Social Network Index (SNI)

Author of Tool: 

Cohen, S.

Key references: 

Cohen, S., Doyle, W. J., Skoner, D. P., Rabin, B. S., and Gwaltney, J. M., Jr. (1997). Social ties and susceptibility to the common cold. Journal of the American Medical Association, 277, 1940-1944. Journal of the American Medical Association, 277, 1940-1944. 

Bickart, K. C., et al (2011). Amygdala volume and social network size in humans. Nature Neuroscience, 14, 163-164. 

(2.) Bickart, K. C., et al (2012). Intrinsic amygdala–cortical functional connectivity predicts social network size in humans. Journal of Neuroscience, 32, 14729-14741.

Primary use / Purpose: 

Assesses participation in 12 types of social relationships.

Background: 

The Social Network Index (SNI) assesses participation in 12 types of social relationships. These include relationships with a spouse, parents, parents-in-law, children, other close family members, close neighbours, friends, workmates, schoolmates, fellow volunteers, members of groups without religious affiliation, and religious groups. One point is assigned for each type of relationship (possible score of 12) for which respondents indicate that they speak (in person or on the phone) to persons in that relationship at least once every two weeks.

Psychometrics: 

For full psychometric description see: Cohen, S., Doyle, W. J., Skoner, D. P., Rabin, B. S., and Gwaltney, J. M., Jr. (1997). Social ties and susceptibility to the common cold. Journal of the American Medical Association, 277, 1940-1944.Journal of the American Medical Association, 277, 1940-1944. 

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