Over the past 30 years investigators have called repeatedly for research on the mechanisms through which social relationships and social support improve physical and psychological well-being, both directly and as stress buffers. I describe seven possible mechanisms: social influence/social comparison, social control, role-based purpose and meaning (mattering), self-esteem, sense of control, belonging and companionship, and perceived support availability. Stress-buffering processes also involve these mechanisms. I argue that there are two broad types of support, emotional sustenance and active coping assistance, and two broad categories of supporters, significant others and experientially similar others, who specialize in supplying different types of support to distressed individuals. Emotionally sustaining behaviors and instrumental aid from significant others and empathy, active coping assistance, and role modeling from similar others should be most efficacious in alleviating the physical and emotional impacts of stressors.

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Forty decades of sociological stress research offer five major findings. First, when stressors (negative events, chronic strains, and traumas) are measured comprehensively, their damaging impacts on physical and mental health are substantial. Second, differential exposure to stressful experiences is a primary way that gender, racial-ethnic, marital status, and social class inequalities in physical and mental health are produced. Third, minority group members are additionally harmed by discrimination stress. Fourth, stressors proliferate over the life course and across generations, widening health gaps between advantaged and disadvantaged group members. Fifth, the impacts of stressors on health and well-being are reduced when persons have high levels of mastery, self-esteem, and/or social support. With respect to policy, to help individuals cope with adversity, tried and true coping and support interventions should be more widely disseminated and employed. To address health inequalities, the structural conditions that put people at risk of stressors should be a focus of programs and policies at macro and meso levels of intervention. Programs and policies also should target children who are at lifetime risk of ill health and distress due to exposure to poverty and stressful family circumstances.

It is useful to reconceptualize social support as coping assistance. If the same coping strategies used by individuals in response to stress are those that are applied to distressed persons as assistance, models of coping and support can be integrated. To illustrate the utility of such an integration, coping strategies and support strategies are derived from a more general theory of stress-buffering processes in this article. A variety of supportive strategies not previously identified by researchers are derived. Further, predictions regarding efficacious and nonefficacious types of support are made, and empathic understanding (based on sociocultural and situational similarities between a distressed person and a helper) is identified as a crucial condition for coping assistance to be sought, accepted, and found effective.Considerable research now indicates that social support reduces, or buffers, the adverse psychological impacts of exposure to stressful life events and ongoing life strains (Cohen & Wills,

Using two waves of panel data from Americans' Changing Lives (House 1995