Choosing negative symptom instruments: issues of representation and redundancy

• Published in: Psychiatry research Vol. 87; no. 1; pp. 47 - 56
• Main Authors: Welham, Joy, Stedman, Terry, Clair, Anne
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 30.07.1999; Elsevier
• Subjects: Adult; Behavioral Symptoms - classification; Behavioral Symptoms - diagnosis; Biological and medical sciences; Brief Psychiatric Rating Scale; Chi-Square Distribution; Female; Humans; Male; Medical sciences; Negative syndrome; Positive and Negative Syndrome Scale; Psychiatric Status Rating Scales; Psychology. Psychoanalysis. Psychiatry; Psychometrics. Diagnostic aid systems; Psychopathology. Psychiatry; Redundancy analysis; Scale for the Assessment of Negative Symptoms; Schizophrenia; Schizophrenia - classification; Schizophrenic Psychology; Statistics as Topic - methods; Techniques and methods; Schizophrenia; Scale for the Assessment of Negative Symptoms; Brief Psychiatric Rating Scale; Positive and Negative Syndrome Scale; Negative syndrome; Redundancy analysis; Psychosis; Human; Symptomatology; Brief Psychiatric Rating Scale Overall Gorham; Evaluation scale; Negative symptom; Psychometrics; Diagnosis; Positive and Negative Syndrome Scale Kay et al; Comparative study

Assuming that the negative syndrome in schizophrenia may be multidimensional, this study examines how conclusions about the structure of negative symptoms may be influenced by the particular rating scale used, the level of data reduction used (such as total, subscale and individual item scores), and...