Abstract
Keywords
Introduction
Academics from the fields of psychology, communication studies, and human-computer interaction have studied young people’s relationship with the Internet from many points of view for the past few decades. One important factor, discussed in a growing body of literature, is excessive use of the Internet. Researchers have largely conceptualised excessive use in one of two ways: as an addiction or specific pathology, or more generally as problematic use (Beard & Wolf, 2001; LaRose et al., 2003). However, as Beard and Wolf (2001) state, none of the literature up to the early 2000s had attempted to produce a testable theory, instead researchers simply disagreed about how to operationally define the construct.
Addiction versus Problematic Behaviour
While numerous theories have been developed at this point in time, the debate about construct definition continues. Internet Addiction (IA) was originally conceptualised as having four primary diagnostic elements: (1) an increasing level of investment of resources in online activities, (2) a negative change in emotional states when offline, (3) a tolerance to the positive effects of Internet usage, and (4) denial that Internet use is a problem (Kandell, 1998). While the Internet Addiction point of view was widely held by many researchers it suffered from numerous issues, including a lack of conceptual specificity or empirical backing, and primarily that it does not account for the very wide range of behaviours in which a person can engage while online (Davis, 2001; Shaffer et al., 2000). We will use the term Problematic Internet Use (PIU) to reflect the broader conceptualisation described by Beard and Wolf. This decision has two advantages: firstly, it maintains a broad focus for the range of potential Internet use behaviours, and 2) it avoids drawing a distinction about whether a particular online behaviour
Cognitive-Behavioural Models and Advancements
Working from the conceptualisation of excessive Internet use as a
Another major theory is the Interaction of Person-Affect-Cognition-Execution (I-PACE) model (Brand et al., 2016). This model has a basis in cognitive behavioural theory, but also includes neuropsychological factors, and processes associated with substance use addictions. Other researchers have also proposed theories of PIU focusing on meeting basic needs, general proneness to problem behaviours, perceived importance of online behaviour, and emotional dysregulation (Casale et al., 2016; Kim & Davis, 2009; Ko et al., 2008; Wong et al., 2014). However, there is considerable variety in the literature, which is maintained in part by the lack of agreement on conceptual or even descriptive frameworks of PIU.
Controversies in PIU
Scholarly debate on the topic of generalised versus specific PIU is ongoing since Davis coined the terms in 2001. Research using generalised models has observed good fit and accounted for substantial variance in online behaviours (Haagsma et al., 2013; Moreau et al., 2015). Other studies have directly tested this issue and observed greater specificity and nuance by considering specific online behaviours individually (Van Rooij et al., 2017). More contentious however is the move to formalise diagnostic criteria for PIU. In the fields of medicine and psychology both classification systems and clinical practice often develop more quickly than academic disciplines can produce research findings. A prominent example is the inclusion of Internet Gaming Disorder (IGD) in Section 3 of the Diagnostic and Statistical Manual of Mental Disorders fifth Edition (American Psychiatric Association, 2013), which was met with considerable criticism (Kuss et al., 2017; Van Rooij & Kardefelt-Winther, 2017).
Formulation as an Alternative to Diagnosis
The current models of classification of mental illness, the DSM-V (American Psychiatric Association, 2013) and ICD-11 (WHO | ICD-11 Revision, 2018), view PIU through the lens of ‘disease’. An alternative to the disease model of mental health is a process called psychological formulation. This approach is how psychologists organise and synthesise information about a clinical case. In contrast to the disease model, formulation takes into account the broad bio-psycho-social view of an individual and accepts that their presenting difficulty will have idiosyncrasies, rather than fit into a diagnostic category (Johnstone, 2018). Thinking of an individual’s difficulty regulating their time spent on online activities in this way avoids the need to engage in the debate around diagnostic categories and instead offers the opportunity to work with individuals on a case-by-case basis. Though formulation is commonly used in clinical practice it is more difficult to bring into the research space, due to its flexibility, and the bespoke nature of every individual’s case formulation. In this paper we present one way to achieve this, by using a psychological formulation model as a deductive framework to analyse elements of published theories.
