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Matthias Volz, Miriam Henkel, Carola Cropp

    Zeitschrift Fur Psychosomatische Medizin Und Psychotherapie
    |June 27, 2025
    PubMed
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    A new 36-item version of the OPD Conflict Questionnaire (OPD-KF36) was developed and validated. This short form effectively screens for unconscious conflicts and coping modes, offering a time-efficient alternative to the original questionnaire.

    Area of Science:

    • Psychological Assessment
    • Clinical Psychology
    • Psychometrics

    Background:

    • The original OPD Conflict Questionnaire (OPD-KF) is a lengthy instrument for assessing unconscious conflicts.
    • A need exists for a more time-efficient screening tool for clinical use.

    Purpose of the Study:

    • To develop and validate a short version of the OPD Conflict Questionnaire (OPD-KF36).
    • To assess the reliability and validity of the new short version in a large patient sample.

    Main Methods:

    • A combinatorial approach was used to select 36 items from the original OPD-KF in a selection sample (N=2539).
    • The reliability and validity of the OPD-KF36 were assessed in an independent validation sample (N=2540) of outpatients and inpatients.
    • Cross-validation was performed using randomized samples.
    Keywords:
    Kurzfragebogen - Operationalisierte Psychodynamische Diagnostik - intrapsychische Konflikteshort form - Operationalized Psychodynamic Diagnostics - unconscious conflicts

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    Main Results:

    • The OPD-KF36 demonstrated good average reliability (ω = .71), comparable to the long version.
    • Correlations across versions and with clinical criteria confirmed the validity of the short form.
    • Mean differences between outpatients and inpatients were accurately captured by both versions.

    Conclusions:

    • The OPD-KF36 is a valid, reliable, and time-efficient instrument for screening unconscious conflicts and coping modes.
    • Reliability limitations for scales K0 and K2 persist, mirroring those in the long version.
    • The OPD-KF36 is a practical tool for clinical settings, with discussed limitations and future research directions.