锚定判断中的心理刻度效应:来自ERP的证据

被引：22

作者：

曲琛

周立明

罗跃嘉

机构：

[1] 北京师范大学认知神经科学与学习国家重点实验室

来源：

心理学报 | 2008年 / 06期

关键词：

锚定; 心理刻度; 调整; 通达; 事件相关电位;

D O I：

暂无

中图分类号：

B842.5 [言语与思维];

学科分类号：

摘要：

当前主要有两种理论解释锚定效应的发生机制:锚定调整启发模型和选择通达模型。同样,锚值可能是自发产生的,也可能是外部提供的。本研究用两个ERP实验分别探讨了不同精细程度的心理刻度对自发锚定加工和外部锚定加工的影响。结果表明,只有在自发锚引起的锚定加工中才出现心理刻度效应:在目标呈现后250～800m s之间,精细心理刻度比粗糙心理刻度诱发一个更大的波形正走向,支持锚定调整启发模型。在外部锚引起的锚定加工中,没有出现心理刻度效应,却出现了一个与通达有关的N300成分,支持选择通达加工模型。总的结果支持了锚定加工的双重属性:锚定判断是主动调整还是选择通达取决于不同的情境。

引用

页码：681 / 692

页数：12

共 11 条

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