as a predictor in the fourth model, resulting in an R2 of .374 (R2chg = .047,
F (1, 127) = 19.006, p < .001). Child-related task differentiation was added as a predictor
variable in the fifth model, producing an R2 of .396 and an R2 change of .021 over the
fourth model (F (1, 126) = 16.509, p < .001). The sixth and final step added the volatile
couple conflict type score as a predictor of marital disaffection resulting in an R2 of .417
and a change in the R2 of .021 over the fifth model. This final model also was significant
(F (1, 129) = 22.686, p < .001) and explained 41.7% of the variance in marital
disaffection. The results of the stepwise regression analysis are presented in Table 4-9
and the model's coefficients are found in Table 4-10.
Table 4-9. Marital Disaffection Stepwise Regression Model Summary
Step Variable R R2 Radi R chg F chg P dlf df
1 RLDS .406 .165 .158 .165 25.637 < .001 1 130
2 AGE-C .510 .260 .249 .095 16.649 < .001 1 129
3 WLB .572 .327 .311 .067 12.706 < .001 1 128
4 HSTL .612 .374 .355 .047 9.633 < .001 1 127
5 TD (C) .629 .396 .372 .021 4.455 < .001 1 126
6 VOL .646 .417 .389 .021 4.577 < .001 1 125
Table 4-10. Marital Disaffection Model Coefficients
Model B P
1 Constant 21.024
RLDS 1.947 .406
2 Constant 7.039
RLDS 1.999 .417
AGE-C .453 .309
3 Constant 20.946
RLDS 1.727 .360
AGE-C .393 .268
WLB -.157 -.267
4 Constant 18.762
RLDS 1.486 .310
AGE-C .357 .244
WLB -.144 -.245
HSTL 2.175 .227
t
11.676
5.063
1.840
5.498
4.080
3.914
4.846
3.650
-3.565
3.589
4.202
3.405
-3.349
3.104
Significance
<.001
< .001
.068
< .001
< .001
< .001
< .001
< .001
.001
< .001
< .001
.001
.001
.002