Table 5.
Parameter estimates and goodness-of-fit statistics from the full bivariate dual change score model of Anxiety Personality Questionnaire and Thurstone score.
| Model | Misfit/Parameters | Scaling Factor | Compare | Δfit/ΔParameter |
|---|---|---|---|---|
| 1. Full model | −17485/38 | 1.61 | – | – |
| CFI = 0.88 | ||||
| RMSEA= 0.03 | ||||
| 2. No coupling | −17492/34 | 1.62 | 1 | 9.65/4* |
| Test 3 Year coupling | ||||
| 3. Set Thur➔Anx =0 | −17491/37 | 1.62 | 1 | 9.49/1** |
| 4. Set Anx ➔Thur =0 | −17485/37 | 1.59 | 1 | .43/1 |
| Test 6 Year coupling | ||||
| 5.Set Thur➔Anx =0 | −17486/37 | 1.62 | 1 | .95/1 |
| 6. Set Anx ➔Thur =0 | −17485/37 | 1.64 | 1 | 2.13/1 |
|
| ||||
| Anxiety | Thurstone | |||
| Parameter | Est | SE | Est | SE |
|
| ||||
| Constant Change | =1 | – | =1 | – |
| Proportional Change | −.06 | .20 | .41 | .07** |
| Three-year coupling | ||||
| Coupling Anx➔Thur | – | – | .04 | .15 |
| Coupling Thur➔Anx | −.18 | .09** | – | – |
| Six-year coupling | ||||
| Coupling Anx➔Thur | – | – | −.01 | .01 |
| Coupling Thur➔Anx | .01 | .01 | – | – |
| Mean Intercept | 50.13 | .65 | 55.07 | .58 |
| Mean Slope | 12.29 | 13.18 | −23.93 | 9.28 |
| Intercept deviation | 14.59 | 4.70 | 35.56 | 2.99 |
| Slope deviation | 1.31 | 1.26 | 5.88 | 1.96 |
| Error deviation | 16.60 | 1.34 | 20.82 | 1.06 |
Notes: Coupling Anx ➔ Thur = coupling parameter γANX*THURSTONE; Coupling Thurstone ➔ Anx = coupling parameter γTHURSTONE*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