Using the internet for social interaction and instruction has increased among adolescent students. Both adolescents and children may become heavy internet users and become addicted to it, accompanied by an uncontrollable motivation for its use (
1) and spending considerable time on it (
2). Internet addiction causes problems such as eating disorders (
3), low self-esteem (
4), depression (
5), and anxiety (
6). It has destructive effects on the health of adolescent students, such as sleep disorders, anxiety, and depression (
7). Many studies have examined the risk factors of internet addiction. Apart from factors such as personality-related characteristics and impulsive behavior, the impact of the family on internet addiction has been greatly emphasized in some studies (
8). For example, negative parenting styles, including violent parenting, increase adolescents' internet addiction risk (
9). Parenting styles are the parents' attitudes and behaviors toward their children and using specific methods to educate them (
10). According to Baumrind and Schaefer's theory, there are three parenting styles: Permissive, authoritarian, and authoritative (
11). The permissive parenting style is high in acceptance and responsiveness but low in demand and control (
12). According to the literature, the children of parents with a permissive parenting style have more online relationships and internet addiction (
13). Authoritarian parents set rules, guidelines, and precise boundaries within their family. This parenting style is in high demand, has low responsiveness, and is characterized by strict control over the children's independence (
14). Some studies indicate that an authoritarian parenting style leads to addictive internet use in children (
15). Meanwhile, the authoritative parenting style, while respecting the children's personality, instills social values and enjoys a high degree of intimacy with children (
16). Yaffe and Seroussi (
17) showed that an authoritative parenting style fosters intimacy between children and parents, thereby causing them to have better relationships with each other and spend less time on the internet.
Research suggests that harsh parenting style, directly and indirectly, affects internet addiction. Besides parenting styles, bullying is a variable that can directly or indirectly impact internet addiction. Bullying is a deliberate and aggressive harassing behavior repeated by a person or persons at a particular time when power is unequally distributed (
18). Indeed, bullying is a complex behavior requiring a precise understanding of the social dynamics of peer groups and schools (
19). In general, bullying in scientific and educational texts is defined as repeated aggressive behaviors aimed at harming the person with less power and has three characteristics: Voluntary behavior, power inequality, and repetition of action (
20).
Strong research evidence suggests that children's exposure to maltreatment significantly contributes to the risk of being involved in bullying behavior as a victim or perpetrator (
21). Adolescents involved in bullying behavior as either victims or perpetrators often exhibit fewer social connections, are more heavy users of the internet and tend to establish relationships in cyberspace rather than the real world to achieve a sense of belonging. This may contribute to their addictive behavior on the internet (
22). Studies have revealed that parenting styles are associated with bullying behaviors (
23-
25). In the authoritarian parenting style, children receive little love and attention from their parents, and during childhood, they constantly experience more aggression, punishment, and blame than their peers. These children experience significant anger, hatred, and low creativity and self-esteem due to unsatisfied emotional needs (
26). In other words, people who suffered considerable violence as children and were constantly bullied attempt to compensate for these behaviors on others and society in adulthood, which can manifest itself as various bullying behaviors, such as delinquency, theft, obscenity, and being beaten (
24). In the permissive parenting style, if the relationship between the parent and the child is of poor quality (e.g., in cases where the parents use incorrect parenting methods or have unstable supervision and neglect the child's behavior), adolescents may show norm-breaking and antisocial behaviors (
27). Indeed, these people, who never experienced any behavioral restrictions as children and did whatever they liked, cannot bear hearing no when they enter the community upon adulthood and do everything to make their wishes come true, which forms bullying behavior (
23). Therefore, virtual and non-face-to-face interactions, due to the possibility of unrestricted entry and exit and the absence of direct physical harm, free people from the immediate anxiety caused by their behavior. As a result, cyberspace is a safer place for people who are highly anxious about the annoying consequences of their behavior. The widespread prevalence of internet addiction among students and their numerous problems, the importance of parenting styles and bullying, and the role of each variable in internet addiction led the researcher to conduct this study. Research on the relationship between these variables and internet addiction in female students can be the basis for designing and administering intervention programs to promote healthy behaviors in these students. Therefore, the present research aimed to investigate the specific and common effects of parenting styles and bullying on internet addiction