Table 9.
Incremental Validity of the PCQ When Predicting Symptoms of Anxiety, Depression, and OCD.
| Predictor | Outcome | R2 | ΔR2 | β | t | |
|---|---|---|---|---|---|---|
| Anxiety | ||||||
| Model 1 | PSWQ Total | GAD-Q | .563 | .563*** | .750 | 22.618*** |
| Model 2 | PSWQ Total | GAD-Q | .593 | .029*** | .601 | 14.512*** |
| PCQ Total | .227 | 5.351*** | ||||
| Model 1 | PCQ Total | GAD-Q | .386 | .386*** | .622 | 15.773*** |
| Model 2 | PCQ Total | GAD-Q | .417 | .030*** | .481 | 9.723*** |
| MCQ Total | .224 | 4.540*** | ||||
| Model 1 | PCQ Total | DASS–Anxiety | .254 | .254*** | .504 | 11.527*** |
| Model 2 | PCQ Total | DASS–Anxiety | .303 | .049*** | .311 | 5.556*** |
| PSWQ | .293 | 5.229*** | ||||
| Model 1 | MCQ Total | DASS–Anxiety | .433 | .433*** | .658 | 17.270*** |
| Model 2 | MCQ Total | DASS–Anxiety | .446 | .013** | .565 | 11.622*** |
| PCQ Total | .146 | 3.011** | ||||
| Depression | ||||||
| Model 1 | RRS–Brooding | BDI-II | .335 | .335*** | .579 | 4.819 |
| Model 2 | RRS–Brooding | BDI-II | ||||
| PCQ Total | ||||||
| Model 1 | PCQ Total | BDI-II | .306 | .306*** | .553 | 4.401*** |
| Model 2 | PCQ Total | BDI-II | ||||
| RRQ–Rumination | ||||||
| Model 1 | PCQ Total | BDI-II | .300 | .300*** | .548 | .4395*** |
| Model 2 | PCQ Total | BDI-II | ||||
| PBRS | ||||||
| Model 1 | PCQ Total | BDI-II | .315 | .315*** | .561 | 12.620*** |
| Model 2 | PCQ Total | BDI-II | .369 | .055*** | .422 | 8.501*** |
| PBRS | .272 | 5.485*** | ||||
| Model 1 | RRS–Brooding | DASS–Depression | .394 | .394*** | .627 | 15.928*** |
| Model 2 | RRS–Brooding | DASS–Depression | .418 | .025*** | .493 | 9.703*** |
| PCQ Total | .207 | 4.073*** | ||||
| Model 1 | PCQ Total | DASS–Depression | .277 | .277*** | .526 | 12.211*** |
| Model 2 | PCQ Total | DASS–Depression | ||||
| RRQ–Rumination | ||||||
| Model 1 | PCQ Total | DASS–Depression | .308 | .308*** | .555 | 13.175*** |
| Model 2 | PBRS | DASS–Depression | .383 | .075*** | .385 | 8.202*** |
| PCQ Total | .323 | 6.889*** | ||||
| Model 1 | RRS–Brooding | IDAS–General Depression | .455 | .455*** | .675 | 18.097*** |
| Model 2 | RRS–Brooding | IDAS–General Depression | .520 | .064*** | .457 | 9.909*** |
| PCQ Total | .334 | 7.242*** | ||||
| Model 1 | PCQ Total | IDAS–General Depression | .399 | .399*** | .632 | 16.131*** |
| Model 2 | PCQ Total | IDAS-General Depression | .441 | .042*** | .402 | 7.063*** |
| RRQ–Rumination | .308 | 5.419*** | ||||
| Model 1 | PCQ Total | IDAS–General Depression | .399 | .399*** | .632 | 16.131*** |
| Model 2 | PCQ Total | IDAS–General Depression | .478 | .079*** | .457 | 10.636*** |
| PBRS | .332 | 7.717*** | ||||
| OCD | ||||||
| Model 1 | OBQ Total | YBOCS Total | .376 | .376*** | .613 | 15.421*** |
| Model 2 | OBQ Total | YBOCS Total | .401 | .026*** | .485 | 9.726*** |
| PCQ Total | .205 | 4.109*** |
Note. N = 399. PCQ = Perseverative Cognitions Questionnaire; PSWQ = Penn State Worry Questionnaire; MCQ = Meta-Cognitions Questionnaire; RRQ = Rumination–Reflection Questionnaire; RRS = Ruminative Response Scale; PBRS = Positive Beliefs about Rumination Scale; OBQ = Obsessive Beliefs Questionnaire; YBOCS = Yale–Brown Obsessive Compulsive Scale; DASS = Depression Anxiety Stress Scale; IDAS = Inventory of Depression and Anxiety Symptoms; GAD-Q = Generalized Anxiety Disorder Questionnaire; BDI-II = Beck Depression Inventory–II; OCD = obsessive compulsive disorder.
*
p < .05.
**
p < .01.
***
p < .001.