ERP Study Of In-Group Stereotypes In Male Drug Rehabilitation Personnel

Drug abuse seriously endangers the health of human body and mind,causes organic diseases of human body,and causes mental problems such as thinking disorders,emotional disorders and behavioral disorders,thus bringing serious harm to individuals,families and society.Physical addiction is easy to get rid of,but psychological addiction is difficult to get rid of.Due to the influence of various factors,a large number of people who have come out of compulsory isolation and rehabilitation have re-entered the road of relapse.Drug addiction,especially relapse,remains an urgent social problem.Based on the influencing factors of relapse behavior,this study assumes that drug addicts have a negative stereotype of their drug addicts,which leads to their low motivation and confidence in drug addiction,and thus they have embarked on the road of relapse after going out of the drug rehabilitation center.In this study,male drug addicts were taken as the research object.Two studies were conducted to explore the stereotypes of male drug addicts on their groups through ERP Technical.In study 1,the effects of explicit stereotype activation and cognitive mechanism of drug addicts on their subgroups were investigated by using the classification-confirmation paradigm and repeated measurement variance analysis.The results showed that the respondents' response to judgment in the condition of matching "drug addicts" and "negative words" was significantly slower than that in the condition of matching "drug addicts" and "positive words".Under these two conditions,the N400 component with prolonged forehead-frontotemporal latency was induced,but the amplitude was not significantly different.The correct rate of respondents' responses under the two conditions of "drug addicts-positive words" and "drug addicts-negative words" is very high,which indicates that the respondents generally think that negative words can be used to describe drug addicts,while positive words can not be used to describe drug addicts.Finally,it is concluded that drug addicts have negative evaluation and attitude towards drug addicts,and positive evaluation and attitude towards non-drug addicts.However,in the classification-confirmation task of this study,the explicit negative stereotypes of drug addicts about their inner groups are not activated.Because the categorization-confirmation paradigm tests the explicit attitudes ofthe subjects,the subjects may be affected by various subjective ideas and attitudes during the test process,and thus do not activate the negative stereotypes of the drug addicts on their groups.Therefore,the second study intends to explore the activation effect and cognitive mechanism of implicit stereotypes of drug addicts on their subgroups by using the external emotional Simon task paradigm.When the target stimulus was consistent with the interference stimulus "positive word" button,the response to judgment was significantly slower than that to judgment when the target stimulus "drug addict" and the interference stimulus "negative word" button were consistent.The significant N400 component was induced in the frontotemporal-central region of the forehead-left side: the target stimulus "drug addict" and the interference stimulus.The amplitude of N400 induced by the same key of "positive vocabulary" was significantly higher than that induced by the same key of "negative vocabulary" when the target stimulus was "drug addict" and the interference stimulus was "negative vocabulary".Finally,the conclusion is drawn that the external emotional Simon task paradigm used in this study effectively activates the implicit group stereotypes of drug addicts,and drug addicts have implicit negative evaluation and attitude towards their drug addicts.Conclusion: Drug addicts have negative inner group stereotypes.