Cutrona & Russell, 1990
The ability to turn to others for comfort and security during times of stress, leading the person to feel that he or she is cared for by others.
Cutrona, Carolyn E., and Daniel W. Russell. "Type of social support and specific stress: Toward a theory of optimal matching". In B. R. Sarason, I. G. Sarason, & G. R. Pierce (Eds.), Social support: An interactional view New York: Wiley 1990:322.