CORE stands for “Clinical Outcomes in Routine Evaluation” and the CORE system comprises tools and thinking to support monitoring of change and outcomes in routine practice in psychotherapy, counselling and any other work attempting to promote psychological recovery, health and wellbeing. CORE System Trust owns the copyright on all the instruments in the system. More information about CST here.

The CORE outcome measure (CORE-10) is a session by session monitoring tool with items covering anxiety, depression, trauma, physical problems, functioning and risk to self. The measure has six high intensity/ severity and four low intensity/ severity items.

The Young Person's CORE (YP-CORE) is a ten item measure designed for use with the 11-16 years age range. 


CORE measurement tools are available from CORE Systems Trust, via the 'Instruments' drop down bar:

Terms of use

CORE System Trust (CST) holds the copyright of the CORE instruments but seeks to promote their use without payment of reproduction fees (see Copyright and Licensing for details).

Working remotely with CORE 

CORE Systems Trust (YP CORE and CORE 10) has shared a statement relating to Covid-19 and have shared versions of their measures to support practitioners working remotely at this time. 

Find out more here

Further information 


Twigg, E., Barkham, M., Bewick, B.M.m Mulhern, B., Connell, J. & Cooper, M. (2009) The Young Person's CORE: Development of a brief outcome measure for young people. Counselling and Psychotherapy Research, 9 (3).

Twigg, E., Cooper, M., Evans, C., Freire, E., Mellor-Clark, J., McInnes, B. & Barkham, M. (2016). Acceptability, reliability, referential distributions and sensitivity to change in the Young Person's Clinical Outcomes in Routine Evaluation (YP-CORE) outcome measure: replication and refinement. Child and Adolescent Mental Health, 21 (2), 115-123.

Kristjánsdóttir, H., Sigurðsson, B.H., Salkovskis, P., Ólason, D., Sigurdsson, E., Evans, C., Gylfadóttir, E.D. & Sigurðsson, J.F. (online pre-publication). Evaluation of the psychometric properties of the Icelandic version of the Clinical Outcomes in Routine Evaluation–Outcome Measure, its transdiagnostic utility and cross-cultural validation. Clinical Psychology and Psychotherapy.

Murray, A.L., McKenzie, K., Murray, K.R, Richelieu, M. (online pre-publication). Mokken scales for testing both pre- and postintervention: an analysis of the Clinical Outcomes in Routine Evaluation—Outcome Measure (CORE–OM) before and after counseling. Psychological Assessment.

Payne, N., Ciclitira, K., Starr, F., Marzono, L. (in press). Evaluation of long-term counselling at a community health service for women who are on a low income. Counselling and Psychotherapy Research.

Holmqvist, R., Philips, B. & Barkham, M. (2015). Developing practice-based evidence: Benefits, challenges, and tensions. Psychotherapy Research, 25(1), 25-31.

Biescad, M., Timulak, L. (2014). Measuring psychotherapy outcomes in routine practice: Examining Slovak versions of three commonly used outcome instruments. European Journal of Psychotherapy & Counselling, 16(2),140-162.

Di Bona, L., Saxon, D., Barkham, M., Dent-Brown, K. & Parry, G. (2014). Predictors of patient non-attendance at Improving Access to Psychological Therapy services demonstration sites. Journal of Affective Disorders, 169, 157-164.

Horton, M., Wright, N., Dyer, W., Wright-Hughes, A., Farrin, A., Mohammed, Z., Smith, J., Heyes, T., Gilbody, S. & Tennant, A. (2014). Assessing the risk of self-harm in an adult offender population: an incidence cohort study. Health Technology Assessment, 18(64).

Jenkins, P.E., Turner, H.M. (2014). An investigation into the psychometric properties of CORE-OM in patients with eating disorders. Counselling and Psychotherapy Research, 14(2), 102-110.

Jokic-Begic, N., Lauri Korajlija, A., Jurin, T. & Evans, C. (2014). Faktorska struktura, psihometrijske karakteristike i kritična vrijednost hrvatskoga prijevoda CORE-OM upitnika [Factor structure, psychometric properties and cut-off scores of Croatian version of Clinical Outcomes in Routines Evaluation – Outcome Measure. Psihologijske teme, 23(2), 265-288.


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