Table 5.
Change in Episodic Memory, Processing Speed, and Working Memory Predicted by Race
| Measure | Episodic Memory | Processing Speed | Working Memory |
|---|---|---|---|
|
| |||
| Coefficient (SE) | Coefficient (SE) | Coefficient (SE) | |
| Fixed effects | |||
| Intercept, γ00 | 10.480 (0.051)** | 59.601 (0.315)** | 7.418 (0.073)** |
| Age, γ01 | −0.006 (0.015) | −0.487 (0.091)** | −0.020 (0.021) |
| African American, γ02 | −0.348 (0.093)** | −6.08 (0.572)** | −1.103 (0.132)** |
| Asian American, γ03 | −0.180 (0.093) | 2.361 (0.574)** | −0.533 (0.132)** |
| Education, γ04 | 1.64 (0.035)** | 1.563 (0.217)** | 0.406 (0.050)** |
| Family Income, γ05 | 0.180 (0.048)** | 1.829 (0.293)** | 0.162 (0.067) |
| Menopause Status,γ06 | 0.012 (0.025) | 0.262 (0.153) | −0.007 (0.035) |
| Practice Effect, γ07 | 0.348 (0.035)** | 1.093 (0.216)** | 0.179 (0.050)** |
| Linear slope, γ10 | 0.047 (0.22) | −0.074 (0.089) | −0.037 (0.023) |
| Age, γ11 | 0.000 (0.006) | −0.053 (0.026) | −0.004 (0.007) |
| African American, γ12 | −0.111 (0.040)* | 0.077 (0.164) | 0.011 (0.042) |
| Asian American, γ13 | −0.014 (0.039) | −0.147 (0.159) | −0.045 (0.040) |
| Education, γ14 | −0.001 (0.015) | −0.010 (0.061) | 0.006 (0.016) |
| Family Income, γ15 | −0.025 (0.020) | −0.060 (0.083) | −0.039 (0.021) |
| Menopause Status,γ16 | 0.003 (0.011) | −0.062 (0.042) | −0.011 (0.011) |
| Practice Effect, γ17 | −0.037 (0.016) | 0.043 (0.063) | −0.001 (0.016) |
| Random effects | Variance Components | ||
| Intercept, τ00 | 0.861** | 63.112** | 3.168** |
| Linear slope, τ11 | 0.014 | 0.287 | 0.052* |
| Level 1, σ2 | 1.709** | 26.858** | 1.569** |
| Model Fit: H0 Value (df) | −8622.450 (20) | −16092.051 (20) | −9184.985 (20) |
Note.
*
p < 0.01
**
p < 0.001 compared to European Americans (reference group).