Dr Siddaway is interested in conducting and supervising research that improves the understanding, prevention, assessment, and treatment of psychological problems. His research particularly focuses on suicide, nonsuicidal self-injury, trauma, and the conceptualisation of psychological problems. He has particular expertise in systematic reviews, meta-analysis, psychometrics, and scale development and validation.

Between 2014 and 2017, Dr Siddaway was awarded a prestigious MRC Clinical Research Training Fellowship. This research involved developing the two most comprehensive self-report questionnaires of suicide attempt and nonsuicidal self-injury/self-harm beliefs currently available. Dr Siddaway hopes that developing these new self-report scales will improve the understanding, prediction, and treatment of self-injurious behaviours, potentially saving lives. He is currently preparing a number of articles using data collected during this Fellowship.

Dr Siddaway has provided peer-reviews for ~40 journals, including top-tier outlets such as PNAS and The Lancet Psychiatry. He has been invited to grant review for the ESRC, act as external PhD examiner at two Universities, and been appointed to the Editorial Advisory Board of the Journal of Traumatic Stress for two terms (2017-2023). He has supervised six doctoral students, two masters students, and three research assistants. He has extensive teaching/training experience in clinical and academic settings and experience of public engagement. In 2015, he was interviewed regarding mindfulness based cognitive therapy for Radio 4’s All in the Mind because his 2013 article on this topic is one of the only published critiques of the quality of the research that has been conducted in this area. 

He is happy to receive enquiries from students seeking research supervision.


  • Siddaway, A. P., Meiser-Stedman, R., Chester, V., Finn, J., O'Leary, C., Peck, D., & Loveridge, C. (2022). Trauma-focused guided self-help interventions for posttraumatic stress disorder: A meta-analysis of randomised controlled trials. Depression and Anxiety, 39, 675–685. PDF

  • Siddaway, A. P. (2022). We need to talk about Long-COVID. The Psychologist. ARTICLE

  • Siddaway, A. P. Holm-Denoma, J., Witte, T. K., & Ruscio, J. (2021). Re-examining the latent structure of suicidal thoughts using taxometric analysis: Implications for testing ideation to action theoretical models of suicidal thoughts and behavior. Psychological Assessment, 33, 243–254. PDFSUPPLEMENT

  • Siddaway, A. P. (2020). Adverse childhood experiences (ACEs) research: Commonalities with similar, arguably identical literatures and the need for integration. British Journal of Psychiatry, 217, 397-398. PDF

  • Siddaway, A. P., Quinlivan, L., Kapur, N., O’Connor, R. C., & de Beurs, D. (2020). Cautions, concerns, and future directions for using machine learning in relation to mental health problems and clinical and forensic risks: A brief comment on “Model complexity improves the prediction of nonsuicidal self-injury” (Fox et el., 2019). Journal of Consulting and Clinical Psychology, 88, 384-387. PDF

  • Kuppens, S., Moore, S. C., Gross, V., Lowthian, E., & Siddaway, A. P. (2019). The enduring effects of parental alcohol, tobacco, and drug use on child wellbeing: A multi-level meta-analysis. Development and Psychopathology, 5, 1-14. PDF

  • Siddaway, A. P., Wood, A. M., & Hedges, L. V. (2019). How to do a systematic review: A best practice guide to conducting and reporting narrative reviews, meta-analyses, and meta-syntheses. Annual Review of Psychology, 70, 747-770. PDF

  • Siddaway, A. P., Wood, A. M., O’Carroll, R. E., & O’Connor, R. C. (2019). Characterizing self-injurious cognitions: Development and validation of the Suicide Attempt Beliefs Scale (SABS) and the Nonsuicidal Self-Injury Beliefs Scale (NSIBS). Psychological Assessment, 31, 592-608. PDF,  SUPPLEMENT,  SABS-39+SCORER,  SABS-26+SCORER

  • Siddaway, A. P., Taylor, P. J., & Wood, A. M. (2018). Re-conceptualizing anxiety as a continuum that ranges from high calmness to high anxiety: The joint importance of reducing distress and increasing well-being. Journal of Personality and Social Psychology, 114, e1-e11. PDF

  • Siddaway, A. P., Wood, A. M., & Taylor, P. J. (2017). The Centre for Epidemiologic Studies-Depression (CES-D) scale measures a continuum from well-being to depression: Testing two key predictions of Positive Clinical Psychology. Journal of Affective Disorders, 213, 180-186. PDF

  • Siddaway, A. P., & Rafetseder, E. (2015). An agenda for conceptualising and researching praise and criticism. Journal of Paediatrics and Child Health, 52, 98-99. PDF

  • Siddaway, A. P., Taylor, P. J., Wood, A. M., & Schulz, J. (2015). A meta-analysis of the role of perceptions of defeat and entrapment in depression, anxiety problems, posttraumatic stress disorder, and suicidality. Journal of Affective Disorders, 184, 149-159.  PDF

  • Siddaway, A. P., Wood, A. M., Schulz, J., & Trickey, D. (2015). Evaluation of the CHUMS child bereavement group programme: A pilot study examining statistical and clinical change. Death Studies, 39, 99-110. PDF

  • Siddaway, A. P., Wood, A. M., & Cartwright-Hatton, S. (2014). Involving parents in Cognitive Behavioural Therapy for child anxiety problems: A case study. Clinical Case Studies, 13, 359-372. PDF

  • Keville, S., Siddaway, A. P., Rhodes, L., Horley, N., Brown,. R., Dove, L., & White, L.  (2013). Learning on the front line: Can personal development during problem-based learning facilitate professional development in Trainee Clinical Psychologists? Reflective Practice: International and Multidisciplinary Perspectives, 14, 717-728. PDF

  • Siddaway, A. P., & Wood, A. M. (2013). Recommendations for improving mindfulness based cognitive therapy trials. Psychiatry Research, 207, 229-231. PDF

  • Trickey, D., Siddaway, A. P., Meiser-Steadman, R., Serpell, L., & Field, A. P., (2012). A meta-analysis of risk factors for posttraumatic stress disorder in children and adolescents. Clinical Psychology Review, 32, 122-138. PDF

Published letters

  • Siddaway, A. P. (2020). Multidisciplinary research priorities for the COVID-19 pandemic. The Lancet Psychiatry, 7, e42. PDF

  • Siddaway, A. P. (2020). Multidisciplinary research priorities for the COVID-19 pandemic. The Lancet Psychiatry, 7, e43. PDF

  • Siddaway, A. P. (2014). Measurement of depression and anxiety problems has not kept up with theory and evidence. British Journal of Psychiatry eLetter. PDF