%0 Journal Article %@ 2369-2960 %I JMIR Publications %V 7 %N 4 %P e25762 %T Assessment of the Effectiveness of Identity-Based Public Health Announcements in Increasing the Likelihood of Complying With COVID-19 Guidelines: Randomized Controlled Cross-sectional Web-Based Study %A Dennis,Alexander S %A Moravec,Patricia L %A Kim,Antino %A Dennis,Alan R %+ Kelley School of Business, Indiana University, 1309 E 10th St, Bloomington, IN, 47405, United States, 1 8128552691, ardennis@indiana.edu %K Amazon Mechanical Turk %K compliance %K COVID-19 %K custom %K effectiveness %K guideline %K identity %K public health %K public health announcement %K public service announcement %K social media %K web-based health information %D 2021 %7 13.4.2021 %9 Short Paper %J JMIR Public Health Surveill %G English %X Background: Public health campaigns aimed at curbing the spread of COVID-19 are important in reducing disease transmission, but traditional information-based campaigns have received unexpectedly extreme backlash. Objective: This study aimed to investigate whether customizing of public service announcements (PSAs) providing health guidelines to match individuals’ identities increases their compliance. Methods: We conducted a within- and between-subjects, randomized controlled cross-sectional, web-based study in July 2020. Participants viewed two PSAs: one advocating wearing a mask in public settings and one advocating staying at home. The control PSA only provided information, and the treatment PSAs were designed to appeal to the identities held by individuals; that is, either a Christian identity or an economically motivated identity. Participants were asked about their identity and then provided a control PSA and treatment PSA matching their identity, in random order. The PSAs were of approximately 100 words. Results: We recruited 300 social media users from Amazon Mechanical Turk in accordance with usual protocols to ensure data quality. In total, 8 failed the data quality checks, and the remaining 292 were included in the analysis. In the identity-based PSA, the source of the PSA was changed, and a phrase of approximately 12 words relevant to the individual’s identity was inserted. A PSA tailored for Christians, when matched with a Christian identity, increased the likelihood of compliance by 12 percentage points. A PSA that focused on economic values, when shown to individuals who identified as economically motivated, increased the likelihood of compliance by 6 points. Conclusions: Using social media to deliver COVID-19 public health announcements customized to individuals’ identities is a promising measure to increase compliance with public health guidelines. Trial Registration: ISRCTN Registry 22331899; https://www.isrctn.com/ISRCTN22331899. %M 33819910 %R 10.2196/25762 %U https://publichealth.jmir.org/2021/4/e25762 %U https://doi.org/10.2196/25762 %U http://www.ncbi.nlm.nih.gov/pubmed/33819910