Bartos, L JavierPosadas, M PilarWrapson, WendyKrägeloh, Chris2023-06-022023-06-022023-03-16Mindfulness, ISSN: 1868-8527 (Print); 1868-8535 (Online), Springer Science and Business Media LLC, 1-17. doi: 10.1007/s12671-023-02102-x1868-85271868-8535https://hdl.handle.net/10292/16217Response shift refers to variations in self-reported evaluations at different times from changes in one’s internal standards, values, and meanings. The current study explored the utility of the then-test to detect a potential mindfulness-based response shift occurrence during a mindfulness- and yoga-based intervention for student musicians, and to ascertain to what extent effect sizes could differ when adjusting for it.Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.http://creativecommons.org/licenses/by/4.0/5203 Clinical and Health Psychology52 PsychologyMind and BodyClinical Trials and Supportive ActivitiesComplementary and Integrative HealthClinical Research3 Good Health and Well Being1103 Clinical Sciences1608 Sociology1701 Psychology5201 Applied and developmental psychology5203 Clinical and health psychology5205 Social and personality psychologyIncreased Effect Sizes in a Mindfulness- and Yoga-Based Intervention After Adjusting for Response Shift with Then-TestJournal ArticleOpenAccess10.1007/s12671-023-02102-x