Ideation In Schizophrenia Research Articles

A Delusion Assessment Scale for Psychotic Major Depression: Reliability, Validity, and Utility

Although delusions are the hallmark of major depression with psychotic features, a scale to measure the intensity of beliefs across multiple delusional domains in this condition has been unavailable. The development and assessment of the Delusional Assessment Scale (DAS) are described. Scale items were selected initially based on previous studies of delusional ideation in schizophrenia. A three-point item to assess mood congruence was added. A 15-item scale was assessed in 92 subjects participating in the four-site collaborative study of the pharmacotherapy of major depression with psychotic features. Maximum likelihood method was used to determine scale factors. The internal consistency of these factors was determined. Comparisons between scale scores and ratings from the Brief Psychiatric Rating Scale (BPRS) (Overall and Gorham 1962) were used to assess convergent and discriminant validity. The data were fit by a five-factors model (impact, conviction, disorganization, bizarreness, and extension). Inter-rater reliability of the five factors ranged from .77 for conviction and .74 for impact to .37 for disorganization. Internal consistency for each of the five factors was > or =.72. Scores on specific domains were significantly correlated with the BPRS unusual thought content item and positive symptom subscale scores. The DAS is a reliable measure of 5 delusional domains.

The effect of an educational intervention on insight and suicidal ideation in schizophrenia

Researchers are increasingly recognizing the role of culture as a source of variation in many phenomena of central importance to consumer research. This review addresses a gap in cross-cultural consumer behavior literature by providing a review and conceptual analysis of the effects of culture on pre-behavioral processes (perception and cognition). The article highlights a series of important perceptual and cognitive differences across cultures and offers a new perspective of framing these differences among cultures—that of “culturally conditioned” perceptual and cognitive orientations. The article addresses several theoretical issues and suggests directions for future research as well as managerial implications.

Correlates of Suicide Attempts and Ideation in Schizophrenia

A group of 118 patients with a hospital diagnosis of schizophrenia was reviewed. The incidence of suicide attempts was significantly correlated with more frequent past psychiatric admissions, more frequent past diagnoses of schizophrenia, and poor work function. The apparent relationships could be spurious or based on a reversed causal sequence; for example, suicide attempts are likely to be followed by psychiatric admissions.