Table 3. The Amount of Variance in Complex Span Partial Credit Score, With Simple Span Partial Credit Score Already Controlled for, Predicted in Each Year Group by Performance on Potential Tests of Primary Memory Capacity.
| Independent variable type | Year | Independent variable entered | Δ R2 | F | df | p |
|---|---|---|---|---|---|---|
| Note. df = degrees of freedom. | ||||||
| Average number of items recalled | 1 | Free recall | <.001 | 0.021 | 1, 40 | .885 |
| Interleaved lists | .004 | 0.172 | 1, 40 | .680 | ||
| Split span | .024 | 1.095 | 1, 40 | .302 | ||
| 3 | Free recall | .078 | 4.970 | 1, 46 | .031 | |
| Interleaved lists | .083 | 5.341 | 1, 46 | .025 | ||
| Split span | .004 | 0.206 | 1, 46 | .652 | ||