Table 7.
Parameter estimates and goodness-of-fit statistics from the full bivariate dual change score model of Anxiety Personality Questionnaire and Digits Backward score.
| Model | Misfit/Parameters | Scaling Factor | Compare | Δfit/Δrameter |
|---|---|---|---|---|
| 1. Full model | −18642/38 | 1.59 | – | – |
| CFI = 0.85 | ||||
| RMSEA = 0.03 | ||||
| 2. No coupling | −18654/34 | 1.71 | 1 | 41.58/1** |
| Test 3 Year coupling | ||||
| 3. Set Dig B➔Anx =0 | −18652/37 | 1.65 | 1 | 33.50/1** |
| 4. Set Anx ➔Dig B=0 | −18643/37 | 1.61 | 1 | 1.11/1 |
| Test 6 Year coupling | ||||
| 5.Set Dig B➔Anx =0 | −18642/37 | 1.61 | 1 | .29/1 |
| 6. Set Anx ➔Dig B =0 | −18642/37 | 1.61 | 1 | .63/1 |
|
| ||||
| Anxiety | Digits Backwards | |||
| Parameter | Est | SE | Est | SE |
|
| ||||
| Constant Change | =1 | – | =1 | – |
| Proportional Change | −.08 | .14 | .20 | .10* |
| Three-year coupling | ||||
| Coupling Anx➔Dig B | – | – | −.08 | .10 |
| Coupling Dig B➔Anx | −.28 | .11** | – | – |
| Six-year coupling | ||||
| Coupling Anx➔Dig B | – | – | .03 | .01 |
| Coupling Dig B➔Anx | −.01 | .01 | – | – |
| Mean Intercept | 49.97 | .63** | 55.57 | .65** |
| Mean Slope | 19.60 | 10.21 | −8.46 | 7.20 |
| Intercept deviation | 13.29 | 4.52** | 30.38 | 3.74** |
| Slope deviation | 2.59 | 1.94 | 1.38 | 1.16 |
| Error deviation | 16.35 | 1.33** | 40.55 | 1.92** |
Notes: Coupling Anx ➔ Dig B = coupling parameter γANX* DIGITS BACKWARD; Coupling Dig B ➔ Anx = coupling parameter γDIGITS BACKWARD*ANX. The three-year coupling represents change over a three-year period and six-year coupling represents change over a six-year period. Est represents parameter estimate.
**
denotes p <0.01
*
denotes p < 0.05