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Information about the GP-CORE
As noted elsewhere, the CORE-SF/A, with the CORE-SF/B, were the only short forms alongside the CORE-OM in the suite of instruments at the launch of the system in 1998. After the launch the CORE group at the time recognised that there was a popular demand for another shortened measure based on the CORE-OM but intended not for clinical use but for general population surveys and similar research. The interest came particularly from universities, notably Leeds University where Prof. Barkham was based at the time, whose student counselling services were using the CORE-OM and who wanted to conduct surveys of general student mental health.
The GP-CORE has 14 items, two wellbeing items, four problem items, eight functioning items and no risk items. All eight of the positively cued items from the CORE-OM are included but only two of the 18 high tuned items: the GP-CORE is a measure tuned for discrimination in the non-clinical range of distress and dysfunction and scores should not be compared with those on the CORE-OM. Cautious use of prorating of up to one missing item is recommended and there are no domain scores.
Referencing the GP-CORE
The first reference describing and exploring the GP-CORE is:
Evans, C., Connell, J., Audin, K., Sinclair, A., & Barkham, M. (2005). Rationale and development of a general population well-being measure: Psychometric status of the GP-CORE in a student sample. British Journal of Guidance & Counselling, 33(2), 153–173. http://doi.org/10.1080/03069880500132581.
Download the English language PDF of the GP-CORE using link below, for other languages, go to Translations page.
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