Anxiety Enhances Threat Processing Without Competition Among Multiple Inputs: A Diffusion Model Analysis
Anxiety Enhances Threat Processing Without Competition Among Multiple Inputs: A Diffusion Model Analysis
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DOI：
10.1037/a0019474
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发表时间：
2010-10-01
期刊：
影响因子：
4.2
通讯作者：
McKoon, Gail
中科院分区：
文献类型：
--
作者：
White, Corey N.;Ratcliff, Roger;McKoon, Gail
在高焦虑个体中，对威胁信息的强化处理是一种普遍存在的现象。这种效应最可靠地显示在2个或更多项目竞争加工资源的情况下，这表明输入竞争是该效应的关键组成部分。然而，在没有投入竞争的情况下，可能会有很小的影响，但通常使用的依赖措施不够敏感，无法检测到它们。本研究使用扩散模型分析了非竞争任务单字符串词汇决策的数据，扩散模型是一种决策过程模型，它提供了比单独的响应时间或准确性更直接的性能差异测量。扩散模型分析结果表明，高焦虑个体对威胁性词语的加工优势是一致的，而传统比较结果显示差异不显著。这些结果挑战了输入竞争对于增强威胁处理是必要的观点。讨论了焦虑理论的含义。
Enhanced processing of threatening information is a well established phenomenon among high-anxious individuals. This effect is most reliably shown in situations where 2 or more items compete for processing resources, suggesting that input competition is a critical component of the effect. However, it could be that there are small effects in situations without input competition, but the dependent measures typically used are not sensitive enough to detect them. The present study analyzed data from a noncompetition task, single-string lexical decision, with the diffusion model, a decision process model that provides a more direct measure of performance differences than either response times or accuracy alone. The diffusion model analysis showed a consistent processing advantage for threatening words in high-anxious individuals, whereas traditional comparisons showed no significant differences. These results challenge the view that input competition is necessary for enhanced threat processing. Implications for theories of anxiety are discussed.