内隐和外显情绪刺激反应抑制与大学生冲动性行为的关系

The Relationship Between the Response Inhibition of Implicit and Explicit Emotional Stimuli and Impulsive Behavior of College Students

目的：基于情绪性Go/Nogo任务,探究了内隐和外显情绪刺激条件下反应抑制的差异及其对大学生冲动性行为的影响。方法：运用Barratt冲动性量表（BIS-11）对随机抽取的84名在校大学生的冲动性水平进行了测量。采用情绪性Go/Nogo任务比较被试在不同情绪刺激条件下,按键或不按键反应的错误率和反应时。所得数据采用描述统计、方差分析及相关分析进行了统计学处理。结果：（1）高、低冲动两组在普通任务中的反应时（F=1.53,P〉0.05）、错误率（F=0.98,P〉0.05）均没有显著差异,而在外显任务中,高冲动组比低冲动组有更短的反应时（F=6.63,P〈0.05）、更高的错误率（F=5.68,P〈0.05）;（2）在内隐任务中,高、低冲动两组在中性图片背景下的反应时（F=0.41,P〉0.05）、错误率（F=2.38,P〉0.05）均没有显著差异;在负性图片背景下,高冲动组的反应时短于低冲动组（F=7.82,P〈0.01）,错误率高于低冲动组（F=4.67,P〈0.05）;（3）相关分析结果显示,外显任务反应时与无计划冲动性呈负相关（r=-0.312,P〈0.05）,内隐任务中的负性图片反应时、错误率分别与无计划冲动性呈正相关（r=0.333,0.323;P〈0.05）。结论：高冲动者更易受到内隐和外显负性情绪刺激的影响从而表现出反应抑制功能的缺损。

Objective：To investigate the differences in response inhibition under implicit and explicit emotional stimuli and their effects on college students＇ impulsive behavior based on the emotional Go/Nogo task.Methods：The impulse level of randomly selected 84 undergraduates was measured using the Barratt Impulsivity Scale（BIS-11）.Using the emotional Go/Nogo task to compare the error rate and response time of the subjects under different emotional stimuli,key presses or no key reactions.The data was analyzed using describe statistics,variance analysis and correlation analysis.Results：（1）In the general task,the response time and the error rate of two groups were not significantly different（P〈0.05）,while in the explicit task,the high impulse group had a higher response rate（F=6.63,P〈0.05）than the lower impulse group with higher error rate（F=5.68,P〈0.05）.（2）In the implicit task,the response time and the error rate of two groups in the neutral picture background were not significantly different（P〉0.05）;In the negative picture background,the response time of the high impulse group was shorter than that of the low impulse group（F=7.82,P〈0.01）,and the error rate was higher than that of the low impulse group（F=4.67,P〈0.05）.（3）The correlation analysis showed that the response time in explicit task was negatively correlated with unplanned impulses（r=-0.312,P〈0.05）,the negative picture response time and error rate in the implicit task were positively correlated with unplanned impulses（r=0.333,0.323,P〈0.05）.Conclusion：High impulses are more susceptible to implicit and explicit negative emotional stimuli to exhibit a defect in response to inhibition.