情绪评价任务中抑郁个体的分心抑制机制实验研究

本实验使用情绪负启动技术，在情绪评价任务中考察了抑郁个体和正常被试对正、负情绪词分心抑制方面的差异。结果显示，与控制条件下相比，非抑郁控制组被试在负启动条件下对探测显示中正、负性靶子词的反应时间更长；抑郁个体只表现在对探测显示中正性靶子词反应时的延长，负性靶子词未出现负启动效应。结果说明，抑郁个体对负性信息存在抑制机制障碍，对负性信息的偏向与选择性注意中的维持成分有关。这提示心理治疗家应该注重训练抑郁个体对负性信息的抑制能力，预防抑郁复发的目标应集中在注意持续的控制上。

A Study on the Distractor Inhibition Mechanism of Depressed Individuals in Affective Evaluation Task

With the affective evaluation task, this study examined the differences of the distracor inhibiion mechanism between non- depressed subjects and depressed individuals by using a negative affective priming technique. The result shows that non-depressed subjects had slower response to positive and negative target words in the probe trial under the condition of negative priming compared with the control condition, while depressed individuals only had slower response to positive target words and failed to show negative priming in negative targets in the probe trial. The result obtained is in line with the hypothesis that depressed individuals are only associated with inhibitory deficit for negative information, which indicated that psychological therapeutist should put more emphasis on the training of the ability to inhibit distractor interference in depression individuals and attentional control should be targeted in clinical treatments to prevent relapses of depression.