Van 1995 tot 1998 startte en coördineerde de Psychological Therapies Research Centre van de Universiteit van Leeds in Groot Brittannië de ontwikkeling van CORE. Samen met een multidisciplinair team van onderzoekers en ervaren GGZ professionals ontwikkelden zij het CORE systeem. Na 1998 werd de verdere ontwikkeling en support van het systeem onafhankelijk van (overheids) subsidies en werd het als zelfstandig product op de markt gebracht door CORE.
Het CORE systeem heeft altijd in de belangstelling gestaan van onderzoekers en wetenschappers. Er is een sterke link geweest met het onderzoek naar meetinstrumenten in de geestelijke gezondheidszorg. De onderstaande referentielijst is een weergave van onderzoeksresultaten naar het gebruik van het CORE systeem in de praktijk.
Referenties:
1. Barkham, M., Evans, C., Margison, F., McGrath, G., Mellor-Clark, J., Milne, D. & Connell, J. (1998). The rationale for developing and implementing core batteries in service settings and psychotherapy outcome research. Journal of Mental Health, 7, 35-47.
2. Evans, C., Mellor-Clark, J., Margison, F., Barkham, M., McGrath, G., Connell, J. & Audin, K. Clinical Outcomes in Routine Evaluation: The CORE-OM. (2000). Journal of Mental Health, 9, 247-255.
3. Evans, C., Connell, J., Barkham, M., Margison, F., Mellor-Clark, J., McGrath, G. & Audin, K. (2002). Towards a standardised brief outcome measure: Psychometric properties and utility of the CORE-OM. British Journal of Psychiatry, 180, 51-60.
4. Barkham, M., Culverwell, A., Spindler, K., Twigg, E., & Connell, J. (2005). The CORE-OM in an older adult population: Psychometric status, acceptability, and feasibility. Aging and Mental Health, 9, 235-245.
5. Barkham, M., Gilbert, N., Connell, J., Marshall, C. & Twigg, E. (2005). Suitability and utility of the CORE-OM and CORE-A for assessing severity of presenting problems in psychological therapy services based in primary and secondary care settings. British Journal of Psychiatry, 186, 239-246.
6. Barkham, M., Mellor-Clark. J., Connell, J., & Cahill J. (2006). A CORE approach to practice-based evidence: A brief history of the origins and applications of the CORE-OM and CORE System. Counselling & Psychotherapy Research, 6, 3-15.
7. Cahill, J., Barkham, M., Stiles, W.B., Twigg, E., Rees, A., Hardy, G.E., & Evans C. (2006). Convergent validity of the CORE measures with measures of depression for clients in brief cognitive therapy for depression. Journal of Counseling Psychology, 53, 253-259.
8. Lyne, J., Barrett, P., Evans, C., & Barkham, M. (2006). Dimensions of variation on the CORE-OM amongst patients attending for psychological therapy. British Journal of Clinical Psychology, 45, 185-203.
9. Leach, C., Lucock, M., Barkham, M., Stiles, W.B., Noble, R., & Iveson, S. (2006). Transforming between Beck Depression Inventory and CORE-OM scores in routine clinical practice. British Journal of Clinical Psychology, 45, 153-166.
10. Barkham, M., Mullin, T., Leach, C., Stiles, W.B., & Lucock, M. (in press). Stability of the CORE-OM and BDI-I: Psychometric properties and implications for routine practice. Psychology & Psychotherapy: Theory, Research & Practice.
11. Barkham, M., Margison, F., Leach, C., Lucock, M., Mellor-Clark, J., Evans, C., Benson, L., Connell, J., Audin, K. & McGrath, G. (2001). Service profiling and outcomes benchmarking using the CORE-OM: Towards practice-based evidence in the psychological therapies. Journal of Consulting and Clinical Psychology, 69, 184-196.
12. Evans, C., Connell, J., Barkham, M., Marshall, C. & Mellor-Clark, J. (2003). Practice-based evidence: Benchmarking NHS primary care counselling services at national and local levels. Clinical Psychology & Psychotherapy, 10, 374-388.
13. Gilbert, N., Barkham, M., Richards, A., & Cameron, I. (2005). The effectiveness of a primary care mental health service delivering brief psychological interventions: A benchmarking study using the CORE System. Primary Care Mental Health, 3, 241–251.
14. Mullin, T., Barkham, M., Mothersole, G., Bewick, B.M., & Kinder, A. (2006). Recovery and improvement benchmarks in routine primary care mental health settings. Counselling & Psychotherapy Research, 6, 68-80.
15. Mellor-Clark, J., Barkham, M., Connell, J. & Evans, C. (1999). Practice-based evidence and the need for a standardised evaluation system: Informing the design of the CORE System. European Journal of Psychotherapy, Counselling and Health, 3, 357-374
16. Mellor-Clark, J., Connell, J., Barkham, M. & Cummins, P. (2001). Counselling outcomes in primary health care: a CORE system data profile. European Journal of Psychotherapy, Counselling and Health, 4, 65-86.
17. Bewick, B.M., Barkham, M., Connell, J., & Twigg, E. (in prep). The CORE-5: Ongoing monitoring of psychological therapy outcomes.
18. Sinclair A, Barkham M, Evans C, Connell J, & Audin K. (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, 153-174.
19. Marshall, K., & Willoughby-Booth, S. (in press). Modifying the Clinical Outcomes in Routine Evaluation measure for use with people who have a learning disability. British Journal of Learning Disabilities.
20. Evans, R., Mellor-Clark, J., Barkham, M., & Mothersole, G. (2006). Routine outcome measurement and service quality management in NHS primary care psychological therapy services: Reflections on a decade of CORE development. European Journal of Psychotherapy and Counselling, 8, 141-161.
21. Mellor-Clark, J., Curtis Jenkins, A., Evans, R., Mothersole, G., & McIness, B. (2006). Resourcing a CORE Network to develop a National Research Database to help enhance psychological therapy and counselling service provision. Counselling & Psychotherapy Research, 6, 16-22.
22. Singleton, N., & Lewis, G. (2003) Better or Worse: A Longitudinal Study of the Mental Health of Adults Living in Private Households, 2000. London: Stationary Office
23. Connell, J., Barkham, M., Stiles, W.B., Twigg, E., Singleton, N., Evans, O., Miles, J.N.V. (2007). Distribution of CORE-OM scores in a general population, clinical cut-off points, and comparison with the CIS-R. British Journal of Psychiatry, 190, 69-74.
24. Spitzer, R.L., Williams, J.B., Gibbon, M., & First, M.B. (1992). The Structured Clinical Interview for DSM-III-R (SCID). I: History, rationale, and description. Archives of General Psychiatry, 49, 624-629
25. Gilbody, S., Richards, D.A., & Barkham, M. (in press). Diagnosing depression in primary care using self-completed instruments: a UK validation of the PHQ-9 and CORE-OM. British Journal of General Practice.
26. Jacobson, N.S. & Truax, P. (1991). Clinical significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59, 12-19
27. Wise, E. A. (2003). Psychotherapy outcome and satisfaction methods applied to intensive outpatient programming in a private practice setting. Psychotherapy: Theory, Research, Practice, Training, 40, 203-214.
28. Wise, E. A. (2004). Methods for analyzing psychotherapy outcomes: A review of clinical significance, reliable change, and recommendations for future directions. Journal of Personality Assessment, 82, 50-59.