The heterogeneous structure of schizotypal personality disorder: item-level factors of the Schizotypal Personality Questionnaire and their associations with obsessive-compulsive disorder symptoms, dissociative tendencies, and normal personality.

A. Raine et al.'s (1994) 3-factor scheme is currently the most widely accepted model of schizotypal personality disorder (SPD). Factor analytic studies of the Schizotypal Personality Questionnaire (SPQ; A. Raine, 1991) subscales, which represent the 9 Diagnostic and Statistical Manual of Mental Disorders (DSM) criteria for SPD, have provided the model's primary support. The use of only 9 modeled variables, however, limits the number of factors that can be extracted. To explicate this structure more fully, the authors conducted item-level factor analyses of the SPQ in a large student sample that completed the instrument twice within a 2-week interval. The authors' analyses failed to support either the 3-factor model of SPD or the 9 existing DSM-based subscales of the SPQ. Instead, 5 replicable dimensions emerged that capture recurrent symptom pairings found in the broader SPD literature: Social Anhedonia, Unusual Beliefs and Experiences, Social Anxiety, Mistrust, and Eccentricity/Oddity. These factors are only weakly correlated with each other and show differential correlational patterns with the Big Five personality traits, dissociative tendencies, and symptoms of obsessive-compulsive disorder. Moreover, they are congruent with dimensional models of personality psychopathology. Implications for SPD in DSM-V are discussed.

[1]  David Watson,et al.  Structures of personality and their relevance to psychopathology: II. Further articulation of a comprehensive unified trait structure. , 2008, Journal of personality.

[2]  Lee Anna Clark,et al.  Assessment and diagnosis of personality disorder: perennial issues and an emerging reconceptualization. , 2007, Annual review of psychology.

[3]  T. Trull,et al.  Plate tectonics in the classification of personality disorder: shifting to a dimensional model. , 2007, The American psychologist.

[4]  Timothy C. Bates,et al.  Confirmatory Factor Analysis of the Three-Factor Structure of the Schizotypal Personality Questionnaire and Chapman Schizotypy Scales , 2006, Journal of personality assessment.

[5]  J. Kerns Schizotypy facets, cognitive control, and emotion. , 2006, Journal of abnormal psychology.

[6]  John P. Baker,et al.  Emotional correlates of the different dimensions of schizotypal personality disorder. , 2006, Journal of abnormal psychology.

[7]  H. Merckelbach,et al.  Subclinical dissociation, schizotypy, and traumatic distress , 2006 .

[8]  L. Clark Temperament as a unifying basis for personality and psychopathology. , 2005, Journal of abnormal psychology.

[9]  Robert F Krueger,et al.  Continuity of axes I and II: toward a unified model of personality, personality disorders, and clinical disorders. , 2005, Journal of personality disorders.

[10]  L. Koran,et al.  Obsessive-compulsive disorder (OCD) with schizotypy vs. schizophrenia with OCD: diagnostic dilemmas and therapeutic implications. , 2005, Journal of psychiatric research.

[11]  Timothy C. Bates,et al.  Reliability and validity of two Likert versions of the Schizotypal Personality Questionnaire (SPQ) , 2005 .

[12]  D. Watson,et al.  Development and Validation of the Schedule of Compulsions, Obsessions, and Pathological Impulses (SCOPI) , 2005, Assessment.

[13]  Timothy J Trull,et al.  Categorical and dimensional models of personality disorder. , 2005, Annual review of clinical psychology.

[14]  Kristian E Markon,et al.  PERSONALITY PROCESSES AND INDIVIDUAL DIFFERENCES Delineating the Structure of Normal and Abnormal Personality: An Integrative Hierarchical Approach , 2004 .

[15]  D. Watson Stability versus change, dependability versus error: Issues in the assessment of personality over time , 2004 .

[16]  D. Watson,et al.  Symptom subtypes of obsessive-compulsive disorder and their relation to dissociation. , 2004, Journal of anxiety disorders.

[17]  C. Stefanis,et al.  Factorial composition of self-rated schizotypal traits among young males undergoing military training. , 2004, Schizophrenia bulletin.

[18]  A. Raine,et al.  The three-factor model of schizotypal personality: invariance across age and gender , 2003 .

[19]  D. Watson Investigating the construct validity of the dissociative taxon: stability analyses of normal and pathological dissociation. , 2003, Journal of abnormal psychology.

[20]  P. Salkovskis,et al.  The Obsessive-Compulsive Inventory: development and validation of a short version. , 2002, Psychological assessment.

[21]  Alessandro Rossi,et al.  Schizotypal dimensions in normals and schizophrenic patients: a comparison with other clinical samples , 2002, Schizophrenia Research.

[22]  J. Suhr,et al.  Factor versus cluster models of schizotypal traits. I: A comparison of unselected and highly schizotypal samples , 2001, Schizophrenia Research.

[23]  D. Watson,et al.  Dissociations of the night: individual differences in sleep-related experiences and their relation to dissociation and schizotypy. , 2001, Journal of abnormal psychology.

[24]  D. Lynam,et al.  Using the five-factor model to represent the DSM-IV personality disorders: an expert consensus approach. , 2001, Journal of abnormal psychology.

