{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T09:54:32Z","timestamp":1792230872386,"version":"4.4.0"},"reference-count":40,"publisher":"Association for Computing Machinery (ACM)","issue":"4","license":[{"start":{"date-parts":[[2019,12,11]],"date-time":"2019-12-11T00:00:00Z","timestamp":1576022400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000026","name":"National Institute on Drug Abuse","doi-asserted-by":"publisher","award":["P30DA029926"],"award-info":[{"award-number":["P30DA029926"]}],"id":[{"id":"10.13039\/100000026","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Proc. ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2019,12,11]]},"abstract":"<jats:p>Recent advancements in sensing techniques for mHealth applications have led to successful development and deployments of several mHealth intervention designs, including Just-In-Time Adaptive Interventions (JITAI). JITAIs show great potential because they aim to provide the right type and amount of support, at the right time. Timing the delivery of a JITAI such as the user is receptive and available to engage with the intervention is crucial for a JITAI to succeed. Although previous research has extensively explored the role of context in users' responsiveness towards generic phone notifications, it has not been thoroughly explored for actual mHealth interventions. In this work, we explore the factors affecting users' receptivity towards JITAIs. To this end, we conducted a study with 189 participants, over a period of 6 weeks, where participants received interventions to improve their physical activity levels. The interventions were delivered by a chatbot-based digital coach -Ally - which was available on Android and iOS platforms.<\/jats:p>\n                  <jats:p>We define several metrics to gauge receptivity towards the interventions, and found that (1) several participant-specific characteristics (age, personality, and device type) show significant associations with the overall participant receptivity over the course of the study, and that (2) several contextual factors (day\/time, phone battery, phone interaction, physical activity, and location), show significant associations with the participant receptivity, in-the-moment. Further, we explore the relationship between the effectiveness of the intervention and receptivity towards those interventions; based on our analyses, we speculate that being receptive to interventions helped participants achieve physical activity goals, which in turn motivated participants to be more receptive to future interventions. Finally, we build machine-learning models to detect receptivity, with up to a 77% increase in F1 score over a biased random classifier.<\/jats:p>","DOI":"10.1145\/3369805","type":"journal-article","created":{"date-parts":[[2019,12,12]],"date-time":"2019-12-12T08:16:03Z","timestamp":1576138563000},"page":"1-27","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":78,"title":["Exploring the State-of-Receptivity for mHealth Interventions"],"prefix":"10.1145","volume":"3","author":[{"given":"Florian","family":"K\u00fcnzler","sequence":"first","affiliation":[{"name":"ETH Z\u00fcrich"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Varun","family":"Mishra","sequence":"additional","affiliation":[{"name":"Dartmouth College"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan-Niklas","family":"Kramer","sequence":"additional","affiliation":[{"name":"University of St. Gallen"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Kotz","sequence":"additional","affiliation":[{"name":"Dartmouth College"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elgar","family":"Fleisch","sequence":"additional","affiliation":[{"name":"ETH Z\u00fcrich University of St. Gallen"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tobias","family":"Kowatsch","sequence":"additional","affiliation":[{"name":"ETH Z\u00fcrich University of St. Gallen"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2020,9,14]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/2968219.2971451"},{"key":"e_1_2_2_2_1","doi-asserted-by":"crossref","unstructured":"Adrienne Andrew Gaetano Borriello and James Fogarty. 2007. Toward a Systematic Understanding of Suggestion Tactics in Persuasive Technologies. In Persuasive Technology Yvonne de Kort Wijnand IJsselsteijn Cees Midden Berry Eggen and B. J. Fogg (Eds.). Springer Berlin Heidelberg Berlin Heidelberg 259--270.  Adrienne Andrew Gaetano Borriello and James Fogarty. 2007. Toward a Systematic Understanding of Suggestion Tactics in Persuasive Technologies. In Persuasive Technology Yvonne de Kort Wijnand IJsselsteijn Cees Midden Berry Eggen and B. J. Fogg (Eds.). Springer Berlin Heidelberg Berlin Heidelberg 259--270.","DOI":"10.1007\/978-3-540-77006-0_32"},{"key":"e_1_2_2_3_1","unstructured":"Apple. 2018. CMMotionActivityManager. https:\/\/developer.apple.com\/documentation\/coremotion\/cmmotionactivitymanager. (2018). [Online; accessed 11-February-2019].  Apple. 2018. CMMotionActivityManager. https:\/\/developer.apple.com\/documentation\/coremotion\/cmmotionactivitymanager. (2018). 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