| INTRODUCTIONRalston, Andrews, and Hope (2019) provide a detailed review of promising technologies that aim to reduce mental health care disparities among underserved populations. Telemental health (e.g., videoconferencing), technology-mediated self-help (e.g., mobile applications, Internet-based), and technology adjuncts to care (e.g., symptom tracking, in-session treatment aids) are addressed. The authors proposed the Reach, Effectiveness, Adoption, Implementation, and Maintenance (RE-AIM) framework as a guide to examine the potential for technology-based tools to address mental health care disparities. The authors were correct to note that research to date has focused primarily in the areas of effectiveness and adoption, whereas considerably less work has been done in the realms of reach, implementation, and maintenance of these tools among underserved populations. This review is a timely call to action given the tremendous opportunities technology can bring to addressing care disparities. A major priority moving forward is the need to better understand how to deliver evidence-based interventions to underserved populations in a manner that will be easily accessible and promote engagement and sustained use. We offer some comments, building on Ralston et al. (2019) review, that highlight opportunities to promote reach, dissemination, and engagement in evidence-based technology-enhanced interventions among underserved populations.
| PROMOTING REACH AND DISSEMINATIONAmong technology-based resources, those delivered via mobile devices (e.g., cellphones, smartphones, tablets) might hold the most promise with regard to increasing reach. Roughly, 95% of US adults use a cellphone and 77% own a smartphone (Pew Research Center, 2018). Latinx (77%) and African-American (75%) adults are just as likely to own a smartphone as White adults (77%) and are more likely to seek health information online. Rates of cellphone and smartphone ownership are 92% and 67% for low-income level (less than $30,000 per year) families, and 91% and 65% for rural populations, respectively. Whereas smartphone ownership continues to rise, cellphone ownership continues to be dominant among underserved groups. This suggests that cellphone based alternatives to enhancing interventions may be a valuable way to improve reach and continuity of care among underserved populations. Mobile apps have been found to successfully decrease symptoms of anxiety, depression, and substance use, but reach and sustained use of these interventions has been poor. More research is needed to learn how to best adapt these interventions to optimize their utility.Whereas there is clear opportunity to improve reach with technology-based resources, strategies for effective dissemination are less clear. To date, there are over 20,000 mobile mental health applications available through both Apple's App Store for iOS devices and Google Play for Android devices. Moreover, data indicate that approximately 58% of