For or against Brexit? : Justifying oppositional arguments in online discussion

      , . 25 . 3, S, 2020 Contents | Author index | Subject index | Search | Home For or against Brexit? Justifying oppositional arguments in online discussion Reijo Savolainen Introduction. This investigation examines argumentation about political issues occurring in online discussion groups. A case study was made by concentrating on debates about Brexit - the prospective withdrawal of the United Kingdom from the European Union. Method. Building on Toulmin’s model for argument patterns, it was examined how oppositional arguments about Brexit were grounded by drawing on facts and opinion-based evidence and how the evidence of information these types was justified. To this end, a sample of 40 discussion threads initiated before the 2016 Brexit referendum were downloaded from PoliticsForum - an online platform. Analysis. The data consisting of 1563 messages were scrutinized by means of descriptive statistical analysis and qualitative content analysis. The focus was placed on the latter method by analysing the ways in which the discussants justified the rebuttal of opposing arguments. Results. Oppositional arguments justifications were mainly based on the description of personal opinions and negative evaluation of opposing views. Analytic approaches to justification based on explanation and comparison were less popular. This preference is probably due to the lower cognitive effort required while simply describing the attributes of an entity or judging its positive or negative qualities by drawing on one’s beliefs and experiences. Conclusions. Argumentation occurring in online platforms will form an increasingly important part of political struggles. On the other hand, online debates on controversial issues such as Brexit tend to be broad rather than deep. Introduction Social media forums offer new opportunities to debate social and political issues. Recent evidence of the potential of social media was obtained from the United Kingdom’s Brexit referendum on EU membership in 2016. Official campaigns, politicians, and citizens engaged heavily in discussions on social media For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 1 of 18 9/17/2020, 11:15 AM platforms to communicate Brexit-related information and arguments, gain attention, and influence voters. Arguably, the referendum about Brexit, a portmanteau of British and exit; the prospective withdrawal of the United Kingdom from the European Union - was the most significant political event in the UK in half a century (Hall et al., 2018, p. 21). Although the main emphasis will be placed on the analysis of arguments presented in online debate, this study is also relevant for research on information sharing and use occurring in online forums. Since the 1980’s, there is a growing body of empirical research on this topic. The ways in which people share and use information in online forums have been examined in a variety of contexts ranging from political debate (Garramone et al., 1986), health-related issues (Zhang, 2016), consumer awareness (Savolainen, 2015b) and hobbies (Lee, 2009). The present study enriches the repertoire of studies of this kind by focusing on political debate among citizens. The present investigation contributes to research on the use of social media platforms by examining Brexit debates occurring in an online discussion group before the 2016 referendum. The study was inspired by the idea that argumentation occurring in online platforms will form an increasingly important part of political struggles. In the case of the Brexit referendum, such platforms offered people open venues to defend their arguments and possibly appeal to voters considering whether the UK should remain in the EU or leave it. To examine this issue, an empirical study was made to find out how the participants of online discussion bolstered their arguments informationally by drawing on facts and personal opinion. The research topic is unique because, to my knowledge, there are no previous studies on the Brexit debates occurring in online discussion groups. Drawing on Toulmin’s (2003) model for argument patterns, the present study concentrates on the nature of oppositional argumentation. It emphasizes the role of rebuttals questioning the evidence presented by the discussants. As Brexit is a controversial issue, opposing arguments are common in online debates. Therefore, successful argumentation depends on how the participants are able to defend their arguments. To examine this issue in greater depth, this study seeks answer to the following question: how are oppositional arguments about Brexit justified in online discussion by drawing on facts and opinion-based evidence? The rest of the article is organized as follows. First, to provide background, the nature of argumentation occurring in online forums is characterised and the main issues of Brexit are briefly described, followed by the specification of the conceptual framework and the empirical research setting. Thereafter, the empirical findings are reported; the final sections draw conclusions from their significance. Background Argumentation in online forums Argumentation can be generally defined as a discursive process involving at least two individuals engaged in dialogue, each contending differing positions and trying to persuade each other (Tindale, 2004, pp. 2-3). Zarefsky (2008, p. 632) characterized argumentation as the ‘practice of justifying claims under conditions of uncertainty’. Therefore, argumentation establishes not what is objectively true, but what a person should consider to be true. It involves proffering and testing claims against the scrutiny of others. The claims that withstand critical scrutiny, though they cannot be verified, can be taken as true and acted upon with a high degree of confidence. Since the 1990s, online discussion groups have provided venues for argumentation about diverse topics ranging from health issues to daily politics (Himelboim, 2008). Different from argumentation occurring in face-to-face conversation between two speech partners, online debates are characterized by multivocal and sometimes chaotic exchanges among the participants (Marcoccia, 2004). In online discussion groups, argumentation is based on the messages submitted by the participants. The messages are contained in threads, where they appear one after another so that the first post starts the thread focusing on a topic. A thread can contain any number of posts, including multiple posts from the same contributors, even if they are one after the other. For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 2 of 18 9/17/2020, 11:15 AM Politics occupies a prominent place among the topics debated in online discussion forums. Himelboim (2008) characterised political discussion groups as opinion-based conversation forums where one participant’s opinion is unlikely to be more or less valuable than another’s. According to Lewinski (2010, p. 90; p. 103), political discussions occurring in online discussion groups are informal and bottom-up initiatives hosted by politically engaged internet users. In such forums, opinions are publicly expressed, challenged, defended and criticized. As online discussions are a specimen of informal public deliberations, they are