The present review
As discussed above, the scientific literature has not a reached consensus about a definitive theory of PIU. At the point of writing no systematic review has been published on this topic yet there is a clear need to identify all of the attempts to explain PIU and synthesise these diverse approaches to make the academic efforts actionable for practicing psychologists. To this end ‘Formulation-Based Thematic Analysis’ (see Supplemental Material) will be used to synthesise the information proposed by theories, categorising the findings in a useable structure.
Method
Study Design
Given the breadth of the above aim a scoping review methodology was utilised following Colquhoun et al. (2014) and guidelines published by Arksey and O’Malley (2005) and furthered by Levac et al. (2010). As such the current review progressed through the following steps: • Identifying the research question • Identifying relevant studies • Study selection • Charting the data • Collating, summarising, and reporting the results
Search Strategy
Three key components within the search strategy were the Internet as the medium/context, Addiction or Problematic use, and Theory or model. Each of these three domains was reflected in the scoping search with the following terms and variations: ((Internet OR Online OR Gaming OR Social Media OR Facebook) AND (Addiction OR Pathology OR Problematic OR PIU OR Excessive OR Compulsive) AND (Theor* OR Model)). The following databases: Proquest, Scopus, Google Scholar, and Technology Research Database. In the instance where full-text papers were not available through institutional subscriptions authors were e-mailed using the corresponding author address on the paper and the texts were requested through the ResearchGate Web site. Where no response was received, as occurred for two papers, the studies were excluded from the review.
Inclusion/Exclusion criteria
As this is a scoping review, strict methodological criteria were not applied to papers. Papers were Prisma flow chart. Overview & characteristics of models. Formulation-Based Thematic Analysis (FBTA) results model.

Screening procedures and validity
One reviewer ran the searches in each database, downloading the titles and abstract files. The analysis of duplicates and the formal Title and Abstract screening stages were conducted using the
Data extraction
As per the Arksey and O’Malley (2005) guidelines an iterative approach to data extraction was taken, whereby the data extraction form was revised as needed to reflect the information reported in the papers. In general, the data extracted reflected: a description of the conceptual construct, a description of the relevant problematic Internet behaviours (generalised Internet use, social media, online gaming, etc.), a description of the proposed bio-psycho-social factors (predisposing, precipitating, maintaining, protective), and a description of how the proposed factors relate to one another to explain the PIU. One reviewer completed this process; however, two reviewers piloted the procedure on a small number of studies and difficulties or amendments to the procedure were discussed and resolved.
Data Analysis/Synthesis and Reporting
Data analysis will take the form of Formulation-Based Thematic Analysis (FBTA, see Supplemental Material). This approach uses the primary formulation categories described by (Carr, 2015) involving the organisation and synthesis of Predisposing, Precipitating, Maintaining, and Protective Factors pertinent to the presenting problem. The proposed bio-psycho-social factors from theories were sorted into one or more of these categories based on how these factors and their interaction were described by authors. This approach to data synthesis allowed for a meta-view of the theoretical landscape to be taken, through the lens of psychological formulation. It is hoped that this will meet the aim of the study and widen the potential space for hypothesis generation for future studies. Reporting of the review followed the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement (Moher, Liberati, Tetzlaff, & Altman, 2009).
Results
Overall search findings
Table of included studies, theoretical details, and formulation elements reflected in theories.
Overview & Characteristics of Models
Nine of the models conceptualised the presenting problem as generalised problematic Internet use, seven conceptualised specific Internet use disorders, while two took account of both generalised and specific PIU in their models. In terms of general theoretical underpinnings eight models cited cognitive-behavioural theory as the foundation for their models. These models favour the role thoughts, feelings, and behaviours, as per the cognitive model presented by Aaron Beck (Beck, 1997; Beck & Haigh, 2014). Two are based on substance addiction models. Two are based on the Social Cognitive Theory of Self-Regulation, which encompasses the monitoring of one’s own behaviour, judgements about this behaviour, and affective responses (Bandura, 1991). Three models are based on the concept that Internet use is a means to satisfy needs that are otherwise unmet: one based on The Theory of Rational Addiction and two based The Compensatory Internet Use Model. Finally, one model is based on neuropsychological principles, tracking the physical structures in neuroanatomy that are linked to addiction. Figure 2 presents the results of the Formulation-Based Thematic Analysis (FBTA) in a graphical model. Results are furtehr described below.
