阈下抑郁青少年趋近和回避行为的特点

Characteristics of approach and avoidance behaviors among subthreshold depressed adolescents

目的研究阈下抑郁青少年的趋近和回避行为特点。方法27名阈下抑郁组青少年与29名对照组青少年完成趋近和回避任务，比较趋近任务与回避任务的反应时差异。同时比较两组在行为抑制系统与行为激活系统的得分差异。结果（1）阈下抑郁组在趋近高兴表情时其反应时长于对照组，差异具有统计学意义[阈下抑郁组：（1208．18±338．92）ms，对照组：（1058．40±204．22）ms，t=2．02，P〈O．05]。（2）阈下抑郁组行为激活系统得分低于对照组，差异具有统计学意义[阈下抑郁组：（37．33±4．46）分，对照组：（39．76±3．75）分，t=-2．21，P〈0．05]；且行为激活．奖赏反应维度存在边际效应[阈下抑郁组：（12．63±1．67），对照组：（13．41±1．30），t=-1．97，P=0．054]。结论激活阈下抑郁青少年的趋近行为表现，可能有助于改善其抑郁症状。

Objective To explore the characteristics of approach and avoidance behaviors among subthreshold depressed adolescents. Methods 27 subthreshold depressed adolescents and 29 healthy control teenagers completed the approach-avoidance task, and the reaction time at approach and avoidance task of the two groups was compared. At the same time, their differences were analyzed between the two groups on the Behavioral Inhibition/Activation System Scale scores. Results （1） Subthreshold depression group （ 1 208.18 ± 338.92）ms ） had significantly longer reaction time than those in healthy control group （ （ 1 058.40 ±204.22） ms） when approaching happy expression （ t= 2.02, P〈0.05）. （2） Subthreshold depression group （37.33±4.46） had significantly lower behavioral activation system scale scores than those in healthy control group （（39.76±3.75） , t=-2.21, P〈0.05） ; and the score of reward responsiveness was marginally significant lower in subthreshold depression group （ 12.63 ± 1.67） than that in healthy control group （ （ 13.41 ± 1.30）, t=-1.97, P=0.054）, Conclusion To activate the approach behaviors of subthreshold depression adolescents may be helpful for reducing the symptoms of depression.