Table 3.
Correlation matrix of the Digit Span measures.
| Backwards | Ratio | Total | ||
|---|---|---|---|---|
| Lifespan | Forwards | 0.61 | −0.41 | 0.9 |
| Backwards | 0.67 | 0.9 | ||
| Ratio | 0.29 | |||
| Development Adults | Forwards | 0.57 | −0.17 | 0.89 |
| Backwards | 0.68 | 0.88 | ||
| Ratio | 0.28 | |||
| Adults | Forwards | 0.54 | −0.27 | 0.88 |
| Backwards | 0.64 | 0.87 | ||
| Ratio | 0.21 | |||
| Older adults | Forwards | 0.53 | −0.2 | 0.87 |
| Backwards | 0.69 | 0.88 | ||
| Ratio | 0.29 |
Digit Span Total is the sum of backwards and forwards, while Ratio is the ratio backwards over forwards. The table display the correlation matrices for each age group, as well across the entire sample.