The Mediational Role of Coping Strategies in the Relationship Between Self-Esteem and Risk of Internet Addiction

The aim of the present study is to explore, through a mediation model, the relationship among self-esteem, coping strategies, and the risk of Internet addiction in a sample of 300 Italian university students. We submitted the data to a descriptive, mediational comparison between variables (t-test), and correlational statistical analyses. The results confirmed the effect of self-esteem on the risk of Internet addiction. However, we found that the introduction of coping strategies as a mediator gives rise to partial mediation. A low level of self-esteem is a predictor of avoidance-oriented coping that, in turn, affects the risk of Internet addiction.

The term "coping" includes cognitive, emotional, and behavioural strategies that individuals use when they are in stressful situations in order to control associated unpleasant experiences (Folkman & Lazarus, 1988;Spagna, Russo, & Roccato, 2014). Those strategies are commonly classified into three categories: appraisalfocused, emotion-focused, and problem-focused (Endler & Parker, 1994).
Few researches have explored the role that the coping strategies may play in predicting the risk of Internet addiction (Deatherage, Servaty-Seib, & Aksoz 2014;McNicol & Thorsteinsson, 2017). The results of these studies point out that IAD is systematically linked to avoidance coping, a way of coping that is characterized by the effort to avoid dealing with a stressor.
Cyberspace may represent a place to hide when things go wrong. In this sense, accessing the Internet can be considered a negative coping strategy in facing stressful events. An excessive use of such a strategy may result in new forms of technology addiction because individuals, in the desire to escape from reality, completely avoid the source of stress (Tang et al., 2014). The results of a recent integrative review show that personal dispositional coping style predicts problematic computer use in adolescence (Trnka, Martínková, & Tavel, 2016). The authors of the review underlined the importance of further investigations because the current results indicate a higher differentiation of coping strategies in Internet addiction, and this relationship is still not sufficiently covered by present studies.
Most of the present Italian studies, in addition, focus on the predictors of the risk of Internet addiction, thus leaving unexplored the variables that might mediate this relationship. The present study aims to fill this gap by testing a model for analysing the mediating effects that coping strategies have on the relationship between selfesteem and Internet addiction. We propose an integrated model of the risk of Internet addiction, providing some empirical evidences about the complex nature of this disorder.

Aims and Hypotheses
The present study aims at investigating, through a mediation model, the role of coping strategies in the relationship between self-esteem and Internet addiction disorder. Previous studies have confirmed that people with low levels of self-esteem spend more time on the Internet, and are more susceptible to be addicted to information and communication technologies (Bozoglan et al., 2013;Yao et al., 2014).
Another frequently discussed issue concerns the role of the coping strategies. Individuals who have difficulty in coping with stressful real-life events are more likely to develop Internet addiction compared to others who can cope better with these stressful incidents (Chou et al., 2015).
Generally speaking, self-esteem and coping strategies seem to be systematically related: individuals with low self-esteem tend to adopt avoidance strategies when facing stressful events (Chapman & Mullis, 1999). To date, there are scarce evidences in literature that coping strategies mediate the link between self-esteem and Internet addiction. A study by Chiu (2014) showed that self-efficacy was a mediator between academic stress and smartphone addiction; another study has pointed out that poor coping and cognitive expectations mediate the relationship between generalized Internet addiction and factors such as self-efficacy and stress (Brand, Laier, & Young, 2014).
Coping Strategies, Self-Esteem, and Risk of Internet Addiction 178 The above-discussed results allow the definition of the following research hypotheses: self-esteem is an indirect predictor of the risk of Internet addiction; low levels of self-esteem will increase the use of avoidance strategies in the students, and these strategies in turn will increase the vulnerability to dysfunctional behaviour when using Internet in a maladaptive way.

Method Participants
A sample of 300 university students, who lived in the residential area of the campus, took part in this research.

Measures Demographic Information
A subject's profile was designed to include questions such as gender, educational background, and other relevant information. Then data about their Internet activities based on time spent online per day, type of online activities engaged daily (communication, surfing, and interactive activities), and the preferred time to establish a new Internet connection (morning, afternoon, evening and night) were obtained through a multiple-choice modality.

Self-Esteem
The Italian version of the Rosenberg Self-Esteem Scale (Prezza, Trombaccia, & Armento, 1997) was used to measure the subjective feelings of self-value and self-acceptance. Participants rated their agreement with 10 statements (e.g. "I feel that I have a number of good qualities") on a scale of 1 (strongly disagree) to 4 (strongly agree). Higher scores indicate higher self-esteem. The internal consistency in the sample of this present study was good (α = 0.83).

Coping Orientation to Problems Experienced -New Italian Version (COPE-NIV)
The COPE-NVI (Sica et al., 2008) is a 60-item measure of how people respond when they deal with difficult or stressful events in their lives. Every item is rated on a 4-point Likert scale ranging from 1 "I usually don't do this Servidio,Gentile,& Boca 179 at all "and 4 "I usually do this a lot". Its five subscales include social support (e.g. I try and get advice from someone about what to do), avoidance strategies (e.g. "I say to myself this isn't real"), positive attitude (e.g. I restrain myself from doing anything too quickly), problem solving (e.g. I concentrate my efforts on doing something about it), and turning to religion (e.g. I seek God's help).
Higher scores in a subscale indicate that participants tend to cope with stress by using those strategies. The internal reliability of the COPE-NVI in the present study was good (α = .83), whereas the alpha's value for each subscale was for social support (α = .88) avoidance strategy (α = .84), positive attitude (α = .63), problem solving (α = .73) and turning to religion (α = .75).