Predisposing factors for problematic Internet use
Analysis of the codes that were grouped under the over-arching deductive heading of Predisposing Elements led to the creation of five themes that theoretical models have indicated could predispose an individual towards problematic use of the Internet. These are titled:
Precipitating factors for problematic Internet use
Precipitating factors, those variables that initially facilitate the usage of an online activity that eventually develops into a pattern of usage that causes problems were described in fourteen of the eighteen models (14/18). It is important to note that many of the factors described here also feature in the next section as the processes that initially lead to problematic usage were also presented in the models as processes that maintain problematic usage. Analysis of the codes that were under the over-arching heading of Precipitating Factors yielded six distinct themes:
Maintaining factors for problematic Internet use
This section of the results reports on the analysis of codes that describe the factors that perpetuate unregulated Internet use, once an individual has already developed a problematic pattern of usage. Of note this over-arching deductive formulation category was the only one to contain an element of every theoretical model in the review. This greater representation is reflected in the greater number of themes that emerged from the analysis of this category:
The
The theme of
Protective factors against Internet use becoming problematic
Codes representing variables that could be preventative against developing, or lessening the impact of, problematic Internet use were only identified in two theoretical models (2/18). Within this formulation element three themes emerged:
Specific versus Generalised Problematic Internet Use
Thus far, all themes have represented the analysis of all the included theories, which is consistent with the aim of the study – to synthesis all of the theoretical attempts to explain the phenomenon of PIU. However, given the debate around classification of Internet use disorders, and the move for IGD to be included in the classification systems, a further analysis was carried out on six theories, the three that specifically focused on problematic internet gaming, and the three that focused on problematic social media use. While models such as that of Brand et al. (2016) are designed for specific Internet use disorders the model can still be applied to any specific Internet use disorder, so is not included in this section. All themes have been described in the preceding sections so will be reported on briefly below.
Looking first to problematic Social Media use, the analysis of three theories produced themes under the formulation categories of Predisposing, Precipitating, and Maintaining. Under Predisposing the only theme was
Looking next to problematic Internet Gaming, the analysis of these three models produced themes under each of the four formulation categories. Under Predisposing
Discussion
Overview of results
This paper provides the first over-view of the theoretical attempts to explain the phenomenon of problematic Internet use (PIU). While this area is fraught with disagreements about the conceptualisation of the issues and the need to regard it as a diagnosable condition the approach taken to synthesising the results of this review is an attempt to transcend this issue by using a novel analytical framework, Formulation-Based Thematic Analysis, to categorise and synthesise the elements described in theories. In terms of contributions to the literature this review makes two distinct original contributions. Firstly, we offer a comprehensive systematic review identifying the diverse attempts to offer theoretical explanations of PIU. Secondly, we offer practicing psychologists a framework for a) understanding the issue in academic terms, and b) for building a formulation for client-work, which is individual to the personal and social circumstances of the client as well as their unique pattern of engagement with online media.
Our systematic review methodology identified eighteen theoretical models that met inclusion criteria for the study. Of these, eight models cited cognitive-behavioural theory as the foundation for their models. Two are based on the Social Cognitive Theory of Self-Regulation. Three models are based on the concept that Internet use is a means to satisfy needs that are otherwise unmet: one based on The Theory of Rational Addiction and two based The Compensatory Internet Use Model. Two are based on substance addiction models. Finally, one model is based on neuropsychological principles, tracking the physical structures in neuroanatomy that are linked to addiction. Taken together these models offer a view of PIU from a wide variety of perspectives. Another layer to their view is whether the theory was attempting to account for generalised or specific PIU. Our analysis of three models specifically looking at gaming and three at social media revealed some important differences between factors included in the theories. Most notable was the focus on cognitive processes, such as executive-functioning (particularly set-shifting), biased cognitions, and an innate high reward-sensitivity, in the gaming theories while these factors were absent from the social media theories. Importantly the theme of Socialising emerged from the analysis of both set of theories, a finding that highlights the social element of online gaming, and, in one theory a high level of involvement was considered a protective factor (Snodgrass et al., 2018).
