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The multidimensionality of schizotypy
M G Vollema1, R J van den Bosch
1Veldwijk Psychiatric Hospital, Ermelo, The Netherlands.
Schizophrenia Bulletin
|January 1, 1995
Summary
Schizotypy is a multidimensional trait, with studies supporting Positive and Negative Schizotypy factors. These findings aid in understanding schizotypal traits and their relation to schizophrenia symptoms.
Area of Science:
- Psychology
- Psychiatry
- Behavioral Science
Background:
- Schizotypy is a personality construct related to schizophrenia.
- Previous research has utilized self-report scales to measure schizotypy.
- Factor-analytic studies aim to elucidate the underlying structure of schizotypy.
Purpose of the Study:
- To review factor-analytical studies of self-report schizotypy scales.
- To examine the multidimensional structure of schizotypy.
- To discuss the construct validity and implications of schizotypal traits.
Main Methods:
- Review of factor-analytical studies on schizotypy scales.
- Analysis of construct validity through clinical and external validation studies.
- Comparison of schizotypal traits with schizophrenic symptoms and normal personality.
Main Results:
- Factor analysis suggests schizotypy is multidimensional, comprising three or four factors: Positive Schizotypy, Negative Schizotypy, Nonconformity, and possibly Social Anxiety/Cognitive Disorganization.
- Positive and Negative Schizotypy factors show strong construct validity.
- Nonconformity and Social Anxiety/Cognitive Disorganization factors currently lack robust validation support.
Conclusions:
- Schizotypy is best understood as a multidimensional construct, with factor-specific scales being appropriate measurement tools.
- The multidimensionality of schizotypal traits parallels that of schizophrenic symptoms.
- Further research is needed to clarify the role and validity of all identified schizotypal factors and their relationship to personality.