Objective: Research and clinical translation in schizophrenia is limited by inconsistent
definitions of treatment resistance and response. To address this issue, the authors …

Background Approximately 188 million people use cannabis yearly worldwide, and it has
recently been legalised in 11 US states, Canada, and Uruguay for recreational use. The …

Abstract The Peters et al. Delusions Inventory (PDI) was designed to measure delusional
ideation in the normal population, using the Present State Examination as a template. The …

Test-based psychological assessment has been significantly affected by the health care
revolution in the United States during the past two decades. Despite new limitations on …

We analyzed the psychometric properties of the Positive and Negative Syndrome Scale
(PANSS) in a sample of 100 DSM-III-R schizophrenic patients. Our findings coincided with …

Objective: Impairments in laboratory tasks of metacognition appear to be associated with
symptoms, functioning, and neurocognition in schizophrenia. We sought to replicate these …

The Positive and Negative Syndrome Scale (PANSS) is a widely used instrument for
measuring severe psychopathology in adult patients with schizophrenia. Data, primarily on …

A five-component model of schizophrenia has been presented by Kay and Sevy based upon
an analysis of the Positive and Negative Syndrome Scale. Kay and Sevy found factorial …

Although the benefits of exercise are well documented, few published research studies have
examined exercise in persons with schizophrenia. This pilot examined a 16-week walking …

Background Cognitive deficits are a major determinant of social and occupational
dysfunction in schizophrenia. In this study, we determined whether neurocognitive …