAULT = Vocabulary Acquisition and Usage for Late Talkers; Bayley = Bayley Scales of Infant and Toddler Development–Third Edition (Bayley, 2006); MCDI = MacArthur–Bates Communicative Development Inventories: Words and Sentences (Fenson et al., 2007).
a
Administration of the Bayley was discontinued before a ceiling was reached for eight participants, so these scores are likely underestimates of the children's abilities.