==== Front Innov Aging Innov Aging innovateage Innovation in Aging 2399-5300 Oxford University Press US 10.1093/geroni/igaa057.1203 igaa057.1203 Abstracts Session 2948 (Poster) Health Promotion and Well-Being I AcademicSubjects/SOC02600 Comparing a Clinician Assisted and App-Supported Positive Psychiatry Behavioral Activation Intervention Massie Ariane 1 Cassidy Keri-Leigh 2 Vallis Michael 3 Conn David 4 Parsons Daria 5 Mitchell Julie Spence 5 Checkland Claire 5 Rabheru Kiran 6 1 York University, North York, Ontario, Canada 2 Dalhousie University, Dalhousie University, Nova Scotia, Canada 3 Dalhousie University, Halifax, Nova Scotia, Canada 4 University of Toronto, Toronto, Ontario, Canada 5 Canadian Coalition for Seniors Mental Health, Markham, Ontario, Canada 6 University of Ottawa, Ottawa, Ontario, Canada 2020 16 12 2020 16 12 2020 4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”373 374 © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America.2020This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract Positive psychiatry offers a unique approach to promote brain health and well-being in aging populations. Health interventions are increasingly becoming available using self-guided apps, however, little is known about the effectiveness of app technology or the difference between in-person versus self-guided app methodology for behavioural activation. The objective of this study was to investigate the difference in users and outcomes between two formats of a positive psychiatry intervention to promote brain health and well-being in later-life: (1) clinician-assisted, and (2) independent app use for self-management. As part of a larger national knowledge translation intervention two methods of a behavioural activation intervention (Clinician-assisted vs. Independent app use) were retrospectively compared. Main outcomes were patient characteristics (age, sex, and completion rate), psychological outcomes (health and resilience, and well-being), and behavioural outcomes (goal attainment, and items of goal SMART-ness). Clinician-assisted patients (n=254) were more likely to be male, older, and had lower health and resilience scores at baseline than Independent app users (n=333). Clinician-assisted patients had notably higher completion rates (99.2% vs. 10.8%). Psychological outcomes were similar regardless of intervention method for those who completed the intervention. Clinician-assisted patients had higher rates of goal attainment and goal SMART-ness. A preliminary goal setting methodology for effective behavioural activation, to promote brain health and wellness, is given. Clinician-patient relationships were found to be an important factor for intervention completion, caution is given for app use referral. Results indicate a need for further exploration to determine best practices for health app use in clinical practice.