Increased Effect Sizes in a Mindfulness- and Yoga-Based Intervention After Adjusting for Response Shift with Then-Test.

Autor: Bartos LJ; Department of Psychology and Neuroscience, Auckland University of Technology, 90 Akoranga Drive, Auckland, 1142 New Zealand., Posadas MP; Department of Pedagogy and Singing, Royal Conservatory of Music Victoria Eugenia, 46 San Jerónimo Street, 18001 Granada, Spain.; Faculty of Education, Camilo Jose Cela University, 11 Marqués del Riscal Street, 28010 Madrid, Spain., Wrapson W; School of Clinical Sciences, Auckland University of Technology, 90 Akoranga Drive, Auckland, 1142 New Zealand., Krägeloh C; Department of Psychology and Neuroscience, Auckland University of Technology, 90 Akoranga Drive, Auckland, 1142 New Zealand.
Jazyk: angličtina
Zdroj: Mindfulness [Mindfulness (N Y)] 2023; Vol. 14 (4), pp. 953-969. Date of Electronic Publication: 2023 Mar 16.
DOI: 10.1007/s12671-023-02102-x
Abstrakt: Objectives: Response 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.
Method: Participants ( n  = 31) completed the Five Facet Mindfulness Questionnaire (FFMQ) halfway through the intervention (Time 1-FFMQ), post-intervention (Time 2-FFMQ), and immediately after Time 2-FFMQ with a then-test approach that asked participants to rate the FFMQ based on retrospective reflections on their mindfulness at Time 1 (then-test-FFMQ). Paired t -tests and Hedges' g effect sizes were computed to estimate three potential effects: response shift (Time 1-FFMQ minus then-test-FFMQ), the conventional intervention effect (Time 2-FFMQ minus Time 1-FFMQ), and the effect after adjusting for response shift (i.e., actual intervention effect = Time 2-FFMQ minus then-test-FFMQ).
Results: Response shift was significant for the FFMQ Observe subscale ( g  = 0.41) and total scale ( g  = 0.37). The adjusted scores in all subscales (Observe, g  = 0.47; Describe, g  = 0.25; Act Aware, g  = 0.40; Non-judge, g  = 0.28; Non-react, g  = 0.57) and total scale ( g  = 0.60) achieved significance and yielded larger effect sizes than the conventional results, for which only Act Aware ( g  = 0.28), Non-react ( g  = 0.36), and total scale ( g  = 0.28) were significant.
Conclusions: Notwithstanding some methodological limitations, this study lends support to the utility of the then-test to quantify response shift. When adjusting for it, effect sizes from a mindfulness- and yoga-based intervention were generally amplified.
Preregistration: This study was not preregistered.
Competing Interests: Conflict of InterestThe authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. We acknowledge that one of the authors (MPP) developed the CRAFT program. However, as stated in the authors’ contribution statement, MPP did not conceive this particular study and also was not responsible for the data collection nor the data analysis stages of this study, which was also a way to manage this particular potential conflict of interest.
(© The Author(s) 2023.)
Databáze: MEDLINE
Externí odkaz: