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Di Maio, S., Keller, J., Hohl, D. H., Schwarzer, R., & Knoll, N. (2021). Habits and self-efficacy moderate the effects of ntentions and planning on physical activity. British Journal of Health Psychology, 26, 50-66. https://doi.org/10.1111/bjhp.12452

Domke, A., Keller, J., Heuse, S., Wiedemann, A. U., Lorbeer, N., & Knoll, N. (2021). Immediate effects of a very brief planning intervention on fruit and vegetable consumption: A randomized controlled trial. Applied Psychology: Health and Well-Being,13, 377-391. https://doi.org/10.1111/aphw.12254

Eicher, S., Pryss, R., Baumeister, H., Hövener, C., Knoll, N., & Cordes, C. (2021). Quality of life during the COVID-19 pandemic – Results of the CORONA HEALTH App study. Journal of Health Monitoring, 6, S6. https://doi.org/10.25646/8867

Hill, K., Somerset, S., Schwarzer, R., & Chan, C. (2021). Promoting the community’s ability to detect and respond to suicide risk through an online bystander intervention model-informed tool: A randomised controlled trial. Crisis: The Journal of Crisis Intervention and Suicide Prevention, 42(3), 225-231. https://doi.org/10.1027/0227-5910/a000708

Hommes, F., van Loon, W., Thielecke, M., Abramovich, I., Lieber, S., Hammerich, R., Gehrke-Beck, S., Linzbach, E., Schuster, A., von dem Busche, K., Theuring, S., Gertler, M., Martinez, G. E., Richter, J., Bergmann, C., Bölke, A., Böhringer, F., Mall, M. A., Rosen, A., Krannich, A., Keller, J., Bethke, N., Kurzmann, M., Kurth, T., Kirchberger, V., Seybold, J., Mockenhaupt, F. P., & The BECOSS Study Group (2021). SARS-CoV-2 infection, risk perception, behaviour and preventive measures at schools in Berlin, Germany, during the early post-lockdown phase: A cross-sectional study. International Journal of Environmental Research and Public Health, 18(5), 2739. https://doi.org/10.3390/ijerph18052739

Keller, J., Kwasnicka, D., Klaiber, P., Sichert, L., Lally, P., & Fleig, L. (2021). Habit formation following routine-based versus time-based cue planning: A randomized controlled trial. British Journal of Health Psychology, 26(3), 807-824. https://doi.org/10.1111/bjhp.12504

Keller, J., Roitzheim, C., Radtke, T., Schenkel, K., & Schwarzer, R. (2021). A mobile intervention for self-efficacious and goal-directed smartphone use in the general population: Randomized controlled trial. JMIR Mhealth Uhealth, 9(11), e26397. https://doi.org/10.2196/26397

Kwasnicka, D., Kale, D., Schneider, V., Keller, J., Yeboah-Asiamah Asare, B., Powell^, D., Naughton, F., ten Hoor, G., Verboon, P., Perski, O. (2021). Systematic review of Ecological Momentary Assessment (EMA) studies of five public health-related behaviours: Review Protocol. BMJ Open, 11(7), e046435. https://doi.org/10.1136/bmjopen-2020-046435

Laiou, E., Rapti, I, Schwarzer, R., Fleig, L., Cianferotti, L., Ngo, J., Rizos, E.C. ... (2021). Review: Nudge interventions to promote healthy diets and physical activity. Food Policy, 102, 102103. https://doi.org/10.1016/j.foodpol.2021.102103

Rosas, R., Pimenta, F., Leal, I. &, Schwarzer, R. (2021). FOODLITPRO: Conceptual and empirical development of the food literacy wheel. International Journal of Food Sciences and Nutrition, 72 (1), 99-111. https://doi.org/10.1080/09637486.2020.1762547

Scholz, U., Stadler, G., Berli, C., Lüscher, J., & Knoll, N. (2021). How do people experience and respond to social control from their partner? Three daily diary studies. Frontiers in Psychology, 11, 613546. https://doi.org/10.3389/fpsyg.2020.613546 

Smith, S. R., Kroon, J., Schwarzer, R., & Hamilton, K. (2021). Social-cognitive predictors of parental supervised toothbrushing: An application of the health action process approach. British Journal of Health Psychology, 26(4), 995-1015. https://doi.org/10.1111/bjhp.12516

Szczuka, Z., Abraham, C., Baban, A., Brooks, S., Cipolletta, S., Danso, E., . . . Luszczynska, A. (2021). The trajectory of COVID-19 pandemic and handwashing adherence: findings from 14 countries. BMC Public Health, 21(1), 1791. https://doi.org/10.1186/s12889-021-11822-5

Szczuka, Z., Kulis, E., Boberska, M., Banik, A., Kruk, M., Keller, J., Knoll, N., Scholz, U., Abraham, C., & Luszczynska, A. (2021). Can individual, dyadic, or collaborative planning reduce sedentary behavior? A randomized controlled trial. Social Science & Medicine, 287, 114336. https://doi.org/10.1016/j.socscimed.2021.114336

Wilhelm, L. O., Pauly, T., Ashe, M. C., & Hoppmann, C. A. (2021). Daily physical activity in older age: Associations with affective barriers. GeroPsych: The Journal of Gerontopsychology and Geriatric Psychiatry, 34(3), 125–135. https://doi.org/10.1024/1662-9647/a000255