Stability trends and longitudinal correlations of negative and positive syndromes within a three‐year follow‐up of initially hospitalized schizophrenics
- 1 December 1994
- journal article
- Published by Wiley in Acta Psychiatrica Scandinavica
- Vol. 90 (6) , 405-412
- https://doi.org/10.1111/j.1600-0447.1994.tb01615.x
Abstract
Our study investigates whether the distinction between positive and negative symptoms in schizophrenia – as discussed in the literature – can be confirmed by a factor analysis and whether such a distinction proves stability over time. In a further step, symptom factors are correlated to different external variables for the purpose of validation. Processed data cover 36 months obtained from a prospective 5-year follow-up study of 163 initially hospitalized schizophrenics. The results permit for dividing the symptoms into a total of five factors – two representing positive and negative symptoms and one representing the general neurotic syndrome. This factor structure proved to be stable over time. Correlations between symptom factors and external variables justify a trait-interpretation of the negative factor anhedonia.Keywords
This publication has 13 references indexed in Scilit:
- Long-Term Monomorphism of Negative and Positive Schizophrenic EpisodesPublished by Springer Nature ,1991
- Are There Two Types of Schizophrenia? True Onset and Sequence of Positive and Negative Syndromes Prior to First AdmissionPublished by Springer Nature ,1991
- Zur Stabilität negativer und positiver SyndromatikPublished by Springer Nature ,1990
- Prediction of outcome and utilization of medical services in a prospective study of first onset schizophrenicsArchiv Fur Psychiatrie Und Nervenkrankheiten, 1986
- The Two-syndrome Concept: Origins and Current StatusSchizophrenia Bulletin, 1985
- Negative Symptoms in SchizophreniaArchives of General Psychiatry, 1982
- Measurement of Premorbid Adjustment in Chronic SchizophreniaSchizophrenia Bulletin, 1982
- Scales for physical and social anhedonia.Journal of Abnormal Psychology, 1976
- Scales for physical and social anhedonia.Journal of Abnormal Psychology, 1976
- Schizotaxia, schizotypy, schizophrenia.American Psychologist, 1962