Direct retrospective measurement of therapeutic changes : An example using the Czech version of the Questionnaire of Personal Changes (Q-PC)
| Authors | |
|---|---|
| Year of publication | 2024 |
| Type | Article in Periodical |
| Magazine / Source | Psychotherapy Research |
| MU Faculty or unit | |
| Citation | |
| Web | article - open access |
| Doi | http://dx.doi.org/10.1080/10503307.2024.2370357 |
| Keywords | Questionnaire of Personal Changes; retrospective measurement of change; direct measurement of change; factor analysis; sensitivity to change; positive change bias |
| Attached files | |
| Description | Objective. The study aimed to test the psychometric properties of the Czech translation of the Questionnaire of Personal Changes (Q-PC), a measure designed for retrospective (direct) measurement of change in psychotherapy. Methods. A sample of group psychotherapy clients (N = 222) and a nonclinical sample (N = 167) sample were used. Clients in the clinical sample were administered the Q-PC in addition to several pre-post outcome measures. Confirmatory factor analysis, correlational analysis, and structural equation modeling were used to test the Q-PC’s factor structure, longitudinal measurement invariance, reliability, convergent validity, sensitivity to change, and other psychometric properties. Results. The Q-PC demonstrated a unidimensional structure that was strictly invariant between two follow-up measurement waves. The measure also demonstrated excellent reliability and sensitivity to change and good convergent validity. Furthermore, it demonstrated a similar relationship to baseline severity as the pre-post outcome measures. Conclusions. The retrospective measurement of change is a promising approach that has the potential to complement the traditional pre-post measurement of change. |
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