Table 3.
Simulated Models and Results
Models | Model Conditions | Performance | Relative Bias | ||||
---|---|---|---|---|---|---|---|
Size of Mediated Effect ab | Response shift | Power | Type I error | a | b 3 | c’ | |
Model 1 | Small ES | None | .787 | - | <.001 | ||
Model 2 | Small ES | Positive Direction | .938 | - | 0.394 | 0.006 | <.001 |
Model 3 | Small ES | Negative Direction | .407 | - | −0.393 | 0.002 | <.001 |
Model 4 | Zero | None | - | .037 | <.001 | ||
Model 5 | Zero | Positive Direction | - | .190 | 1.190 | 0.006 | <.001 |
Model 6 | Zero | Negative Direction | - | .206 | −1.190 | 0.006 | <.001 |
Model 7 | Small ES; Med. ES for c’ | None | .787 | - | <.001 | ||
Model 8 | Small ES; Med. ES for c’ | Positive Direction | .938 | - | 0.394 | <.001 | <.001 |
Note. ES is Effect Size. Relative Bias below a level of .05 is considered acceptable. When response shift was present, it had a medium effect size for 2 of 6 items