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141.
Camchong J Goodie AS McDowell JE Gilmore CS Clementz BA 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2007,23(2):185-199
Research on the neural correlates of decision making in gambling tasks may be informative for understanding problem gambling.
The present study explored confidence and overconfidence using magnetoencephalography (MEG) to measure brain activity during
a judgment task. Nineteen undergraduates who self-identified as frequent gamblers (average age 19.7 years; 5 females, 14 males)
participated in this study. Participants first completed the DIGS (Winters, Specker & Stinchfield, 2002), a measure of gambling pathology. They then engaged in a behavioral task of confidence assessment, wherein they answered
two-alternative trivia questions and estimated the probability that each answer was correct. In a subsequent MEG task, they
viewed the questions and a target answer, and indicated with a button press whether the target matched the correct answer.
Confidence was directly related to activity in the right prefrontal cortex. Matching and mismatching targets were associated
with activity in the medial occipital cortex and left supramarginal gyrus, respectively. An interaction of pathology and match/mismatch
was observed in the right inferior occipital-temporal junction region, showing more activity following a mismatch in non-problem
gamblers, but not in problem gamblers. Implications of the results for understanding of top–down modulation and attentional
systems are discussed in relation to gambling behavior. 相似文献
142.
Economic transitions have the potential to displace workers and cause social unrest. Coal mine closures and the resulting employment losses in rural areas have become salient issues. Using data on coal mine and power plant operation, we model closure as a function of expected profits, which allows us to compare the effects on mine closure of specific demand and supply shocks to expected mine profits. Increasing costs of production have had a large impact on closures, but lower natural gas prices and lower electricity demand have played more recently important roles. 相似文献
143.
Emergency risk communication (ERC) for smoke emitted from major fires continues to challenge governments. During these events, practitioners (including scientific, communication, and emergency response government staff) are tasked with quickly making sense of the public health risks and the communication options available. Practitioners’ sensemaking—the process of creating meaning from information about an unfolding emergency—is key to effective ERC. This article identifies the factors that ERC practitioners consider the most important to their sensemaking for smoke events. A survey of practitioners (n = 86) was conducted to elicit their views on the level of importance of 22 different factors (individual, organizational, and contextual) on their sensemaking. The results indicate that the majority of the factors tested are very important to practitioners. This finding likely reflects the multidimensional nature of emergency smoke events and provides evidence as to why practitioners are challenged when trying to make sense of emergency situations. Despite multiple factors being considered very important to practitioners, the time-limited nature of emergencies means that practitioners will inevitability be forced to prioritize in their sensemaking efforts. Our results also provide insight into practitioners’ prioritization of different information sources. Specifically, practitioners prioritize their own knowledge and the knowledge of other practitioners. The two most important factors were information from other incident management stakeholders and the practitioners’ past experience. Other information, including community-based and academic knowledge, appear to be of lower priority for practitioners. Based on the study results, recommendations for practice and future research are discussed. 相似文献