Young Internet Addiction Test (IAT)
We used the self-administrated Italian version of the Internet Addiction Test (IAT) to assess the participants' severity of Internet addiction risk (Servidio, 2017). The IAT includes 20 items rated on a five-point Likert scale (i.e. "How often does your job performance or productivity suffer because of the Internet?"). The response format ranges from 1 (Rarely) to 5 (Always), and the overall score can range from 20 to 100 (cut-off is 80), with higher scores reflecting greater life and social problems caused by a misuse of Internet services. For the current study, the Cronbach's alpha measure demonstrated good reliability (α = .90).

Procedure
All the study participants were recruited individually throughout the university campus during the lesson breaks.
The research assistant explained to the participants the general aim of the study, as well as the procedures and the methods of completing all the measures. Participants were also informed that their participation was voluntary, anonymous, and without any incentive. In order to encourage honest reporting, the anonymity of the study was emphasized at the beginning of each collection session. After receiving the informed consent from the participants, the research assistant administered the questionnaires to collect the data, which took approximately 20 minutes. All the research materials and study procedures were designed according to the Ethics in Human Research (Associazione Italiana di Psicologia, 2015).
Finally, the collected data were analysed via the software SPSS v.23.0. The multiple mediation effect in this study was tested using the macro PROCESS for SPSS through model 4 (Hayes, 2013). The bootstrapping method was used to test for the significance of the effect in order to obtain robust standard errors for parameter estimation. It produced 95% bias-corrected confidence intervals of these effects 10000 resamples of the data.
In addition, t-test for independent samples was ran to verify differences among the main variables of the current study and correlation analyses were computed. frequent problems due to Internet usage, which should warn these subjects about the Internet's negative impact on their life (scores 50-79). For this current study, no severe Internet addiction risk (scores 80-100) was found among the participants. Table 1 displays the correlations between the study variables. All the variables were significantly correlated in the expected directions. After this preliminary assessment, we evaluated the partialisation of the common variance through a direct test of the hypotheses by applying a mediation model. The results of the mediation analysis are showed in Figure 1. Note. The model reports both the significant (continuous lines) and not significant (dotted lines) relationships. The covariance relationships among the coping variables and the related values are depicted as well.

Discussion and Conclusion
The current study examines the mediation effect of coping strategies in the relationship between self-esteem and the risk of Internet addiction. As hypothesized, the results obtained through the mediation analysis show that the effect of self-esteem is influenced by coping style, in particular by avoidance coping, that is, the degree to which people engage in actions such as negation, humour, substance abuse, behavioural and mental disengagement. Low levels of self-esteem, in fact, are associated with a major use of avoidance coping that is pathologically expressed with the abuse of the Internet. However, the results suggest a partial mediation effect. Thus, people with low self-esteem are more at risk of developing a kind of "new-media psychopathology", where the Internet is the main tool of communication.
On one hand, the current study puts the results in line with literature, confirming self-esteem as predictor of the risk of Internet addiction (Andreassen et al., 2017;Bozoglan et al., 2013;Zhang et al., 2015). On the other hand, it explains the way by which self-esteem effects are mediated by the tendency to make use of coping strategies. Not all the coping strategies are involved in this relation: in fact, only the strategies based on avoidance play a significant role. Social support, for example, did not reach any significance, in contrast with the results of Naseri, Mohamadi, Sayehmiri, and Azizpoor (2015).
Coping Strategies, Self-Esteem, and Risk of Internet Addiction 182 Therefore, it is clear that people who are more at risk for Internet addiction seem to be those who use the Internet as a regular daily object of gratification for personal needs. Nevertheless, it should be noted that the result of the current study provides only a partial view of the link between self-esteem and the Internet addiction since coping strategies represent only one of the different factors that are able to mediate this relationship.
Another limitation of the present study concerns the specificity of the sample selected. University students are commonly a well-adapted population, therefore no clinical sample affected by pathological addiction to the Internet took part in this study. Thus, there is no evidence about possible direct or mediational effects of selfesteem and coping strategies for those who are seriously unable to control their Internet behaviour. To adequately generalize what was obtained here, these results should be replicated with a larger and stratified sample. Despite these limitations, however, the present study is the first to investigate the relation between selfesteem and the Internet addiction, linking this relation with participants' coping style. If high levels of selfesteem, associated with a low appeal for avoidance strategies, are factors that protect from the risk of Internet addiction, these results can be used as guidelines in academic counselling. Furthermore, understanding what are the risks factors of Internet addiction could help in preventing the risk of some psychological consequences, such as avoidance of responsibilities, personality changes, social alienation and the risk of other forms of addictive behaviours (Young, 2004).
Future research might investigate other potential predictors and mediators in the relation between self-esteem and Internet addiction, such as perceived stigma, resilience, and affective relations. In this way, new evidencebased strategies could be defined for the promotion of wellness and the prevention of Internet misuse.

Funding
The authors have no funding to report.