Results
aggression, anger, hostility, verbal aggression
REGRESSION
The data analysis was done on two levels and through the indicators of descriptive statistics (mean and standard deviation) and inferential statistics.The descriptive findings of the experimental and control groups in aggression subscales are in Table 
Comparison of the mean and standard deviation of the total score of aggression, physical aggression, verbal aggression, anger, and hostility in the experimental and control groups in the pre-test and post-test stagesTable The scores’ assumed normality distribution was examined prior to analyzing the aggression data, and the findings supported this assumption’s establishment (p > 0.05). In addition, the homogeneity of regression assumptions was confirmed. Table 
Aggression (general) scores in two groups (ANCOVA)According to Table Table 
ANCOVA of post-test scores of physical aggressions in two groupsAccording to Table Table 
ANCOVA of verbal aggression post-test scores in two groupsAccording to Table This means that about 23% of the changes in verbal aggression in students are due to training and this amount is significant.Table 
ANCOVA of post-test anger scores in two groupsAccording to Table Table 
ANCOVA of hostility post-test scores in two groupsAccording to Table 