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Published on in Vol 28 (2026)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/85552, first published .
Teenager in jeans and hoodie using smartphone outdoors

Promoting Psychological Resilience and Well-Being in Youth With a Smartphone-Based Ecological Momentary mHealth Intervention: Secondary Analysis of a Microrandomized Trial

Promoting Psychological Resilience and Well-Being in Youth With a Smartphone-Based Ecological Momentary mHealth Intervention: Secondary Analysis of a Microrandomized Trial

Eva Wierzba   1 , MSc ;   Anita Schick   1 , Dipl (Psych), PhD ;   Christian Rauschenberg   1, 2 , MSc, PhD ;   Janik Fechtelpeter   3, 4, 5, 6 , MSc ;   Selina Hiller   7, 8 , MSc ;   Christian Götzl   9 , MA ;   Daniel Durstewitz   3, 10 , MSc, PhD ;   Silvia Krumm   11 , MA, PhD ;   Georgia Koppe   4, 5, 6, 12 , MSc, Dipl (Psych), PhD ;   Ulrich Reininghaus   1, 2, 13, 14 , MSc, Dipl (Psych), PhD

1 Department of Public Mental Health, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

2 German Center for Mental Health (DZPG), Partner Site Mannheim-Heidelberg-Ulm, Mannheim, Germany

3 Department of Theoretical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

4 Hector Institute for Artificial Intelligence in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany

5 Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

6 RG (Research Group) Machine Learning Human Behavior, Interdisciplinary Center for Scientific Computing, Heidelberg University, Heidelberg, Germany

7 Department of Psychiatry and Psychotherapy, School of Medicine and Health, Technical University of Munich, TUM University Hospital, Munich, Germany

8 German Center for Mental Health (DZPG), Partner Site Munich-Augsburg, Munich, Germany

9 Department of Forensic Psychiatry and Psychotherapy, University of Ulm and BKH Guenzburg, Ulm, Germany

10 Interdisciplinary Center for Scientific Computing, Heidelberg University, Heidelberg, Germany

11 Department of Psychiatry and Psychotherapy, Medical Faculty, Leipzig University, Leipzig, Germany

12 Hertie Institute for AI (Artificial Intelligence) in Brain Health, University of Tübingen, Tübingen, Germany

13 Health Service and Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom

14 ESRC (Economic and Social Research Council) Centre for Society and Mental Health, King's College London, London, United Kingdom

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