Table 3.
Parameter estimates from latent growth curve model
| Parameter | Estimate (SE) | Significance |
|---|---|---|
| Intercept | 47.02 (0.74) | p < .01 |
| Intercept × child SEP | −2.17 (1.11) | p < .05 |
| Intercept × adult SEP | 1.95 (1.32) | p = .14 |
| Intercept × child SEP × adult SEP | 3.14 (1.60) | p < .05 |
| Slope 1 | 4.37 (0.48) | p < .01 |
| Slope 1 × child SEP | −1.53 (0.74) | p < .05 |
| Slope 1 × adult SEP | 0.38 (0.94) | p = .68 |
| Slope 1 × child SEP × adult SEP | 2.06 (1.29) | p = .11 |
| Slope 2 | 9.66 (0.75) | p < .01 |
| Slope 2 × child SEP | 0.39 (1.24) | p = .75 |
| Slope 2 × adult SEP | 2.31 (1.34) | p < .10 |
| Slope 2 × child SEP × adult SEP | −1.98 (1.89) | p = .30 |
SEP is coded low = 0, high = 1. LGC model is centered at age 70, Slope 1 = before 70 years, slope 2 = after 70 years.