The Magnifying Effect of Marital Satisfaction on the Dyadic Effect of Disabilities on Life Satisfaction.

(1) Background. Extending previous work, the present study examined whether marital satisfaction would magnify the dyadic effect of disabilities on life satisfaction among older married couples. (2) Methods. With responses collected from 11,694 participants (5847 couples; Mage = 63.36 years, median: 62 years) in a large-scale survey study in China in 2015, the actor-partner interdependence model (APIM) analyses were conducted to examine how marital satisfaction moderated the actor and partner effects of disabilities on life satisfaction. In addition, mixed linear model analyses were conducted to examine the gender effect. (3) Results. The results showed that marital satisfaction magnified the negative association between disabilities and life satisfaction with different patterns for each gender. Specifically, husbands' disabilities significantly negatively predicted their own levels of life satisfaction among those with higher marital satisfaction but not among those with lower marital satisfaction. In contrast, for wives, spousal disabilities significantly predicted lower levels of life satisfaction among those with higher marital satisfaction but not among those with lower marital satisfaction. (4) Conclusions. The evidence for the magnifying effect of marital satisfaction obtained in the present study implicates the importance of taking dyadic dynamics in close relationships into account in health care research.