[25]  T. Trull,et al.  A structured interview for the assessment of the Five-Factor Model of personality: facet-level relations to the axis II personality disorders. , 2001, Journal of personality.

[26]  L. Clark,et al.  Predicting dimensions of personality disorder from domains and facets of the Five-Factor Model. , 2001, Journal of personality.

[27]  R. Roth,et al.  The relationship between schizotypal and obsessive-compulsive features in university students , 2000 .

[28]  L. Clark,et al.  Toward DSM-V and the classification of psychopathology. , 2000, Psychological bulletin.

[29]  G. Caprara,et al.  Personality: Individual Differences , 2000 .

[30]  M. Karayiorgou,et al.  Evidence of a schizotypy subtype in OCD. , 2000, Journal of psychiatric research.

[31]  S. Mednick,et al.  Three-factor model of schizotypal personality: invariance across culture, gender, religious affiliation, family adversity, and psychopathology. , 2000, Schizophrenia bulletin.

[32]  Duane T. Wegener,et al.  Evaluating the use of exploratory factor analysis in psychological research. , 1999 .

[33]  R. MacCallum,et al.  Sample size in factor analysis. , 1999 .

[34]  Lee Anna Clark,et al.  Temperament: A new paradigm for trait psychology. , 1999 .

[35]  S. Srivastava,et al.  The Big Five Trait taxonomy: History, measurement, and theoretical perspectives. , 1999 .

[36]  C. K. Hsiao,et al.  Schizotypy in community samples: the three-factor structure and correlation with sustained attention. , 1997, Journal of abnormal psychology.

[37]  J. Levin,et al.  Mixed handedness and schizotypal personality in a non-clinical sample—The role of task demand , 1997 .

[38]  F. Macciardi,et al.  The structure of DSM-III-R schizotypal personality disorder diagnosed by direct interviews. , 1997, Schizophrenia bulletin.

[39]  Philip D. Harvey,et al.  The factor structure of schizotypal symptoms in a clinical population. , 1996, Schizophrenia bulletin.

[40]  D. Watson,et al.  Constructing validity: Basic issues in objective scale development , 1995 .

[41]  F. Floyd,et al.  Factor analysis in the development and refinement of clinical assessment instruments. , 1995 .

[42]  D. Watson,et al.  Structures of personality and their relevance to psychopathology. , 1994, Journal of abnormal psychology.

[43]  Paul T. Costa,et al.  Personality Disorders and the Five-Factor Model of Personality , 1994 .

[44]  Dc Washington Diagnostic and Statistical Manual of Mental Disorders, 4th Ed. , 1994 .

[45]  A. Raine,et al.  Cognitive-perceptual, interpersonal, and disorganized features of schizotypal personality. , 1994, Schizophrenia bulletin.

[46]  T. Trull DSM-III-R personality disorders and the five-factor model of personality: an empirical comparison. , 1992, Journal of abnormal psychology.

[47]  L. R. Goldberg THE DEVELOPMENT OF MARKERS FOR THE BIG-FIVE FACTOR STRUCTURE , 1992 .

[48]  B. Clementz,et al.  Familial prevalence and coaggregation of schizotypy indicators: a multitrait family study. , 1991, Journal of abnormal psychology.

[49]  N C Andreasen,et al.  The Distinction of Positive and Negative Symptoms , 1991, British Journal of Psychiatry.

[50]  A. Gorman,et al.  The structure of schizotypy: A pilot multitrait twin study , 1991, Psychiatry Research.

[51]  A. Raine The SPQ: a scale for the assessment of schizotypal personality based on DSM-III-R criteria. , 1991, Schizophrenia bulletin.

[52]  Paul E. Meehl,et al.  Toward an Integrated Theory of Schizotaxia, Schizotypy, and Schizophrenia , 1990 .

[53]  J. S. Wiggins,et al.  Conceptions of personality disorders and dimensions of personality. , 1989 .

[54]  K. Kendler,et al.  The Structured Interview for Schizotypy (SIS): a preliminary report. , 1989, Schizophrenia bulletin.

[55]  M. Drake Diagnostic and Statistical Manual of Mental Disorders (3rd ed. rev.) , 1988 .

[56]  E. Bernstein,et al.  Development, reliability, and validity of a dissociation scale. , 1986, The Journal of nervous and mental disease.

[57]  L. J. Chapman,et al.  Social anhedonia in the prediction of psychosis proneness. , 1985, Journal of abnormal psychology.

[58]  M. Zimmerman,et al.  A structured interview for the DSM-III personality disorders. A preliminary report. , 1985, Archives of general psychiatry.

[59]  G. Claridge,et al.  Schizotypy and hemisphere function—I: Theoretical considerations and the measurement of schizotypy , 1984 .

[60]  L. J. Chapman,et al.  Magical ideation as an indicator of schizotypy. , 1983, Journal of consulting and clinical psychology.

[61]  R. Michels,et al.  Diagnostic and Statistical Manual of Mental Disorders, 3rd ed , 1981 .

[62]  L. J. Chapman,et al.  Body-image aberration in Schizophrenia. , 1978, Journal of abnormal psychology.

[63]  H. Eysenck,et al.  Manual of the Eysenck personality questionnaire , 1975 .