Nick Firth, BSc (UoS), BA (UoS), DClinPsy (UoS)


Mental Health Research Unit
School of Health and Related Research (ScHARR)
University of Sheffield
Regent Court, 30 Regent Street
Sheffield S1 4DA

Office: 3038

Tel: (+44) (0) 114 222 6387
Fax: (+44) (0)114 222 0749

Email: /

ORCiD: 0000-0003-1984-6869


I have studied and worked at the University of Sheffield for over ten years, across ScHARR, Psychology and Computer Science. I am currently a research associate in the Mental Health Research Unit, and I am part of the Centre for Psychological Services Research. I am a qualified clinical psychologist. I work clinically with adults with long term conditions, at the Derbyshire Community Health Services NHS Foundation Trust. I am also the Research Champion for the Trust’s Health, Wellbeing and Inclusion division. I am working on developing my career as a clinical academic.

Research interests

  • Effectiveness of psychological therapy, therapists, and providers.
  • Unexplained differences between therapists in clinical outcomes (aka therapist effects).
  • The impact of explanatory variables on therapy outcomes – particularly regarding deprivation.
  • Multilevel modelling methods.
  • Analysis of large N data.


  • Provider and sector variation in psychotherapy outcomes (with David Saxon and Michael Barkham)
  • Change in magnitude of therapist effects over time (with Rob Johns, Michael Barkham, Stephen Kellett, and David Saxon)
  • The relationship between socioecomic deprivation and psychotherapy outcomes (with Megan Finegan and Jaime Delgadillo)


  • Bellhouse, F., Hague, B., & Firth, N. (2016). Competency assessment: the supervisees’ perspective. In D. Pickvance (Ed.), Cognitive Analytic Supervision: A relational approach. Routledge.

Journal articles