It Matters If My Friends Stop Smoking: Social Support for Behavior Change in Social Media
summary
Finds from a factorial survey experiment on Mechanical Turk with about 1,300 US participants report odds ratios showing that post content and relationship tie matter: posts about smoking get more responses than eating or exercise, and posts from close ties (family/close friends) elicit more support than acquaintances. The study uses nine vignette conditions (three behaviors × three relationship types) to predict likelihood of like/comment/share/private message, and flags limits of MTurk, lack of behavioral outcomes, and peer-matching questions.
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