Schizophrenia Research
Volume 65, Issue 2 , Pages 153-158 , 15 December 2003

Self-reported schizotypy and bipolar disorder: demonstration of a lack of specificity of the Kings Schizotypy Questionnaire

  • J. Heron

      Affiliations

    • Division of Neuroscience, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham B15 2QZ, UK
  • ,
  • I. Jones

      Affiliations

    • Division of Neuroscience, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham B15 2QZ, UK
  • ,
  • J. Williams

      Affiliations

    • Department of Psychological Medicine, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XN, UK
  • ,
  • M.J. Owen

      Affiliations

    • Department of Psychological Medicine, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XN, UK
  • ,
  • N. Craddock

      Affiliations

    • Division of Neuroscience, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham B15 2QZ, UK
  • ,
  • L.A. Jones

      Affiliations

    • Corresponding Author InformationCorresponding author. Tel.: +44-121-678-2361; fax: +44-121-678-2351.
    • Division of Neuroscience, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham B15 2QZ, UK

Received 7 August 2002 ,Accepted 24 December 2002.

References 

  1. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). 4th ed.. Washington, DC: APA; 1994;
  2. Bennett P, Segurado R, Jones I, et al.  The Wellcome Trust UK–Irish bipolar affective disorder sibling–pair genome screen: first stage report. Mol. Psychiatry. 2002;7(2):189–200
  3. Chapman LJ, Chapman JP, Kwapil TR, et al.  Putatively psychosis-prone subjects 10 years later. J. Abnorm. Psychol. 1994;103:171–183
  4. Claridge GS. “The schizophrenias as nervous types” revisited. Br. J. Psychiatry. 1987;151:735–743
  5. Claridge G, Beech AR. Schizotypy and lateralised negative priming in schizophrenics' and neurotics' relatives. Pers. Individ. Differ. 1996;20:193–199
  6. Claridge G, McCreery C, Mason O, et al.  The factor structure of schizotypal traits: a large replication study. Br. J. Clin. Psychol. 1996;35:103–115
  7. Clementz BA, Grove WM, Katsanis J, Iacono WG. Psychometric detection of schizotypy: perceptual aberration and physical anhedonia in relatives of schizophrenics. J. Abnorm. Psychol. 1991;100:607–612
  8. Cohen J. Weighted kappa: nominal scale agreement with provision for scaled disagreement or partial credit. Psychol. Bull. 1968;70:213–220
  9. Craddock N, Gill M. The Wellcome Trust UK–Irish bipolar sib pair study: first stage genome screen. Mol. Psychiatry. 1999;4:S21
  10. Eysenck HJ, Eysenck SBG. Manual of the Eysenck Personality Questionnaire. London: Hodder and Stoughton; 1975;
  11. Farmer AE, McGuffin P, Gottesman II. Twin concordance for DSM III schizophrenia: scrutinising the validity of the definition. Arch. Gen. Psychiatry. 1987;44:634–641
  12. Gilvarry CM, Russell A, Hemsley D, et al.  Neuropsychological performance and spectrum personality traits in the relatives of patients with schizophrenia and affective psychosis. Psychiatry Res. 2001;101:89–100
  13. Gottesman II, Shields J. A polygenic theory of schizophrenia. Proc. Natl. Acad. Sci. U. S. A. 1967;58:199–205
  14. Grove WM, Lebow BS, Clementz BA, et al.  Familial prevalence and coaggregation of schizotypy indicators: a multitrait family study. J. Abnorm. Psychol. 1991;100:115–121
  15. Ingraham LJ. Family-genetic research and schizotypal personality. In:  Raine A, et al. editor. Schizotypal Personality. Cambridge: Cambridge Univ. Press; 1995;p. 19–42
  16. Ingraham LJ, Kety SS. Schizophrenia spectrum disorders. In:  Tsuang MT,  Simpson JC editor. Handbook of Schizophrenia: Nosology, Episodemiology and Genetics of Schizophrenia. Amsterdam: Elsevier; 1987;p. 117–137
  17. Jones LA, Cardno AG, Murphy KC, et al.  The Kings Schizotypy Questionnaire as a quantitative measure of schizophrenia liability. Schizophr. Res. 2000;45:213–221
  18. Katsanis J, Iacono WG, Beiser M. Anhedonia and perceptual aberration in first-episode psychotic patients and their relatives. J. Abnorm. Psychol. 1990;99:202–206
  19. Kendell RE, Brockington IF. The identification of disease entities and the relationship between schizophrenic and affective psychosis. Br. J. Psychiatry. 1980;137:324–331
  20. Kendler KS, McGuire M, Gruenberg AM, et al.  The Roscommon Family Study: III. Schizophrenia-related personality disorders in relatives. Arch. Gen. Psychiatry. 1993;50:781–788
  21. Kendler KS, Thacker L, Walsh D. Self report measures of schizotypy as indices of familial vulnerability to schizophrenia. Schizophr. Bull. 1996;22:511–521
  22. Kety SS, Rosenthal D, Wender PH. Mental illness in the biological and adoptive families of adopted schizophrenics. Am. J. Psychiatry. 1971;128:302–306
  23. Kraepelin E. Dementia Praecox and Paraphrenia. Chicago, IL: Chicago Medical Books; 1919;
  24. Levinson DF, Mowry BJ. Defining the schizophrenia spectrum. Schizophr. Bull. 1991;17:491–514
  25. Pica S, Edwards J, Jackson HJ, et al.  Personality disorders in recent-onset bipolar disorder. Compr. Psychiatry. 1990;31:499–510
  26. Raine A. The SPQ: a scale for the assessment of schizotypal personality based on DSM IIIR criteria. Schizophr. Bull. 1991;17:555–564
  27. Rossi A, Daneluzzo E. Schizotypal dimensions in normals and schizophrenic patients: a comparison with other clinical samples. Schizophr. Res. 2002;54:67–75
  28. Squires-Wheeler E, Skodol AE, Friedman D, et al.  The specificity of DSM-III schizotypal personality traits. Psychol. Med. 1988;18:757–765
  29. Squires-Wheeler E, Skodol AE, Bassett A, et al.  DSM-IIIR schizotypal personality traits in offspring of schizophrenic disorder, affective disorder and normal control parents. J. Psychiatr. Res. 1989;23:229–239
  30. Torgersen S, Edvardsen PA, Oien PA, et al.  Schizotypal personality disorder inside and outside the schizophrenia spectrum. Schizophr. Res. 2002;54:33–38
  31. Williams, M., 1993. The Psychometric Assessment of Schizotypal Personality. PhD Thesis. Institute of Psychiatry, University of London.
  32. Wing JK, Babor MD, Brugha T, et al.  Schedules for clinical assessment in neuropsychiatry. Arch. Gen. Psychiatry. 1990;47:589–593

PII: S0920-9964(03)00004-5

doi: 10.1016/S0920-9964(03)00004-5

Schizophrenia Research
Volume 65, Issue 2 , Pages 153-158 , 15 December 2003