| TPB Variables | Sum of Squares | df | Mean Square | F | Sig. | |
| ATTITUDE | Between Groups | 496.188 | 4 | 124.047 | 21.015 | 0.000 |
| Within Groups | 926.732 | 157 | 5.903 |
|
| |
| Total | 1422.920 | 161 |
|
|
| |
| SUBJET Norm | Between Groups | 1406.112 | 4 | 351.528 | 55.504 | 0.000 |
| Within Groups | 994.333 | 157 | 6.333 |
|
| |
| Total | 2400.444 | 161 |
|
|
| |
| PCB | Between Groups | 1162.162 | 4 | 290.540 | 28.936 | 0.000 |
| Within Groups | 1576.387 | 157 | 10.041 |
|
| |
| Total | 2738.549 | 161 |
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| |