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Full-Text Articles in Social and Behavioral Sciences
A Translation And Cultural Adaptation Of The Japanese Version Of The Outcome Questionnaire 45 (Oq), Risa Takara
A Translation And Cultural Adaptation Of The Japanese Version Of The Outcome Questionnaire 45 (Oq), Risa Takara
Theses and Dissertations
The need for psychotherapy outcome research is growing in Japan as the societal demands for psychotherapy have increased in recent years. Although researchers in Japan recognize the importance of integrating clinical practice and empirical research in evaluating psychotherapy outcome, most Japanese studies to date have relied heavily on qualitative case studies (Haebara, 1997; Kanazawa, 2004; Tanno, 2001). With the help of six translators and 116 native Japanese pilot respondents, this study adapted the Outcome Questionnaire (OQ; Lambert et al., 1996), one of the most common quantitative measures of clinical outcome, for use in Japan. The translation of the original OQ …
Multidimensional Item Response Theory In Clinical Measurement: A Bifactor Graded-Response Model Analysis Of The Outcome-Questionnaire-45.2, Arjan Berkeljon
Multidimensional Item Response Theory In Clinical Measurement: A Bifactor Graded-Response Model Analysis Of The Outcome-Questionnaire-45.2, Arjan Berkeljon
Theses and Dissertations
Bifactor Item Response Theory (IRT) models are presented as a plausible structure for psychological measures with a primary scale and two or more subscales. A bifactor graded response model, appropriate for polytomous categorical data, was fit to two university counseling center datasets (N=4,679 and N=4,500) of Outcome-Questionnaire-45.2 (OQ) psychotherapy intake data. The bifactor model showed superior fit compared to a unidimensional IRT model. IRT item parameters derived from the bifactor model show that items discriminate well on the primary scale. Items on the OQ's subscales maintain some discrimination ability over and above the primary scale. However, reliability estimates for the …