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Specific Objectivity of Mindfulness—A Rasch Analysis of the Freiburg Mindfulness Inventory

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Abstract

Even as modern research on mindfulness has expanded, debate continues with regard to the measurement and conceptualization of mindfulness. This divergence has manifested in a proliferation of different measurement approaches. The present research contributes to the advancement of mindfulness measurement by performing a Rasch model analysis of the psychometric properties of the short form of the Freiburg Mindfulness Inventory (FMI-14). This rigorous psychometric method belongs to the family item response theory and can be considered to be a set of approaches complementing classical test theory. The FMI-14 was administered to a nonclinical convenience sample of N = 1,452 German adults. Our data showed poor fit to the Rasch model. A reanalysis of the model excluding one particular misfitting item (number 13) yielded an acceptable fit for the originally proposed one-factorial solution to the Rasch model. However, a two-factorial solution with the subfacets “presence” and “acceptance” provided a better overall fit than the unidimensional solution. Some degree of differential item functioning could be observed both in the uni- and two-dimensional solution suggesting that potential exists for improving the measurement quality of the FMI-13. In line with the recent research, it is concluded that the FMI-13 should be considered as a two-dimensional rather than a unidimensional instrument.

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Acknowledgments

This work was made possible by the US Army Medical Research and Materiel Command under Award No. W81XWH-06-1-0279. The views, opinions and/or findings contained in this report are those of the authors and should not be construed as an official DoD position, policy or decision unless so designated by other documentation.

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Correspondence to Sebastian Sauer.

Appendix

Appendix

Items of the FMI-14

  1. 1

    I am open to the experience of the present moment.

  2. 2

    I sense my body, whether eating, cooking, cleaning or talking

  3. 3

    When I notice an absence of mind, I gently return to the experience of the here and now.

  4. 4

    I am able to appreciate myself.

  5. 5

    I pay attention to what’s behind my actions.

  6. 6

    I see my mistakes and difficulties without judging them.

  7. 7

    I feel connected to my experience in the here-and-now.

  8. 8

    I accept unpleasant experiences.

  9. 9

    I am friendly to myself when things go wrong.

  10. 10

    I watch my feelings without getting lost in them.

  11. 11

    In difficult situations, I can pause without immediately reacting.

  12. 12

    I experience moments of inner peace and ease, even when things get hectic and stressful.

  13. 13

    I am impatient with myself and with others (inversely coded)

  14. 14

    I am able to smile when I notice how I sometimes make life difficult.

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Sauer, S., Ziegler, M., Danay, E. et al. Specific Objectivity of Mindfulness—A Rasch Analysis of the Freiburg Mindfulness Inventory. Mindfulness 4, 45–54 (2013). https://doi.org/10.1007/s12671-012-0145-y

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