Table 7.
Correlations of Latent Common Factors for WM Near Transfer Tasks and Drift Rates at Pretest and Posttest
| Masking time | Pretest | Posttest | Difference of Correlations | ||
|---|---|---|---|---|---|
|
|
|||||
| r (95%-CI) | Δχ2[df]b | r (95%-CI) | Δχ2[df]b | Δχ2 [df]c | |
|
| |||||
| 12 ms | .330 (.072; .588) | 6.41 [1]* | .521 (.282; .760) | 17.00 [1]* | 1.71 [1] n.s. |
| 24 ms | .529 (.209; .848) | 9.92 [1]* | .597 (.351; .843) | 21.14 [1]* | 0.17 [1] n.s. |
| 47 ms | .659 (.412; .907) | 18.31 [1]* | .807 (.605; 1.009) | 33.59 [1]* | 1.05 [1] n.s. |
| 94 ms | .551 (.292; .810) | 13.06 [1]* | .747 (.561; .932) | 35.70 [1]* | 1.69 [1] n.s. |
| alla | .592 (.316; .868) | 13.89 [1]* | .714 (.500; .928) | 28.98 [1]* | NAd |
Note. Strong measurement invariance; correlated residuals for same tasks at pretest and posttest, as well as for the Letters and Digits task at pretest and at posttest.
a
Drift rate estimates for the different masking time conditions averaged before analysis.
b
χ2 difference of likelihood ratio test comparison with a model in which the correlation is constrained to zero.
c
χ2 difference of likelihood ratio test comparison with a model in which the pre- and posttest correlations are constrained to be equal.
d
Constrained model could not be estimated.
*
p < .05.