Table 1.
Demographic information for study cohort (at time of scanning unless noted).
| No. | Variables | Mean ± SD | Range | |
|---|---|---|---|---|
| 1 | Age of mother, y | 30.2 ± 5.0 | 20–42 | |
| 2 | Age of baby – videotaping session, mth | 6.7 ± 1.6 | 5–10 | |
| 3 | Age of baby – scanning session, mth | 10.7 ± 2.3 | 7–17 | |
| 4 | Hollingshead SES score (joint with partner)* | 49.1 ± 12.7 | 24–66 | |
| 5 | Maternal IQ (WTAR-predicted WAIS-III) | 108.7 ± 9.2 | 81–120 | |
| 6 | Maternal Race (n) | |||
| - White, non-Hispanic | 13 | |||
| - African American | 7 | |||
| - Hispanic | 4 | |||
| - Other | 4 | |||
| 7 | Maternal Education (n) | |||
| - Post-graduate degree | 13 | |||
| - College/University degree | 9 | |||
| - Incomplete college | 6 | |||
| 8 | Marital Status (n) * | |||
| - Married | 20 | |||
| - Single/never married | 4 | |||
| - Unmarried cohabitation | 3 | |||
| 9 | Child Development at 14 months (n) * | Competent | Emerging | At Risk |
| - Cognitive | 21 | 5 | 1 | |
| - Receptive Communication | 25 | 2 | 0 | |
| - Expressive Communication | 21 | 6 | 0 | |
| - Fine Motor | 25 | 2 | 0 | |
| - Gross Motor | 27 | 0 | 0 | |
*
Data missing for one subject.