“…Recently, research has found support for negative affect reactivity (i.e., negative affect increase in response to stressor exposure), specifically as a mediator linking change in perceived partner responsiveness over 10 years to later mortality (Stanton, Selcuk, Farrell, Slatcher, & Ong, 2019). Furthermore, allostatic load (i.e., chronic physiological reactivity across multiple systems in response to stress; McEwen, 1998) has been linked to family strain (Priest et al, 2015), although evidence is still needed for this composite measure of biological dysregulation as a mediator linking families and health within a comprehensive, longitudinal model (Priest et al, 2019; Wiley, Bei, Bower, & Stanton, 2017). Finally, although theoretical models posit both psychological and biological pathways, few studies have simultaneously tested these mechanisms of effect.…”