title: Anticipatory processes under academic stress: an ERP study.
abstract: It is well known that preparing for and taking high-stakes exams has a significant influence on the emotional and physiological wellbeing of exam-takers, but few studies have investigated the resulting cognitive changes. The current study examined the effect of examination-induced academic stress on anticipation in information processing. Anticipation was indexed using the contingent negative variation (CNV). Electroencephalograms (EEG) were collected from 42 participants using the classic S1-S2 paradigm. These participants were preparing for the Chinese National Postgraduate Entrance Exam (NPEE). EEGs were also collected from 21 age-matched, non-exam comparison participants. The levels of perceived stress and state anxiety were higher and both the initial CNV (iCNV) and the late CNV (lCNV) were more negative in the exam group than in the non-exam group. These results suggest that participants under academic stress experienced greater anticipation of upcoming events. More important, for the non-exam group, state anxiety was positively related to both the iCNV and lCNV amplitude, and this correlation existed when trait anxiety was controlled; however, there was no such relationship in the exam group. These results suggested that the cortical anticipatory activity in the high-stressed exam group reached the maximum ceiling, leaving little room for transient increases in state anxiety.
authors: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
authors: Hongxia
authors: H
authors: Duan
authors: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
authors: Yiran
authors: Y
authors: Yuan
authors: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
authors: Can
authors: C
authors: Yang
authors: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
authors: Liang
authors: L
authors: Zhang
authors: University of Chinese Academy of Sciences, Beijing, China.
authors: Kan
authors: K
authors: Zhang
authors: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. Electronic address: wujh@psych.ac.cn.
authors: Jianhui
authors: J
authors: Wu
mesh_terms: D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000503:physiopathology*; D001519:Behavior / Q000502:physiology; D001921:Brain / Q000502:physiology* / Q000503:physiopathology; D003265:Contingent Negative Variation / Q000502:physiology; D004569:Electroencephalography / Q000379:methods; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D001523:Mental Disorders / Q000503:physiopathology; D013315:Stress, Psychological / Q000503:physiopathology*; D055815:Young Adult
keywords: Anticipation; CNV; ERP; Long-term academic stress; State anxiety