Exploring the State-of-Receptivity for mHealth Interventions
summary
Study with 189 participants over 6 weeks deploys a chatbot coach Ally to push step-goal interventions and logs responses, activity, location, and phone state. Receptivity is measured as just-in-time response within 10 minutes, response delay, and conversation engagement. Older participants show higher overall receptivity; neurotic individuals have higher immediate reply rates but not deeper engagement. People are more receptive when on foot, less outside home/work and slower at work. Daily receptivity correlates with meeting step goals, and ML models boost F1 by up to 77% versus a biased random baseline.
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