MEASUREMENT OF SOCIAL-INTERACTION IN CHANGE OF HEALTH BEHAVIOR

A social network approach to measuring social interaction related to c hange of health behavior required 460 participants in a health promoti on program to nominate up to five network members and to rate the supp ortiveness of each person in changing health behavior during the previ ous year. Exploratory factor analysis of intercorrelations of the eigh t items suggested two factors representing supportive and negative int eraction with internal consistency reliability of .89 and .61, respect ively.