Daniel Freeman

Daniel Freeman

Supernumerary Fellow; Professor of Clinical Psychology; Medical Research Council Senior Clinical Fellow

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My central role is clinical research and treatment. Each year I teach on a third year advanced option in Experimental Psychology:  Developing and Disseminating New and Effective Psychological Therapies for Anxiety Disorders and Psychosis (Profs Clark, Ehlers, Freeman).


The purpose of my research work is to make significant advances in the psychological understanding and treatment of delusions and hallucinations. Drawing on a variety of approaches, including epidemiological studies, psychological experiments, clinical trials, and a ground-breaking virtual reality laboratory, I use the theoretical knowledge to develop carefully tested psychological treatments that will make a difference. This work is funded by the NHS National Institute for Health Research (NIHR), Medical Research Council (MRC), and the Wellcome Trust. I’m also committed to making knowledge of the best psychological research and treatments for mental health problems available to the general public. Therefore I’ve written a number of popular science books on mental health issues.

Selected Publications


Freeman, D., Freeman, J. & Garety, P. (2016). Overcoming Paranoid and Suspicious Thoughts. Second Edition. London: Robinson.

Freeman, D. & Freeman, J. (2013). The Stressed Sex: Uncovering the Truth about Men, Women, and Mental Health. Oxford: Oxford University Press.

Freeman, D. & Freeman, J. (2012). Anxiety: A Very Short Introduction. Oxford: Oxford University Press.

Freeman, D. & Freeman, J. (2012). You Can Be Happy: The Scientifically Proven Way to Change How You Feel. Harlow: Pearson


Freeman, D., Sheaves, B., Goodwin, G., Yu, L-M., Nickless, A., Harrison, P., Emsley, R., Luik, A., Foster, R., Wadekar, V., Hinds, C., Gumley, A., Jones, R., Lightman, S., Jones, S., Bentall, R., Kinderman, P., Rowse, G., Brugha, T., Blagrove, M., Gregory, A., Fleming, L., Walklet, E., Glazebrook, Davies, E., Hollis, C., Haddock, G., John, B., Coulson, M., Fowler, D., Pugh, K., Cape, J. et al (2017). The effects of improving sleep on mental health (OASIS): a randomised controlled trial with mediation analysis. The Lancet Psychiatry.

Freeman, D., Reeve, S., Robinson, A., Ehlers, A., Clark, D., Spanlang, B. & Slater, M. (2017). Virtual reality in the assessment, understanding, and treatment of mental health disorders. Psychological Medicine.

Freeman, D. (2016). Persecutory delusions: a cognitive perspective on understanding and treatment. The Lancet Psychiatry, 3, 685-692.

Freeman, D., Bradley, J., Antley, A., Bourke, E., DeWeever, N., Evans, N., Černis, E., Sheaves, B., Waite, F., Dunn, G., Slater, M., & Clark, D. (2016). Virtual reality in the treatment of persecutory delusions. British Journal of Psychiatry, 209, 62-67.

Freeman D., Dunn, G., Startup, H., Pugh, K., Cordwell, J., Mander, H., Cernis, E., Wingham, G., Shirvell, K., & Kingdon, D. (2015) Effects of cognitive behaviour therapy for worry on persecutory delusions in patients with psychosis (WIT): a parallel, single-blind, randomised controlled trial with a mediation analysis. The Lancet Psychiatry, 2, 305-313.

Freeman, D., Waite, F., Startup, H., Myers, E., Lister, E., McInerney, J., Harvey, A., Geddes, J., Zaiwalla, Z., Luengo-Fernandez, R., Foster, R., Clifton, L, & Yu, L-M. (2015). Efficacy of cognitive behavioural therapy for sleep improvement in patients with persistent delusions and hallucinations (BEST): a prospective, assessor-blind, randomised controlled pilot study. The Lancet Psychiatry, 2, 975-983.

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