Theory of mind and social judgments in people at clinical high risk of psychosis.
BACKGROUND
Social cognitive deficits are consistently reported in psychotic populations. Few studies have longitudinally investigated social cognition in clinical high-risk (CHR) populations.


OBJECTIVE
Longitudinally examine theory of mind (ToM) and social judgments in a CHR sample to investigate the stability of performance over time and potential ability to predict conversion to psychosis.


METHODS
147 CHR individuals and 85 help seeking controls (HSC) were assessed for up to 2years; 28 participants developed psychosis across both groups. Generalized linear mixed models for repeated measures were used to examine change over time for ratings on the three social cognitive indices of ToM, trustworthiness, and approachability. Hierarchical regression was used to test whether social cognitive variables explain more variance in conversion than IQ.


RESULTS
CHR individuals showed a positive bias in approachability judgments over time compared to HSC. Baseline ToM performance significantly (p<.05) predicted later conversion beyond IQ scores. These results were attenuated when controlling for baseline symptom level.


CONCLUSIONS
Although ToM deficits might predate conversion to psychosis, one must consider initial symptoms as well. Social judgments were not associated with conversion to schizophrenia.
Department of Psychology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States. Electronic address: kmhealey@email.unc.edu.
Kristin M
KM
Healey
David L
DL
Penn
Diana
D
Perkins
Scott W
SW
Woods
Jean
J
Addington
D000293:Adolescent; D000328:Adult; D003072:Cognition Disorders / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology*; D016014:Linear Models; D008137:Longitudinal Studies; D008297:Male; D009483:Neuropsychological Tests; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000150:complications* / Q000523:psychology*; D012919:Social Behavior; D056345:Theory of Mind / Q000502:physiology*; D055815:Young Adult
Clinical high risk; Longitudinal study; Schizophrenia; Social cognition; Social judgments; Theory of mind