… Alastair G. Cardno is a senior lecturer in neuropsychiatric genetics at the Unviersity of
Wales College of Medicine, Cardiff, UK. His main research interest is the genetics of clinical …

Background Twin studies of bipolar affective disorder (BPD) have either been small or have
not used explicit diagnostic criteria. There has been little use of genetic model fitting and no …

Background Previous twin studies have supported a genetic contribution to the major categories
of psychotic disorders, but few of these have employed operational diagnostic criteria, …

OBJECTIVE: Biometrical model fitting was applied to clinical data from twins to investigate
whether operationally defined schizophrenic, schizoaffective, and manic syndromes share …

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 …

We aimed to characterize multiple psychotic experiences, each assessed on a spectrum of
severity (ie, quantitatively), in a general population sample of adolescents. Over five …

Importance The onset of psychosis is usually preceded by psychotic experiences (PE). Little
is known about the etiology of PE and whether the degree of genetic and environmental …

Context Traditionally, the search for genes involved in predisposition to major psychoses
has proceeded with separate studies of schizophrenia and bipolar disorder. However, twin …

Background Art therapy is defined by the British Association of Art Therapists as:“a form of
psychotherapy that uses art media as its primary mode of communication. Clients who are …

BackgroundEvidence exists for an association between aggression and schizophrenia.
Although the aetiology of aggression is multifactorial, three studies have reported associations …