Abstract Adolescent aggressive behavior has become one of the public health problems, and is affected by factors such as society,school,and family.Parents play an important role in the growth of adolescents. Parental control is seen as one of the rearing style,and closely related with adolescent aggressive behavior. This article reviews studies on the concept and classification of parental control, the impact of parental control on the psychological behavior of adolescents, the concept and measurement of aggressive behavior, the influencing factors of adolescent aggressive behavior, the impact of parental control on aggressive behavior, and the influence of demographic factors on both by consulting the existing literature, with the goal of providing references for reducing adolescent aggressive behavior improving parenting ability.

Objective: To understand the relationship among pubertal timing, overweight and obesity, and eating disorders among Bengbu adolescents, and to provide a reference for obesity prevention. Methods: Two nine year schools were conveniently selected in Bengbu, with 683 students from grade 5 to grade 8. Puberty Development Scale (PDS) and Eating Disorders Inventory of Children (EDI-C) subscale were used, height and weight were measured. The associations between obesity, pubertal timing and eating disorders were analyzed. Results: The prevalence of overweight and obesity was higher in boys than that in girls, and the rate of early pubertal timing, drive for thinness score, body dissatisfaction score and total eating disorder score were higher in girls than that in boys( χ 2/t =28.69, 57.99, 3.47, 2.59, 3.30, P <0.05). The differences in rate of overweight and obesity, bulimia score and total eating disorder score were statistically significant by grade( χ 2/F =28.39, 5.11, 3.95, P ＜0.01). There was a positive correlation among overweight obesity and early pubertal timing and eating disorder, and a positive correlation between early pubertal timing and eating disorder( r =0.18, 0.17, 0.14, P < 0.01 ). The mediating effect of early pubertal timing between overweiht, obesity and eating disorders partially contributed 14.25% to the total effect. Conclusion Overweight and obesity is associated with eating disorders, and early pubertal timing partially mediate the association between overweight obesity and eating disorders. Healthy lifestyle should be advocated in family and school to effectively prevent adolescents obesity, pubertal timing, and eating disorders.

Objective: To explore the influence of parents educational level and family type on the level of parental control, so as to lay a foundation for improving parental education and promoting adolescents mental and physical health. Methods: In April 2019, random cluster sampling was used to select 1 046 students in junior and senior high schools in Bengbu. Information was collected through the Chinese version of Parental Control Questionnaire, and SPSS 25.0 for statistical analysis was used. Results: Mother s behavioral control and mother s educational level were significantly positively correlated( r =0.18), father s behavioral control and father s education level were significantly positively correlated( r =0.16). There was a significant positive correlation between the total score of maternal control and mother s education level( r =0.16). The total score of father s control was positively correlated with the education level of the fathers( r =0.12)( P <0.05). There was significant differences between the parents with different education level on parental control( H =16.93, 32.21, P <0.05). The score on parents behavioral control with primary school education or without education low among the parents with other education levels. There were differences between different family types in the total score of parental control( F =2.63, 3.55, P <0.05). Compared with extended families and nuclear families, single parent families total scored had significantly lower in father s control, and single parent families total scored significantly lower in mother s control scores than extended families. Parents educational level and family type had significantly predicted effect on parental behavioral control. Conclusion Parents educational level and family type have an influence on parents psychological and behavioral control, and have a predictive effect on parents control level. Parental control levels should be improved by improving the family s upbringing environment.

