BIOELECTRICAL ECHOES FROM EVALUATIVE CATEGORIZATIONS .1. A LATE POSITIVE BRAIN POTENTIAL THAT VARIES AS A FUNCTION OF TRAIT NEGATIVITY AND EXTREMITY
BIOELECTRICAL ECHOES FROM EVALUATIVE CATEGORIZATIONS .1. A LATE POSITIVE BRAIN POTENTIAL THAT VARIES AS A FUNCTION OF TRAIT NEGATIVITY AND EXTREMITY
复制标题
DOI：
10.1037/0022-3514.67.1.115
复制
发表时间：
1994-07-01
影响因子：
7.6
通讯作者：
BERNTSON, GG
中科院分区：
文献类型：
--
作者：
CACIOPPO, JT;CRITES, SL;BERNTSON, GG
态度可以根据评估分类和响应选择执行的基本操作来概念化。本文描述了与第一个操作相关的事件相关电位的组件。 Ss 接触 6 个性状的序列并执行二分评价分类任务。通过在主要包含非常积极特征的序列中嵌入非常积极、中等积极、中等消极和非常消极特征来改变评价不一致。与轻度不一致或一致的性状相比，高度和中度评价不一致的性状会引起更大幅度的晚期正电位（LPP），该电位在顶叶中央区域最大。此外，与中度评价不一致的性状相比，极端评价不一致的性状引起的 LPP 幅度更大，即使两组性状都被判定为负面。
Attitudes can be conceptualized in terms of the elementary operations of evaluative categorization and response selection-execution. This article describes a component of the event-related potential that is associated with the first of these operations. Ss were exposed to sequences of 6 traits and performed a dichotomous evaluative categorization task. Evaluative inconsistency was varied by embedding very positive, moderately positive, moderately negative, and very negative traits in sequences containing predominantly very positive traits. Highly and moderately evaluatively inconsistent traits, compared with mildly inconsistent or consistent traits, evoked a larger amplitude late positive potential (LPP) that was maximal over centroparietal regions. Furthermore, extremely evaluatively inconsistent traits evoked a larger amplitude LPP than moderately evaluatively inconsistent traits even though both sets of traits were judged to be negative.