Victims' time discounting 2.5 years after the Wenchuan earthquake: an ERP study

Autor: Wen Zhong Wang, Tian Gan, Yuejia Luo, Jin Zhen Li, Dan Yang Gui, Chunliang Feng, Bo Qi Du
Rok vydání: 2011
Předmět:
Male
Rural Population
Time Factors
Emotions
Poison control
lcsh:Medicine
Social and Behavioral Sciences
Suicide prevention
Occupational safety and health
Disasters
0302 clinical medicine
Human Performance
Psychology
Survivors
lcsh:Science
health care economics and organizations
Problem Solving
Multidisciplinary
05 social sciences
Human factors and ergonomics
Experimental Psychology
Faculty
Mental Health
Medicine
Female
Time preference
Research Article
Adult
China
Injury control
Social Psychology
Accident prevention
Decision Making
050105 experimental psychology
03 medical and health sciences
Reward
Neuropsychology
Injury prevention
Earthquakes
Humans
0501 psychology and cognitive sciences
Analysis of Variance
Behavior
lcsh:R
Cognitive Psychology
Event-Related Potentials
P300
Case-Control Studies
lcsh:Q
030217 neurology & neurosurgery
Demography
Zdroj: PLoS ONE
PLoS ONE, Vol 7, Iss 7, p e40316 (2012)
ISSN: 1932-6203
Popis: Background Time discounting refers to the fact that the subjective value of a reward decreases as the delay until its occurrence increases. The present study investigated how time discounting has been affected in survivors of the magnitude-8.0 Wenchuan earthquake that occurred in China in 2008. Methodology Nineteen earthquake survivors and 22 controls, all school teachers, participated in the study. Event-related brain potentials (ERPs) for time discounting tasks involving gains and losses were acquired in both the victims and controls. Findings The behavioral data replicated our previous findings that delayed gains were discounted more steeply after a disaster. ERP results revealed that the P200 and P300 amplitudes were increased in earthquake survivors. There was a significant group (earthquake vs. non- earthquake) × task (gain vs. loss) interaction for the N300 amplitude, with a marginally significantly reduced N300 for gain tasks in the experimental group, which may suggest a deficiency in inhibitory control for gains among victims. Conclusions The results suggest that post-disaster decisions might involve more emotional (System 1) and less rational thinking (System 2) in terms of a dual-process model of decision making. The implications for post-disaster intervention and management are also discussed.
Databáze: OpenAIRE
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