Table 2.
Correlations of BRS Scales
| Scale | BRS total | Emotional Regulation | Motor Quality | Orientation/ Engagement |
|---|---|---|---|---|
| 18 Months (r) | ||||
| BRS total | 1.00 | |||
| Emotional Regulation | 0.84 | 1.00 | ||
| Motor Quality | 0.58 | 0.40 | 1.00 | |
| Orientation/Engagement | 0.84 | 0.68 | 0.39 | 1.00 |
| MDI | 0.50 | 0.44 | 0.48 | 0.44 |
| PDI | 0.44 | 0.26 | 0.63 | 0.32 |
| 30 Months (r) | ||||
| BRS total | 1.00 | |||
| Emotional Regulation | 0.85 | 1.00 | ||
| Motor Quality | 0.68 | 0.51 | 1.00 | |
| Orientation/Engagement | 0.82 | 0.64 | 0.42 | 1.00 |
| MDI | 0.60 | 0.51 | 0.50 | 0.45 |
| PDI | 0.61 | 0.46 | 0.67 | 0.42 |
| 18 and 30 months (r) | 0.53 | 0.45 | 0.62 | 0.44 |
| 18 months | 30 months | 18 vs. 30 months MI | |
|---|---|---|---|
| M (SD) | M (SD) | P | |
| BRS total | 57 (31) | 61 (31) | 0.001 |
| Emotional Regulation | 57 (28) | 61 (30) | < .001 |
| Motor Quality | 52 (35) | 56 (36) | 0.002 |
| Orientation/Engagement | 57 (30) | 62 (30) | 0.001 |
| MDI | 81 (17) | 83 (18) | < .001 |
| PDI | 86 (18) | 85 (21) | 0.494 |
Note: N = 539. All correlations were statistically significant at p < .001; p-values for comparisons of mean scores over time are based on paired t-tests.