吸烟者内隐态度的ERP研究

采用内隐联想测验的变式——WIAT研究吸烟者对吸烟行为的内隐态度，并用事件相关电位（ERP）技术探讨吸烟者在进行WIAT任务时的脑内时程变化。结果发现，吸烟者对于吸烟行为的内隐态度是消极的。吸烟词语与两类属性词（积极和消极）相联时诱发的ERPs有显著差异，体现在多个ERP成分（P1、N2、N4、LPC）中。结果表明，吸烟者的内隐态度在早期就受情绪的调节和影响；而两个冲突负波的出现表明，在内隐态度的加工过程中可能存在认知评价的过程。晚正成分的差异则表明，当吸烟词语与消极词相联时唤醒度更高、吸烟者的注意有增强趋势。实验结果支持了态度的三元论。

An ERP Study of Implicit Attitude of Smokers

The present study used improved Implicit Association Test（WIAT） to investigate the implicit attitude of smokers towards smoking,and used Event-related brain potentials（ERPs） to investigate the implicit attitude in neural processing. Results revealed implicit attitude towards smoking was negative. The study found some important components elicited by the two tasks in ERPs, such as anterior P1, N2,N4 and LPC. The anterior P1 suggested that implicit attitude can be influenced and modulated by emotion. Two negative ERPs indicated that the cognitive evaluation processing may participate in the implicit attitude process. The difference of late positive component（LPC） suggested that the smoking words are more arousing and prominent when matched with the negative words. This study supported the ABC attitude theory.