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Psychometric properties of the self-as-context scale with a university counseling center sample
Zettle, Robert D. Lyons, Grace A. Larson, Jonathan M. Leonard, Christopher
Zettle, Robert D.
Lyons, Grace A.
Larson, Jonathan M.
Leonard, Christopher
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2025-07-04
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Article
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Known-groups validity,Measurement invariance,Psychometric properties,Self-as-context
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Citation
Zettle, R. D., Lyons, G. A., Larson, J. M., & Leonard, C. (2025). Psychometric Properties of the Self-as-Context Scale with a University Counseling Center Sample. Behavioral Sciences, 15(7), 910. https://doi.org/10.3390/bs15070910
Abstract
The model upon which acceptance and commitment therapy is based posits that its outcomes are mediated by increased psychological flexibility as a core process. Of the six subprocesses contributing to psychological flexibility, self-as-context has been investigated the least due to a lack of adequate assessment. An evaluation of the psychometric properties of at least one such measure—the Self-as-Context Scale (SACS)—has been primarily limited to nonclinical populations. To address this omission, we administered the SACS to students (N = 132) seeking psychological services from their university counseling center. A confirmatory factor analysis failed to find an adequate fit for a previously reported two-dimensional model of the SACS, suggesting that only total scores may be appropriate in research and practice involving clinical samples. All 10 items satisfactorily loaded on a single factor to produce reliable total scaled scores, which were, as expected, significantly lower for our participants than those from a general college student sample. Even lower scores were obtained for outpatients of a psychology training clinic compared to our sample, which provided additional support for the known-groups validity of the SACS. The limitations of the findings and implications for further investigations of the measure’s psychometric and functional properties are discussed. © 2025 by the authors.
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This is an open access article under the CC BY license.
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Multidisciplinary Digital Publishing Institute (MDPI)
Journal
Behavioral Sciences
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2076328X