Institutional Repository, Institute of Psychology, Chinese Academy of Sciences
Electrophysiological correlates of adjustment process in anchoring effects | |
Qu, Chen1,2; Zhou, Liming1; Luo, Yue-Jia1,3; Yue-jia Luo | |
摘要 | Anchoring is a judgmental bias that final judgments are assimilated toward the starting point of the judge's deliberations. The anchoring-and-adjustment heuristic holds that anchoring bias is caused by insufficient adjustment. With the manipulation of some subjective factors, previous research found that anchoring is an effortful process. However, there is little evidence supporting that the effortful process is an adjustment process. In the present work, number accuracy was introduced as an objective factor which involves in an adjustment process. An event-related brain potential (ERP) experiment on young normal subjects examined the impact of number accuracy on anchoring processes responding to anchors which were generated by subjects themselves. A dot-image paradigm was firstly employed to explore anchoring effects. Behavioral results found less accurate anchors which determined a coarser mental scale diminished the anchoring biases responding to self-generated anchors. A positive deflection at 250-800 ms after target onset can be taken as a direct electrophysiological evidence of the adjustment process, whose amplitude was more positive on more accurate anchors condition. The present results further support that people adjust upwards or downwards on a mental scale from the self-generated anchor, which is consistent with the adjustment heuristics.; Anchoring is a judgmental bias that final judgments are assimilated toward the starting point of the judge's deliberations. The anchoring-and-adjustment heuristic holds that anchoring bias is caused by insufficient adjustment. With the manipulation of some subjective factors, previous research found that anchoring is an effortful process. However, there is little evidence supporting that the effortful process is an adjustment process. In the present work, number accuracy was introduced as an objective factor which involves in an adjustment process. An event-related brain potential (ERP) experiment on young normal subjects examined the impact of number accuracy on anchoring processes responding to anchors which were generated by subjects themselves. A dot-image paradigm was firstly employed to explore anchoring effects. Behavioral results found less accurate anchors which determined a coarser mental scale diminished the anchoring biases responding to self-generated anchors. A positive deflection at 250-800 ms after target onset can be taken as a direct electrophysiological evidence of the adjustment process, whose amplitude was more positive on more accurate anchors condition. The present results further support that people adjust upwards or downwards on a mental scale from the self-generated anchor, which is consistent with the adjustment heuristics. (C) 2008 Published by Elsevier Ireland Ltd. |
关键词 | Anchoring Accuracy Adjustment Event-related potential |
学科领域 | 认知神经科学 |
2008-11-21 | |
语种 | 英语 |
发表期刊 | NEUROSCIENCE LETTERS |
ISSN | 0304-3940 |
卷号 | 445期号:3页码:199-203 |
期刊论文类型 | Article |
收录类别 | SCI |
WOS记录号 | WOS:000260852900002 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.psych.ac.cn/handle/311026/5369 |
专题 | 中国科学院心理研究所回溯数据库(1956-2010) |
通讯作者 | Yue-jia Luo |
作者单位 | 1.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China 2.S China Normal Univ, Ctr Studies Psychol Applicat, Guanghou, Peoples R China 3.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100864, Peoples R China |
推荐引用方式 GB/T 7714 | Qu, Chen,Zhou, Liming,Luo, Yue-Jia,et al. Electrophysiological correlates of adjustment process in anchoring effects[J]. NEUROSCIENCE LETTERS,2008,445(3):199-203. |
APA | Qu, Chen,Zhou, Liming,Luo, Yue-Jia,&Yue-jia Luo.(2008).Electrophysiological correlates of adjustment process in anchoring effects.NEUROSCIENCE LETTERS,445(3),199-203. |
MLA | Qu, Chen,et al."Electrophysiological correlates of adjustment process in anchoring effects".NEUROSCIENCE LETTERS 445.3(2008):199-203. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Qu-2008-Electrophysi(378KB) | 开放获取 | -- | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论