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A factorial study of schizophrenia
Author(s) -
Jonsson Henrik
Publication year - 1975
Publication title -
scandinavian journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 72
eISSN - 1467-9450
pISSN - 0036-5564
DOI - 10.1111/j.1467-9450.1975.tb00172.x
Subject(s) - normality , psychology , schizophrenia (object oriented programming) , factorial , test (biology) , factorial analysis , clinical psychology , psychosis , psychiatry , statistics , mathematics , mathematical analysis , paleontology , biology
.— A Q‐factor analysis of a group of normal and schizophrenic subjects was performed in order to explore the domain of schizophrenia and to test the differential validity of a test battery. One normality factor and four factors of schizophrenia were isolated. A cross‐validation using a new sample of normal and schizophrenic subjects was carried out. The normality factor was then used as a basis for predicting group membership for the new persons. The result was a correct placement of the subjects in the normal or schizophrenic category. The four factors of schizophrenia‐at least two of which were found to be descriptively relevant and related to independent diagnostic criteria‐required further verification.