Individuals use the Internet for various purposes, such as shopping, communicating with others, following the news, making bank payments, and booking travel tickets, hotels, and cinemas (
1). These uses have become an essential part of individuals’ daily life. During the coronavirus disease 2019 pandemic, the role of the Internet and social networks increased (
2), and all students in Iran had to use the Internet to attend classes (
3). Other individuals have been using the Internet for similar reasons, communicating and following the news (
4). Therefore, the daily use of the Internet has become more widespread.
Using the internet might cause pathological behaviors and severe psychological problems (
5). One of the most researched topics in this area is internet addiction, which Young conceptualized in 1998 (
6). Then, this addiction was divided into different types, namely social network addiction (
7) and video game addiction (
8). Social network addiction, which began with the advent of the first generation of social media, showed individuals’ strong desire for frequent, excessive, and compulsive social network use (
7), which led to psychological problems, such as depression (
9), anxiety (
9), and interpersonal relationship issues (
10). Of related concepts in this area, fear of missing out (FoMO) and phubbing can be mentioned.
1.1. Fear of Missing out
Some researchers have focused on the motivations for using social networks and have mentioned the concept of FoMO as an important motivation for individuals to use social networks (
11). The FoMO can be defined as a person’s fear of not being present in the rewarding experiences that others might have (
11). Research has shown that FoMO can be one of the reasons for individuals’ participation and presence in social networks (
12). The FoMO forces individuals to constantly check and know more about what others are doing (
13). Therefore, this issue can affect their psychological well-being and behavior. Research on the motivations for using the Internet has shown that individuals are forced to use the Internet to avoid negative moods, such as loneliness and boredom (
13). In this regard, a person’s dissatisfaction with the current relationship can also affect compulsive use of the Internet and FoMO (
14). Research on FoMO and social network addiction, depression, and anxiety has pointed to the mediating role of FoMO in the pathological use of smartphones and social media addiction (
15). A recent meta-analysis addresses the level of FoMO associated with social media use and the pathological use of social media (
16).
It has been shown that FoMO is related to mental health and well-being (
17). A combination of FoMO and the excessive use of social media is associated with anxiety and depression (
15). Wegmann et al. studied FoMO as a personality trait or a state (
18). They consider the trait of FoMO as a personality trait to indicate a person’s overall FoMO on something. They consider the FoMO a complex and multidimensional structure that includes the trait-FoMO and the state-FoMO. Trait-FoMO refers to stable personal characteristics, and state-FoMO refers to online and interactive features (
18).
1.2. Phubbing
Checking and using smartphones in different situations is common among smartphone users. The word “phubbing” is a combination of “phone” and “snubbing,” which refers to a person who constantly looks at his/her mobile phone while doing another activity, such as talking to another person; therefore, interpersonal communication would be endangered (
19). At present, phubbing has become part of individuals’ daily interactions (
1). In a study, 90% of participants reported using their mobile phones during a social conversation (
20). Research has shown that this phenomenon can affect relationships negatively (
19). Research on the role of phubbing and its effect on romantic relationships has addressed several aspects, including a feeling of jealousy (
21), lack of intimacy (
22), and low levels of relationship satisfaction (
23).
Frequent phubbing in a person’s communication is also associated with high levels of depression (
24). Several predictors of phubbing have been identified in various studies, including lack of control (
25), FoMO (
26), mobile phone addiction, social media addiction (
27), and neuroticism (
28). Wegmann et al. developed the fear of missing out scale (FoMOs), a 12-item scale for measuring FoMO with two subscales (
18). The phubbing scale (TPS) was also developed by Karadag et al. (
27) to examine phubbing behaviors among mobile phone users.