Daniel Freeman

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At least 10-15% of the general population regularly experience paranoid thoughts and persecutory delusions are a frequent symptom of psychosis. Persecutory ideation is a key topic for study. In this article the empirical literature on psychological processes associated with persecutory thinking in clinical and non-clinical populations is comprehensively(More)
BACKGROUND Previous studies of paranoia have assessed only limited numbers of paranoid thoughts, and have not considered the experience from a multidimensional perspective or examined the relationship between different suspicious thoughts. AIMS To assess a wide range of paranoid thoughts multidimensionally and examine their distribution, to identify the(More)
In the last 10 years a consensus has developed that the symptoms of psychosis may be better understood by linking the steps between the phenomenological experiences and social, psychological and neurobiological levels of explanation. Cognitive models of psychosis are an important link in this chain. They provide a psychological description of the phenomena(More)
A multifactorial model of the formation and maintenance of persecutory delusions is presented. Persecutory delusions are conceptualized as threat beliefs. The beliefs are hypothesized to arise from a search for meaning for internal or external experiences that are unusual, anomalous, or emotionally significant for the individual. The persecutory(More)
BACKGROUND Paranoia is increasingly being studied in clinical and non-clinical populations. However there is no multi-dimensional measure of persecutory ideas developed for use across the general population-psychopathology continuum. This paper reports the development of such a questionnaire: the 'Green et al. Paranoid Thought Scales'. The aim was to devise(More)
Methods.The theoretical approachesto delusions proposedby Frith and colleagues (` theory of mind’ de®cits), Garety and colleagues (multi-factorial, but involving probabilistic reasoning biases) and Bentall and colleagues (attributional style and self-discrepancies) are summarised. The ®ndings of empirical papers directly relevant to these proposals are(More)
The aim of the study was to elucidate the factors contributing to the severity and persistence of delusional conviction. One hundred participants with current delusions, recruited for a treatment trial of psychological therapy (PRP trial), were assessed at baseline on measures of reasoning, emotions, and dimensions of delusional experience. Reasoning biases(More)
BACKGROUND The objective of the study was to develop the cognitive understanding of persecutory delusions. It was hypothesized that safety behaviours contribute to the persistence of persecutory delusions by preventing disconfirmation. It was further hypothesized that emotional distress is associated with aspects of the content of delusions. An(More)
BACKGROUND Family intervention reduces relapse rates in psychosis. Cognitive-behavioural therapy (CBT) improves positive symptoms but effects on relapse rates are not established. AIMS To test the effectiveness of CBT and family intervention in reducing relapse, and in improving symptoms and functioning in patients who had recently relapsed with(More)
BACKGROUND Despite growing evidence of the effectiveness of cognitive-behavioural therapy (CBT) for psychosis, typically only about 50% of patients show a positive response to treatment. This paper reports the first comprehensive investigation of factors which predict treatment outcome. METHOD In a randomised controlled trial of CBT for(More)