Table A1.
Assessment of common method bias.
| Model | Chi-square | df | p | CFI | NFI | RMSEA |
|---|---|---|---|---|---|---|
| M1: Null | 6649.495 | 465 | .000 | NA | NA | NA |
| M2: Trait model | 692.547 | 389 | .000 | 0.951 | 0.896 | 0.058 |
| M3: Method model | 4298.029 | 434 | .000 | 0.375 | 0.354 | 0.195 |
| M4: Trait and method model | 574.772 | 358 | .000 | 0.965 | 0.914 | 0.051 |
| Model comparison | ||||||
| Δchi-square | Δdf | p | conclusion | |||
| Testing for the presence of trait factors | ||||||
| M1–M2 | 5956.948 | 67 | <.01 | M1>M2a | ||
| M3–M4 | 3723.257 | 67 | <.01 | M3>M4a | ||
| Testing for the presence of a method factor | ||||||
| M1–M3 | 2351.466 | 31 | <.01 | M1>M3b | ||
| M2–M4 | 117.775 | 31 | <.01 | M2>M4b | ||
NOTE: 1. CFI = Comparative Fit Index; NFI = Normed Fit Index; RMSEA = Root Mean Square Error of Approximation; NA = Not Applicable.
a
Evidence supporting presence of trait factors.
b
Evidence supporting presence of a method factor.