【作者】 谢四元；

【导师】 钟毅平；

【作者基本信息】 湖南师范大学 ， 基础心理学， 2008， 硕士

【摘要】 20世纪90年代以前,人们一直认为:态度是个体对社会客体持有或支持或反对的心理倾向。态度通常也通过单维量表来测量。矛盾态度的定义超越传统的单维度定义,指出矛盾态度是人们同时具有的积极和消极的评价,强调这种同时性且高强度性。探讨不同矛盾程度的被试在积极、消极维度是否存在不同的加工模块和神经机制,是国外认知神经科学和社会认知领域所关注的问题之一。本研究采用视觉事件相关电位技术和GNAT范式相结合的方式探讨人们对乙肝群体的态度矛盾性问题。实验前经过量表测量,选择了高、低矛盾态度者各12名(有效被试为24名右利手健康大学生),要求被试对不同类型的联结作按键反应或不作反应,记录64导脑电。结果如下:(1)人们对乙肝群体存在内隐的矛盾态度,但有消极倾向。高矛盾与低矛盾者的态度差异,并不显现在消极维度,而是在积极维度。(2)对乙肝群体态度的早期加工受到情绪词影响加工延后,且存在右偏侧化现象。在晚期加工阶段,高、低矛盾态度者在乙肝群体-积极刺激下都呈现出N270(冲突负波),但这种冲突负波主要分布在前、中头部。(3)矛盾态度调和预存性评价与背景依赖。(4)外显矛盾态度已影响人们的行为选择;对群体的认知度影响人们态度的矛盾性及行为选择。更多还原

【Abstract】 Traditional ways of viewing attitudes often construed representing general positive or negative evaluation before 1920s’ .Ambivalence attitude extends the traditional one-Dimensional conceptualization of attitude by acknowledging that people can simultaneously evaluate attitude objects as positive and negative, even both have strong feeling. To explore whether there is difference between ambivalence and their dimensional in terms of processing module and neural mechanism is one of the core problem of cognitive neural science. The present research adopted visual ERP technique and GNAT to find out the neural mechanism of them. Chose twelve people have high ambivalence attitude and twelve people had low ambivalence attitude using evaluate table. Subjects are twenty-four healthy right-handed university students; Stimuli are difference line. The EEG was recorded from 64 scalp locations. The results are as follows:People had ambivalence attitude and implicit ambivalence attitude with Hepatitis B sufferer or carrier, but had negative trend. High ambivalence and low ambivalence is not difference in negative but positive;The early process has a right lateralized distribution and has delayed; Both high ambivalence and low ambivalence causes N270(conflict negativity ),but the N270 is only in positive stimuli, and maximally over the fronto-central site;Ambivalence attitude had a moderator effect to stored-evaluations and context clue;Explicit ambivalence attitude had influenced people’ s chose, the cognition to group affect both of them.更多还原