The CPQ [30] assesses cognitive, emotional and behavioral components of clinical perfectionism over the past month by means of 12 items that are responded using a four-point Likert scale (from “not at all” to “all of the time”). A number of studies have demonstrated the validity and reliability of CPQ and indicated that the it captures two factors named Personal Standards (PS) and Evaluative Concern (EC) [25, 26]. The example of the items is as follow: “Have you been told that your standards are too high?” (PS factor); “Have you been afraid that you might not reach your standards?” (EC factor). As shown in the results section, Table Table2,2, subscales of the CPQ showed acceptable McDonald's Omega coefficient. The CPQ can be seen in Additional file 1.
Measurement model and McDonald's Omega of subscales
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