Identifikation problematischer Antwortmuster im Fragebogen zur Evaluation von Psychotherapieverläufen mit Hilfe der Rasch-Analyse

Translated title of the contribution: Identification of aberrant responses in the ”Questionnaire for the evaluation of treatment progress based on Rasch modeling

Eva Schurch, Wolfgang Lutz, Jan Boehnke

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Background: Undetected aberrant responses in questionnaire data cause biases and improper diagnostic decisions. Some questionnaires use algorithms to detect aberrant responses based on predefined criteria, but most questionnaires lack this possibility.

    Objective: A method for the identification of aberrant responses based on Rasch analysis, is introduced.

    Methods: As the first step a homogeneous scale is built according to the Rasch model, and in the second step persons with aberrant responses are identified based on this scale. The procedure is demonstrated with a psychological assessment instrument (FEP) on the basis of a mixed sample (N = 537).

    Conclusion: This procedure generates information useful for clinical-psychological applications in practice.
    Translated title of the contributionIdentification of aberrant responses in the ”Questionnaire for the evaluation of treatment progress based on Rasch modeling
    Original languageGerman
    Pages (from-to)135-144
    Number of pages10
    JournalZeitschrift für Klinische Psychologie und Psychotherapie
    Volume38
    Issue number2
    DOIs
    Publication statusPublished - 21 Apr 2009

    Keywords

    • probabilistic test theory
    • Rasch analysis
    • aberrant response patterns

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