Table 1.
Participant characteristics for full sample (All) and participants recruited from high and low BI populations. Means (sd) for age, Behavioral Inhibition Questionnaire total scores (BIQ), and social phobia symptoms assessed by the DISC clinical interview. Block design, Vocabulary, and Full Scale IQ Estimate (FSIQ-E) 80 are from the Wechsler Intelligence Scale for Children, Fourth Edition (WISC-IV) 81. Mean framewise displacement in functional MRI scan (FD) and mean number of functional MRI volumes censored from analyses due to movement (FD>0.5mm) did not significantly differ between groups (p's > 0.3).
| Group | N | Sex | Age | BIQ* | Social Phobia* | Block Design | Vocab. | FSIQ-E | FD | Censored volumes |
|---|---|---|---|---|---|---|---|---|---|---|
| High BI | 17 | 6M/11F | 10.1 (0.8) | 125.5 (16.1) | 3.1 (0.5) | 10.2 (2.9) | 11.8 (2.9) | 105.9 (14.9) | 0.24 (0.13) | 24 (17) |
| Low BI | 25 | 12M/13F | 10.2 (0.9) | 75.6 (21.6) | 0.6 (0.5) | 11.2 (3.5) | 12.9 (2.8) | 111.4 (15.1) | 0.21 (0.12) | 19 (22) |
| All | 42 | 18M/24F | 10.1 (0.8) | 95.8 (32) | 1.6 (2.7) | 10.8 (3.3) | 12.5 (2.9) | 109.2 (15.1) | 0.22 (0.13) | 21 (20) |
*
p < 0.05 in BI versus BN group comparison.