Purpose Persecutory delusions are a central psychotic experience, at the severe end of a
paranoia spectrum in the general population. The aim of the review is to provide an …

Background Sleep dysfunction is extremely common in patients with schizophrenia. Recent
research indicates that sleep dysfunction may contribute to psychotic experiences such as …

Background Sleep difficulties might be a contributory causal factor in the occurrence of
mental health problems. If this is true, improving sleep should benefit psychological health …

Sleep disturbance is known to be associated with psychosis, but sleep disorders (eg,
insomnia, nightmare disorder, sleep apnea) have rarely been investigated. We aimed to …

There is substantial evidence for partial overlap of genetic influences on schizophrenia and
bipolar disorder, with family, twin, and adoption studies showing a genetic correlation …

Importance Exposure to bullying is associated with poor mental health. However, the degree
to which observed associations reflect direct detrimental contributions of exposure to …

Objective To investigate, by systematically reviewing the literature, whether the attention-
deficit/hyperactivity disorder (ADHD) polygenic risk score (PRS) associates with ADHD and …

Background There is a large clinical need for improved treatments for patients with
persecutory delusions. We aimed to test whether a new theoretically driven cognitive …

Adolescence and early adulthood (collectively categorized as “young people”) is a
transitional period associated with a number of key physiological, social and psychological …

Our view is that insomnia may be a causal factor in the occurrence of psychotic experiences
such as paranoia and hallucinations. However, the causal relationship is not established …