Table 6.
Parameter estimates and goodness-of-fit statistics from the full bivariate dual change score model of Anxiety Personality Questionnaire and Digits Forward score.
| Model | Misfit/Parameters | Scaling Factor | Compare | Δfit/ΔParameter |
|---|---|---|---|---|
| 1. Full model | −18673/38 | 1.51 | – | – |
| CFI = 0.91 | ||||
| RMSEA= 0.03 | ||||
| 2. No coupling | −18682/34 | 1.60 | 1 | 22.09/4** |
| Test 3 Year coupling | ||||
| 3. Set Dig F➔Anx =0 | −18681/37 | 1.54 | 1 | 33.27/1** |
| 4. Set Anx ➔Dig F=0 | −18674/37 | 1.55 | 1 | 12.43/1** |
| Test 6 Year coupling | ||||
| 5.Set Dig F➔Anx =0 | −18673/37 | 1.53 | 1 | .02/1 |
| 6. Set Anx ➔Dig F =0 | −18673/37 | 1.53 | 1 | .21/1 |
|
| ||||
| Anxiety | Digits Forward | |||
| Parameter | Est | SE | Est | SE |
|
| ||||
| Constant Change | =1 | – | =1 | – |
| Proportional Change | −.10 | .15 | .12 | .08 |
| Three-year coupling | ||||
| Coupling Anx➔Dig F | – | – | −.12 | .10 |
| Coupling Dig F➔Anx | −.29 | .12* | – | – |
| Six-year coupling | ||||
| Coupling Anx➔Dig F | – | – | −.01 | .02 |
| Coupling Dig F➔Anx | −.01 | .01 | – | – |
| Mean Intercept | 49.86 | .62** | 54.11 | .90** |
| Mean Slope | 21.04 | 10.52* | −.16 | 7.5 |
| Intercept deviation | 14.13 | 4.70** | 46.96 | 4.70** |
| Slope deviation | 3.93 | 2.98 | .97 | .82 |
| Error deviation | 16.56 | 1.34** | 37.78 | 1.34** |
Notes: Coupling Anx ➔ Dig F = coupling parameter γANX*DIGITS FORWARD; Coupling Dig F ➔ Anx = coupling parameter γDIGITS FORWARD*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