Universität zu Köln

Fluckiger, Rahel, Ruhrmann, Stephan ORCID: 0000-0002-6022-2364, Debbane, Martin ORCID: 0000-0002-4677-8753, Michel, Chantal ORCID: 0000-0003-1165-6681, Hubl, Daniela, Schimmelmann, Benno G., Klosterkoetter, Joachim and Schultze-Lutter, Frauke (2016). Psychosis-Predictive Value of Self-Reported Schizotypy in a Clinical High-Risk Sample. J. Abnorm. Psychol., 125 (7). S. 923 - 933. WASHINGTON: AMER PSYCHOLOGICAL ASSOC. ISSN 1939-1846

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Abstract

Schizotypy is considered an indicator of psychosis-proneness and therefore, a precursor to schizophrenia-spectrum psychosis. In the early detection of psychosis, the widely used ultra high-risk criteria refer to the positive features of schizotypy and schizotypal personality disorders (SPD). In clinical high risk (CHR) samples, self-reported or clinically assessed SPD, notably the lack of close friends, has been suggested to facilitate the prediction of psychosis. In community samples, self-reported schizotypy has mainly been assessed psychometrically using the 4 Wisconsin Schizotypy Scales (WSS; Chapman, Chapman, Kwapil, Eckbald, & Zinser, 1994), and the positive schizotypy dimension was consistently predictive of psychosis (Debbane et al., 2015). However, psychometrically assessed schizotypy has not yet been studied as a potential predictor of psychosis in CHR samples. To bridge this gap, we studied the psychosis-predictive value of 3 of the WSSs and their association with CHR state in a clinical sample. One hundred 28 patients (23 +/- 7 years; 81% considered CHR) from 2 early detection services were followed for 12 to 101 months. Within 48 months, 36 (28.1%) converted to psychosis. Only physical anhedonia was associated with CHR state, and high scores for physical anhedonia were predictive of conversion in conjunction with the CHR state. Physical anhedonia rather than positive schizotypy scales might separate future converters from nonconverters in clinical samples already presenting a phenomenologically more extreme range on the psychosis continuum. Given their reported psychosis-predictive value in nonclinical samples, psychometric schizotypy measures in general might be useful for the initial screening of psychosis-proneness in the community, whereas physical anhedonia might be particularly useful in CHR samples.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Fluckiger, Rahel UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruhrmann, Stephan UNSPECIFIED orcid.org/0000-0002-6022-2364 UNSPECIFIED Debbane, Martin UNSPECIFIED orcid.org/0000-0002-4677-8753 UNSPECIFIED Michel, Chantal UNSPECIFIED orcid.org/0000-0003-1165-6681 UNSPECIFIED Hubl, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Schimmelmann, Benno G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Klosterkoetter, Joachim UNSPECIFIED UNSPECIFIED UNSPECIFIED Schultze-Lutter, Frauke UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-260108
DOI:	10.1037/abn0000192
Journal or Publication Title:	J. Abnorm. Psychol.
Volume:	125
Number:	7
Page Range:	S. 923 - 933
Date:	2016
Publisher:	AMER PSYCHOLOGICAL ASSOC
Place of Publication:	WASHINGTON
ISSN:	1939-1846
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SOCIAL ANHEDONIA; PERCEPTUAL ABERRATION; MAGICAL IDEATION; GENERAL-POPULATION; PHYSICAL ANHEDONIA; BASIC SYMPTOMS; YOUNG-ADULTS; SCHIZOPHRENIA; SCALES; PRONENESS Multiple languages Psychology, Clinical; Psychiatry Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26010