高低反刍思维个体冷热执行功能特点的比较

Cold and hot executive functions between high-level and low-level ruminant thinking individuals

目的：不同反刍思维个体在冷热执行功能方面的特点。方法采用RRS量表对350名被试进行筛选，以Stroop实验范式测量筛选出的17名低反刍思维个体和21名高反刍思维个体的执行功能差异。结果在冷执行功能方面，高、低分组对颜色命名任务的反应时趋于一致[（10．61±23．20）ms vs （10．79±29．32）ms]，两组被试的经典Stroop效应量无统计学意义（ t＝0．21， P＞0．05）；在热执行功能方面，低分组对正、负性词的反应时均长于高分组[（－5．01±22．20）ms vs （－10．88±20．33）ms；（8．78±29．96）ms vs （－8．68±19．94）ms]，两组被试的情绪Stroop效应量无统计学意义（F＝2．70， P＞0．05），两类词汇（正性词和负性词）的Stroop效应量差异有统计学意义（F＝10．88， P＜0．05），词汇类型×被试类型的交互作用有统计学意义（F＝5．70， P＜0．05）；简单效应分析结果表明，高、低两组反刍思维个体在负性词水平上的情绪Stroop效应量差异有统计学意义（F＝4．69， P＜0．05），两类词汇Stroop效应量的差异在低反刍组内有统计学意义（F＝14．63， P＜0．05）。结论两类被试在冷执行功能上的差异无统计学意义，高反刍个体冷执行功能正常，但热执行功能受损，具体表现为高反刍个体对消极情绪具有偏向性。这一结果为如何干预由反刍引起的负面情绪提供新的视角。

Objective To explore the character of ruminant thinking individuals in cold executive functions（cool EF） and hot executive functions（hot EF）.Methods According to the score of rumination response scale（ RRS） ,17 low-level ruminant thinking individuals and 21 high-level ruminant thinking indi-viduals were screened out and finished the classic Stroop test.Results In the cool EF,it was consistent be-tween low-level and high-level ruminant thinking individuals for color naming task response time （（10.61± 23.20）ms vs （10.79±29.32）ms）,and there was no significant difference in the classic Stroop test（ t=0.21, P〉0.05） .In the hot EF,the respone time of the low-level group was longer than that of high-level group on the positive and negative（（-5.01±22.20）ms vs （-10.88±20.33）ms;（8.78±29.96）ms vs （-8.68±19.94） ms） ,and the main effect of the emotional Stroop interference scores between positive and negative words was highly significant（F=10.88, P〈0.05） .The interactive effect of emotional Stroop interference scores of words × subjects was significant（F=5.70, P〈0.05） .The simple effect tests showed that the emotional Stroop interfer-ence scores between high-level and low-level ruminant thinking subjects were significant in the negative group（F=4.69, P〈0.05） .And it was also significant between positive and negative words in the low-level group（F=14.63, P〈0.05）.Conclusion Two types of subjects in the cold EF have no significant difference. High-level ruminant thinking individuals in the cold EF are normal,but impaired in the hot EF that meaning high-level ruminant thinking individuals had bias to negative emotion.These results provide new clues for the intervention of negative emotions caused by ruminants.