Objective: To explore the relationship between aggressive behavior and emotional management of middle school students. Methods: A total of 1 046 middle and high school students in Bengbu were randomly selected by cluster sampling. Information was collected through the Children s Emotion Management Scales and Buss & Perry Aggression Questionnaire. Results: The scores of emotional management of male students (11.74±2.25, 9.29±1.98) were higher than that of female students(11.19±2.11, 8.76±1.95)( t =4.06, 4.29, P <0.01), and the scores of anger management of grade 8 students (8.55±2.13) were lower than that of grade 9, grade 10 and grade 11 students(9.21±2.06, 9.14±1.73, 9.16±1.85)( F=3.53, P <0.01). The score on anger (18.42± 5.71 ) was high among male students (16.32±5.06) ( t=6.27, P <0.01) and the total score (78.48±16.39) was high among female students(75.78±17.79)( t=-2.55, P <0.01). The aggression level in grade 8 students (82.09±19.21) was significantly higher than grade 9, grade 10 and grade 11 students(76.57±16.83, 75.05±15.34, 74.42±13.09)( H=25.16, P <0.01). The results of correlation analysis showed that sadness management was negatively correlated with physical aggression, angry behavior, hostility and aggressive behavior( r=-0.10, -0.18, -0.08, -0.12, P <0.01), anger management was negatively correlated with physical aggression, verbal aggression, anger, hostility, and aggressive behavior( r=-0.25, -0.09, -0.36, -0.15, -0.29, P <0.05). Regression analysis showed, anger management was negatively associated with aggressive behaviors in both boys( B=-2.48, 95%CI =-3.17- -1.79 ) and girls( B=-2.93, 95%CI =-3.67--2.20), sadness management was negatively associated with girl s hostility( B= -0.26 , 95%CI =-0.54-0.01)( P <0.01). Conclusion Higher level of emotional management, less aggressive behavior. Emotional management improvement among middle school students can effectively prevent and reduce the occurrence of aggressive behavior.

Objective: To understand the interrelationships of parental control, peer relationship, and aggressive behavior in junior high school students, in order to provide a theoretical basis for preventing the occurrence of adolescent aggressive behavior. Methods: During June to July, 2022, 2 564 students of grade one to grade three were selected from 6 junior high schools from each of Suzhou and Xuancheng cities in Anhui Province by using convenient cluster random sampling method, and then the questionnaire survey was administered, including the Chinese version of Parent Control Questionnaire, Chinese version of Buss & Perry Aggression Questionnaire and Adolescent Peer Relationship Questionnaire. Results: Boys scored (185.31±27.49, 21.65±7.43, 21.77 ±8.18, 69.50±11.41, 72.39±11.53) higher than girls (178.21±25.13, 20.08±7.09, 20.61±7.62, 66.56± 11.14 , 70.95± 11.84 ) in parental control, father s psychological control, mother s psychological control, father s behavioral control, and mother s behavioral control ( t =8.63, 5.47, 3.70, 6.60, 3.12), while girls scored (48.41±11.26) higher in peer relationship than boys ( 47.13 ± 10.84 ) ( t =-2.95) ( P <0.01). The scores of first grade students in parental control, father s psychological control, mother s psychological control, father s behavior control, peer relationship, and aggressive behavior (184.67±27.18, 21.83± 7.29 , 22.15±8.07, 68.81±10.95, 50.21±9.57, 80.23±17.66) were higher than those of second gradestudents (180.98±25.46, 20.16±7.82, 20.21±7.55, 68.29±11.69, 45.47±11.67, 74.08±17.70) and third grade students (179.21±26.79, 20.53±7.22, 21.17 ± 8.06 , 66.81± 11.39 , 47.54±11.43, 75.75±16.29) ( F =9.44, 12.87, 13.61, 6.84, 42.85, 30.40, P <0.01). The scores of parental control and peer relationship were positively correlated with the scores of aggressive behavior ( r=0.22, 0.47, P <0.01). Peer relationship partially mediate the relationship between parental control and aggressive behavior, with a partial mediation effect value of 0.04, accounting for 26.39% of the total effect of parental control on aggressive behavior. Conclusions High parental control and poor peer relationship are both positively correlated with the level of aggressive behavior. The peer relationship of teenagers should be improved by establishing appropriate parenting style, tackling campus violence, and maintaining good social norms, in order to reduce the occurrence of aggressive behavior among adolescents.