Background: childhood aggression, particularly in preschoolers, is one of the most common behavioral problems throughout the world. Therefore, it is important to identify the predictors of this problem. This study was conducted to determine the predictors of physical and verbal aggression in preschoolers. Methods: This descriptive cross-sectional study was conducted on preschoolers in Rasht ...

This study examined the prospective relationships among borderline personality disorder (BPD) symptoms, interpersonal problems, and types of aggressive behaviors (i.e., experiencing psychological and physical victimization and perpetrating psychological and physical aggression) in a psychiatric sample (N = 139) over the course of 2 years. We controlled for other PD symptoms and demographic vari...

background: aggression is a kind of behavior that causes damage or harm to others. the prevalence of aggression is 8–20% in 3–6 years old children. the present study aimed to assess the effect of training kindergarten teachers regarding reinforcement behavior therapy on preschoolers’ aggression. methods: in this cluster randomized control trial, 14 out of 35 kindergarten and preschool centers o...

We investigated the reliability and (convergent and discriminant) validity of an observational measure of physical aggression in toddlers and preschoolers, originally developed by Keenan and Shaw [1994]. The observation instrument is based on a developmental definition of aggression. Physical aggression was observed twice in a laboratory setting, the first time when children were 1-3 years old,...

The direct and indirect relations between six types of prosocial behavior and physical aggression were examined. Data were gathered from 252 college students (M age = 21.67 years; 184 women) who completed measures of sympathy, prosocial behavior, and physical aggression. Structural equation modeling revealed that sympathy fully mediated the relations between compliant prosocial behaviors and ph...

In a longitudinal study with N = 1,854 adolescents from Germany, we investigated patterns of change and gender differences in physical and relational aggression in relation to normative beliefs about these two forms of aggression. Participants, whose mean age was 13 years at T1, completed self-report measures of physically and relationally aggressive behavior and indicated their normative appro...

The relations between normative beliefs about different forms of aggression and corresponding aggressive behaviors were investigated in 2 studies of adolescents. In Study 1, we revised an instrument designed to assess normative beliefs about aggression to include beliefs about the acceptability of relational aggression, and we examined the psychometric properties of the instrument. In Studies 1...

BACKGROUND The goal of the present study is to analyze the prevalence of bidirectional psychological and physical aggression in intimate partner relationships using the Conflict Tactics Scale (CTS-2), and to determine the influence of the variables age and relationship duration. METHOD The participants were 3,578 heterosexual couples from the Region of Madrid. RESULTS Bidirectional aggressi...

Sex differences in physical and indirect aggression have been found in many societies but, to our knowledge, have not been studied in a population of hunter-gatherers. Among Aka foragers of the Central African Republic we tested whether males physically aggressed more than females, and whether females indirectly aggressed more than males, as has been seen in other societies. We also tested pred...