Daniel Freeman

PhD DClinPsy CPsychol FBPsS

Professor of Clinical Psychology

  • Lead, Oxford Cognitive Approaches to Psychosis (O-CAP)
  • NIHR Research Professor
  • Consultant Clinical Psychologist, Oxford Health NHS Foundation Trust
  • Founder of Oxford VR
  • Fellow, University College Oxford
  • Fellow, British Psychological Society

Follow Daniel Freeman on Twitter

Research Group: Oxford Cognitive Approaches to Psychosis (O-CAP)


Google Scholar 

BBC Radio 4 Series: A History of Delusions

The purpose of my work is to make significant advances in the understanding and treatment of mental health disorders, particularly 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 truly make a difference.

At the moment several randomised controlled treatment trials are in progress. This includes a test of a new targeted, personalised psychological treatment for persecutory delusions, called the Feeling Safe Programme. This is a translational treatment built upon advances by my research group in the theoretical understanding of paranoia. There are also a number of studies running that will lead to a greater understanding of the causes of psychotic experiences. The research is supported by the NHS National Institute of Health Research, UK Medical Research Council (MRC), and the Wellcome Trust.

I founded and am a non-executive board member of Oxford VR, a spinout company from the University. Oxford VR built on my research into the use of virtual reality to understand and treat psychological disorders. I founded the company in 2016 with Jason Freeman, Mel Slater, Bernhard Spanlang, and Mavi Sánchez-Vives.

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. The latest to appear is The Stressed Sex: Uncovering the Truth about Men, Women, and Mental Health, which sets out to answer a simple, but crucial, question: are rates of psychological disorder different for men and women? This important issue has been largely ignored in all the debates raging about gender differences.

Recent open access papers

Sleep disturbance and psychiatric disorders

Automated virtual reality cognitive therapy for patients with psychosis

Automated psychological therapy using virtual reality (VR) for patients with persecutory delusions

Coronavirus conspiracy beliefs, mistrust, and compliance with government guidelines in England

Automated psychological therapy using immersive VR for treatment of fear of heights

Virtual reality in the assessment, understanding, and treatment of mental health disorders

Treatable clinical intervention targets for patients with schizophrenia

The weeks before 100 persecutory delusions

The effects of improving sleep on mental health (OASIS)

Persecutory delusions: a cognitive perspective on understanding and treatment [pdf]

Suicidal ideation and behaviour in patients with persecutory delusions

The Dunn Worry Questionnaire and the Paranoia Worries Questionnaire: new assessments of worry

The revised Green et al., Paranoid Thoughts Scale (R-GPTS)

Virtual reality in the treatment of persecutory delusions

The concomitants of conspiracy concerns

Effects of cognitive behaviour therapy for worry on persecutory delusions (WIT)

Efficacy of cognitive behavioural therapy for sleep improvement in patients with persistent delusions and hallucinations (BEST)

Targeting recovery in persistent persecutory delusions

Advances in understanding and treating persecutory delusions

How cannabis causes paranoia

Height, social comparison, and paranoia: an immersive virtual reality experimental study

Testing the effect on persecutory delusions of using CBT to reduce negative cognitions about the self



Key publications

Recent publications

More publications