Testing H1, H2, H3 and H4
| DV = GPB | DV = GPI H2 | DV = GPB | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Step 1 | Step 2 | Step 3 | ||||||||||
| Variables | Coeff | se | t | p | Coeff | se | t | p | Coeff | se | t | p |
| Constant | 2.1153 | 0.1596 | 13.2514 | 0.0000 | 1.9482 | 0.1345 | 14.4814 | 0.0000 | 1.1268 | 0.1789 | 6.2975 | 0.0000 |
| GPA H1 | 0.3756 | 0.0408 | 9.1971 | 0.0000 | 0.4438 | 0.0344 | 12.8945 | 0.0000 | 0.1504 | 0.0441 | 3.4111 | 0.0007 |
| GPI H3 | 0.5074 | 0.0542 | 9.3662 | 0.0000 | ||||||||
| R-square | 0.177 | 0.297 | 0.328 | |||||||||
| F | 84.58 | 166.26 | 95.48 | |||||||||
| df1 | 1 | 1 | 2 | |||||||||
| df2 | 393 | 393 | 392 | |||||||||
| p | 0.0000 | 0.0000 | 0.0000 | |||||||||
| Total effect | ||||||||||||
| Total effect | se | t | p | LLCI | ULCI | |||||||
| 0.3756 | 0.0408 | 9.1971 | 0.0000 | 0.2953 | 0.4559 | |||||||
| Direct effect | ||||||||||||
| Direct effect | se | t | p | LLCI | ULCI | |||||||
| GPA → GPB | 0.1504 | 0.0441 | 3.4111 | 0.0007 | 0.0637 | 0.2371 | ||||||
| Bootstrapping indirect effect (H4) [to verify mediation] | ||||||||||||
| Indirect effect | BOOT se | BOOT LLCI | BOOT ULCI | |||||||||
| GPA→ GPI → GPB | 0.2252 (0.4438 × 5,074 = 0.2252) | 0.0316 | 0.1644 | 0.2887 | ||||||||
| DV = GPB | DV = GPI | DV = GPB | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Step 1 | Step 2 | Step 3 | ||||||||||
| Variables | Coeff | se | Coeff | se | Coeff | se | ||||||
| Constant | 2.1153 | 0.1596 | 13.2514 | 0.0000 | 1.9482 | 0.1345 | 14.4814 | 0.0000 | 1.1268 | 0.1789 | 6.2975 | 0.0000 |
| GPA | 0.1504 | 0.0441 | 3.4111 | 0.0007 | ||||||||
| GPI | ||||||||||||
| 0.177 | 0.297 | 0.328 | ||||||||||
| 84.58 | 166.26 | 95.48 | ||||||||||
| df1 | 1 | 1 | 2 | |||||||||
| df2 | 393 | 393 | 392 | |||||||||
| 0.0000 | 0.0000 | 0.0000 | ||||||||||
| Total effect | ||||||||||||
| Total effect | se | LLCI | ULCI | |||||||||
| 0.3756 | 0.0408 | 9.1971 | 0.0000 | 0.2953 | 0.4559 | |||||||
| Direct effect | ||||||||||||
| Direct effect | se | LLCI | ULCI | |||||||||
| GPA → GPB | 0.1504 | 0.0441 | 3.4111 | 0.0007 | 0.0637 | 0.2371 | ||||||
| Indirect effect | BOOT se | BOOT LLCI | BOOT ULCI | |||||||||
| GPA→ GPI → GPB | 0.2252 (0.4438 × 5,074 = 0.2252) | 0.0316 | 0.1644 | 0.2887 | ||||||||
Notes:
n = 395. Boot LLCI refers to the lower bound bootstrapping confidence intervals. Boot ULCL refers to the upper bound bootstrapping confidence intervals. The bias-corrected confidence intervals (BCCI) are based on 20,000 bootstrapping samples. The level of confidence for all confidence intervals in output was 0.95. We have four decimal digits for bootstrap results because some values may be very close to zero
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