Hamid Shamsipour - Department of Psychology, School of Psychology and Education, University of Tehran, Tehran, Iran.
Meysam Bazani - Department of Clinical Psychology, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mojtaba Tashkeh - Mental Health Research Center, School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran.
Said Mohammadi - Mental Health Research Center, School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran.

Objective: Emotion dysregulation, negative affects, and aggression can affect each other. This study aimed to demonstrate the role of the negative effects and emotion dysregulation in aggressio. Methods: The statistical population was Kharazmi University students that ۲۸۰ of them were selected by random multiphasic sampling method. The study instruments were Buss-Perry aggression questionnaire, the short form of cognitive emotion regulation questionnaire and positive affect and negative affect scale. The Pearson correlation, Student t test, and hierarchical regression tests were used to analyse the data. Results: Gender, negative affect and maladaptive emotion regulation strategies (rumination, catastrophizing, and others blaming) were correlated with aggression. After controlling for gender and negative affect, maladaptive emotion regulation explained only ۰.۰۲۹% of the aggression variance and in this case and negative affect could explain ۱۱.۴% of its variance. Furthermore, by controlling for gender and negative affect, others blaming and catastrophizing strategies could explain ۰.۰۷۷% of the aggression variance. Conclusion: This study demonstrates the more important role of negative affect in predicting aggression. It seems that efficient methods to improve mood state can be helpful in aggression reduction.

Aggression, Emotional disturbance, Affect