| As a problem behavior,aggressive behavior has many serious negative impacts on the mental and behavior health of the victims.With the development of molecular genetics,more and more researchers hope to conduct more systematic and in-depth research on aggressive behavior through gene-environment design.In addition,the General Aggression Model indicated that personality and environmental factors can interact with each other and finally lead to individual's aggressive behavior.Previous studies have verified the rationality and practicability of this model,but most of these studies choose violent games as environmental variables.With the development of Internet platform,network news has become an important way for people to obtain new information and knowledge.Unlike violent games,network news tends to have broader coverage and deeper impact,and there is no gender difference in this impact.Therefore,based on GAM and the different susceptibility models in gene-environment interaction,the present study chooses the network news browsing as the environmental variable,and the MAOA gene rs6323 polymorphism as the individual variable to explore the impact of the interaction between these two factors on college students' aggressive behavior.In this study,400 undergraduates from Shandong Province were selected to collect data,which includes the Network News Browsing Preference Questionnaire and Aggression Scale by means of self-report.Meanwhile,saliva was collected for professional DNA detection and analysis.After excluding the invalid data and controlling the preference of different types of network news browsing,the interaction between MAOA gene rs6323 polymorphism and the preference of network news browsing on college students' aggressive behavior and the regulation of gender were explored by using the method of hierarchical regression.The results were discussed and the following conclusions are drawn:(1)The developed network news browsing preference questionnaire has good reliability and validity,and meet the psychometric standards.(2)The MAOA gene rs6323 polymorphism significantly predicted male verbalaggression and negatively predicted female indirect aggression.(3)After controlled the positive network news browsing preference,the negative network news browsing preference negatively predicted college students' hostility.After controlled the negative network news browsing preference,the positive network news browsing preference negatively predicted the total score of aggression,physical aggression and indirect aggression of College students.(4)Negative network news browsing preference positively predicted female G allele carriers' physical aggression and hostility,while positive network news browsing preference negatively predicted female T allele carriers' physical aggression.The interaction was further discussed,which supported the "different susceptibility model" instead of the "quality-stress model". |
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