title: Verbal self-monitoring in individuals with schizotypal personality traits: an exploratory ERP study.
abstract: BACKGROUND
  Individuals with schizophrenia have deficits in verbal self-monitoring. This study aimed to assess whether individuals vulnerable to develop schizophrenia show similar difficulties.
  
  
  METHODS
  Fifteen individuals with schizotypal personality traits and 15 healthy controls participated. All participants underwent an event-related potential (ERP) paradigm using a phoneme monitoring Go/No-Go task.
  
  
  RESULTS
  Behavioural results showed that there was no significant difference between individuals with schizotypal personality traits and controls in post-error slowing, but schizotypal individuals had a significantly lower degree of error awareness and higher error rate. In the ERP data, when compared with controls, individuals with schizotypal personality traits showed similar error-related negativity (ERN) amplitude but significantly larger error positivity (Pe) amplitude.
  
  
  CONCLUSIONS
  Results of this study suggest that verbal error detection may be intact in individuals with schizotypal personality traits. However, it seems that this vulnerable population may have a greater emotional evaluation of errors.
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Lai-Quan
authors.initials: LQ
authors.lastname: Zou
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Kui
authors.initials: K
authors.lastname: Wang
authors.affiliation: Psychology Research Center, South China Normal University, Guangzhou, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Qu
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Castle Peak Hospital, Hong Kong Special Administrative Region.
authors.forename: Simon S Y
authors.initials: SS
authors.lastname: Lui
authors.affiliation: Behavioural Basis of Health Research Program, Griffith Health Institute, Griffith University, Gold Coast, Australia.
authors.forename: David H K
authors.initials: DH
authors.lastname: Shum
authors.affiliation: Castle Peak Hospital, Hong Kong Special Administrative Region.
authors.forename: Eric F C
authors.initials: EF
authors.lastname: Cheung
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. Electronic address: rckchan@psych.ac.cn.
authors.forename: Raymond C K
authors.initials: RC
authors.lastname: Chan
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001364:Awareness; D001921:Brain / Q000503:physiopathology*; D002681:China; D004569:Electroencephalography / Q000379:methods; D004585:Electrooculography / Q000379:methods; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D011569:Psychiatric Status Rating Scales; D011930:Reaction Time; D012569:Schizotypal Personality Disorder / Q000503:physiopathology*; D014705:Verbal Behavior; D055815:Young Adult
keywords: Error positivity; Error-related negativity; Go/No-Go task; Schizotypal personality traits; Verbal self-monitoring