Social support and perceived partner responsiveness have complex associations with salivary cortisol in married couples

Spousal support may help ameliorate the health consequences of stressful situations by downregulating cortisol. To examine how cortisol levels change in conjunction with spousal social support during discussions of a stressful situation, 191 married couples engaged in two 10-minute interactions addressing a personal (i.e., non-marital) problem. We coded for positive and negative social support provision and receipt, assessed the perception of received support, and collected salivary cortisol samples. We found that wives' display of more negative behaviors while receiving support was associated with an increase in wives' cortisol levels via an indirect (mediated) effect of perceived partner responsiveness. Overall, results suggest a link between support behaviors, changes in cortisol and perceived partner responsiveness, with more consistent links between support behaviors and responsiveness ratings relative to other paths, and cortisol effects found more often in wives than husbands. Exploratory analyses also suggest that cortisol levels coming into an interaction may impact elements of support interactions. The implications of the role of cortisol and partner responsiveness to the provision of spousal support are discussed.