Lack of protective factors
An interesting finding of our analysis was the dramatic under-representation of other protective factors in the included theoretical models. While all models included factors that were considered maintaining, and the vast majority included elements that were considered predisposing and precipitating only two theories specifically identified protective elements. It could be argued that the lack of, or opposite of, many of the precipitating and maintaining factors could in fact be protective. However, our analytic methodology set out to synthesise only what was explicitly described by theory authors, and not to make inferences beyond this. As such, the lack of identified protective factors – a key element in any therapeutic treatment plan – is an important result of our study. Of note, Dong and Potenza (2014) do suggest specific areas for therapeutic focus based on their model, but they do not describe protective factors per se.
Contextualisation of findings
An ominous absence from any of the theoretical models in the study is the role of parenting. Given that most of the societal-level concern surrounding PIU is linked to adolescents, there is no theory which address this factor. In a previous study on this topic we reported on practicing psychologists’ formulations of PIU. Results observed a high focus on the role of parenting – both in terms of monitoring/managing usage, and in terms of modelling healthy use of technology (Authors, In Preparation). In general, our review is best contextualised within the debate surrounding classification and diagnosis. While this paper attempts to avoid engaging head-on in the debate surrounding Internet Addiction and Internet Gaming Disorder we believe that our approach offers a means for advancing research in the area. Multiple studies have pointed to the issues with construct validity of IGD and PIU (Aarseth et al., 2016; Kardefelt-Winther, 2017; Ryding & Kaye, 2017; Van Rooij & Kardefelt-Winther, 2017). Further, in their study on the clinical relevance of IGD Przybylski et al. (2017) observed that of the 18,932 gamers in their study only between 0.3 and 1.0% reported symptoms consistent with the ‘disorder’. In this context research should consider whether classifying online behaviours as addictions is of any real benefit. Rather, we propose a move away from classifying common behaviours, like Internet use, as disorders and move in favour of helping those few individuals who do develop problematic usage patterns.
While the present review has breadth as a core strength of its approach this also brings an important weakness. Given that the scoping review aimed to capture the diversity of academic thinking on this issue and synthesis the findings in an actionable way for psychologists it lacks a critical review of the empirical literature, both used to justify the arguments in the theoretical models, and the published literature since models were published. We acknowledge that this was beyond the scope of this review but it is an important caveat to place on our findings. Nevertheless, we believe that the present review offers a foundation from which sound inferences could be drawn and tested, ideally taking into account mediating and moderating factors as outlined by Kardefelt-Winther (2017).
Practical applications
As a practical contribution, our results offer a framework to psychologists or psychiatrists conducting an assessment with a client who uses the Internet to a problematic extent. Specifically, the predisposing factors suggest important elements to consider when taking a clinical history, while the precipitating and maintaining factors indicate the processes which should be considered when assessing how a problem behaviour originated. Our findings complement the review of the existing psychometric measurement tools by Laconi et al. (2014). Finally, the processes identified in our review point to therapeutic approaches that could help a client to re-gain control over their Internet use.
Conclusions & Future Research
The present study offers an over-arching view of the topic of PIU, from both a theoretical and applied perspective. Future research should explore clinicians’ formulations of PIU further to assess their over-lap and complimentary relationship with scientific theory, particularly at this early stage of research on the topic. An important factor that future studies should explore is the protective factors, that were under-represented in the models included in our review. Finally, while producing the scientific basis to build a sound conceptual theory of these difficulties takes time, practicing clinicians are strongly influenced by the major classification systems. Our findings offer an alternative approach to these systems, while acknowledging the developing theoretical landscape.
Supplemental Material
Supplemental Material - Using Theoretical Models of Problematic Internet Use to Inform Psychological Formulation: A Systematic Scoping Review
Supplemental Material for Using Theoretical Models of Problematic Internet Use to Inform Psychological Formulation: A Systematic Scoping Review by Conall Tunney and Brendan Rooney in Clinical Child Psychology and Psychiatry.
Footnotes
Declaration of Conflicting Interests
Funding
Supplemental Material
References
Supplementary Material
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