Psychological Development and Education ›› 2012, Vol. 28 ›› Issue (2): 150-159.

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A Comparative Study of Earthquake-Exposed Middle School and Undergraduate Students on Memory Bias to Threatening Stimuli

ZHANG Yan1,2, KONG Fan-chang2, HAN Li1,2, SHI Ming-li2, CHEN Hong2   

  1. 1. School of Educational Science, Mianyang Normal University, Sichuan 621000;
    2. Key Laboratory of Cognition and Personality (Ministry of Education), School of Psychology, Southwest University, Chongqing 400715
  • Online:2012-03-15 Published:2012-03-15

Abstract: Different age groups of earthquake-exposed survivors(13 undergraduates and 13 middle school students) were investigated in a study-test paradigm using event-related potentials(ERPs).The results showed that:(1)the earthquake-exposed middle school students group had significantly shorter P300 latencies than undergraduates group elicited by old earthquake-related stimuli on frontal-central sites,and higher P300 and LPC amplitude on parietaloccipital sites.(2)The earthquake-related stimuli elicited larger amplitudes than neutral stimuli in P300 and LPC components for two earthquake-exposed groups.It indicated that the earthquake-related stimuli had more effects on the earthquake-exposed middle school students than earthquake-exposed undergraduate,and earthquake-exposed group had memory bias to earthquake-related stimuli.

Key words: earthquake-exposed survivors, memory bias, ERP

CLC Number: 

  • B844.2
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