not necessarily concluded by binding decisions reached at the end of the process of exchange of arguments. Moreover, the lowered sense of social presence experienced online may encourage expression of dissenting views. Therefore, online forums can allow people to reinforce their predilections, based on their interactions with agreeable associates. In this case, online discussion groups may serve as echo chambers where like‐minded people are exposed to one‐sided arguments, which can further reinforce their initial predilections (Wojcieszak and Mutz, 2009, p. 42). Brexit The UK joined the European Communities (EC) in 1973, with membership confirmed by a referendum in 1975. From the 1990s, the withdrawal from the EC has mainly been advocated by the United Kingdom’s Independence Party (UKIP) and an increasing number of Eurosceptic members of the Conservative Party. Under pressure from many of his MPs and from the rise of UKIP, Conservative Prime Minister David Cameron announced in 2013 that a Conservative government would hold an in-out referendum on EU membership, if elected in 2015 (Mölder, 2018). The Conservative Party won the general election, and Cameron kept his promise by announcing that the referendum would take place 23 June 2016. The referendum was preceded by a number of campaigns defending the pros and cons of leaving or remaining a member of the EU. Kramer (2016) provides a useful summary of the main arguments presented by the Leavers and Remainers (see Table 1). Table 1: Brexit: pros and cons (Kramer, 2016, 14-15) Factors Arguments for Britain leaving the European Union (Leavers) Arguments against Britain leaving the EU (Remainers) The costs of EU membership Britain pays 13 billion pounds (annually). Britain receives back 4.5 billion pounds. Trade Britain could have access to the single market without being bound by EU law. British Gross Domestic Product (GDP) might fall only slightly if it left the EU. Britain can maintain its own currency. Britain is one of the world’s largest economies and should negotiate a more favourable relationship with the EU. Over 50% of British exports go to the EU. No tariffs are imposed on trade between member countries. Britain benefits from EU trade deals with other countries. Britain may not get a favourable trade agreement with the EU. Britain’s GDP will fall. Investment Free of EU rules, Britain could return to the major financial hub in the world. International banks might leave Britain and set up their headquarters in the EU. Britain’s car industry would be less competitive if it had to pay tariffs to sell in the EU. Sovereignty Britain will not be subject to many of the rules of the various bodies in the Britain could renegotiate some the rules applied by the EU. For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 3 of 18 9/17/2020, 11:15 AM EU. Immigration Britons can restrict the number of immigrants from EU member countries, especially from Eastern and Southern Europe. Many Britons have benefited from moving to EU countries for work or retirement. Britain will lose many of its links with Europe. As Table 1 suggests, the arguments against Brexit emphasised the significance of economic issues. It was predicted that Brexit would reduce UK's real per-capita income in the medium and long-term (Sampson, 2017). Moreover, it was speculated that British companies would become less competitive in global markets. Brexit would also reduce immigration from European Economic Area countries to the UK, thus posing challenges for UK higher education and academic research in particular. Overall, many of the arguments supporting the Remain option emphasised the potential of the EU co-operation and warned about the economic risks of the Brexit. The Leave side drew on opposite arguments. It was believed that in terms of economy, the benefits from Brexit will outweigh the costs of membership. The UK could be brought back as a self-determining democratic state, free from EU regulations. Brexit would also enable curbing immigration to the UK. In the referendum, 51.9% voted in favour of leaving the EU, and 48.1% voted in favour of remaining a member of the EU. The choice made by voters caused a ‘political earthquake’, giving rise to the Brexit process (Wincott et al., 2017, pp. 429-430). Researchers have provided different explanations for the result of the referendum. For example, Hopkin (2017) contends that the vote for Brexit was not an isolated event, but part of a wave of populist, anti-elite revolts: a new ‘anti-system’ politics Western democracies are experiencing. Failed policy consensus, a rise in inequality and a decline in the representativeness of political elites, rather than a resurgence of intolerance or xenophobia, were the principal causes of the Brexit vote. The role of social media in referendum debates The Brexit vote was preceded by the 2014 Scottish interdependence referendum, a political process affecting the Brexit debates. Baxter and Marcella (2017) interviewed fifty-four participants as they searched for and used information on the websites and social media sites of the Scottish referendum campaign groups. An attempt was made to identify how the participants value facts, what they perceive as authoritative voices, and how they assess the capacity to compare campaign messages by focusing on infographics and concise, direct information. The findings indicate that the participants preferred expert messages; however, they were uncertain about their personal capacity to evaluate information they will use to make decisions. Most of the interviewees who talked about social media as a source of information about the referendum reported positive use: ‘makes it easy to engage in conversations ... it does make for better engagement’ (Baxter and Marcella, 2017, p. 543). On the other hand, respondents also expressed criticism towards social media generally, citing the ‘nastiness’ of social media discourse, as well as its superficiality. The ways in which the issues of Brexit have been debated in social media have been examined by communication scientists in particular. Most of these studies concentrate on the use of Twitter and Facebook, while so far there are no investigations examining the role of online discussion groups. Bastos and Mercea (2018) mapped the political value space of users tweeting the Brexit referendum on to parliamentary constituencies. The study revealed a significant incidence of nationalist sentiments and economic views expressed on Twitter. Although nationalism appeared to have been a critical marker of the Brexit value space, populist messages, however, were decidedly of lesser importance compared with the sheer volume of tweets discussing the economic consequences and opportunities of Britain leaving the EU. To map the social dynamics of the Brexit debate on Facebook, Del Vicario and associates (2017) performed a massive analysis on more than one million users interacting with Brexit related posts. The For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 4 of 18 9/17/2020, 11:15 AM findings revealed the existence of two distinct communities of news outlets. These communities are polarised and represent different echo chambers where the interaction with like-minded people, either for or against Brexit, tend to reinforce polarization. Lilleker and Bonacci (2017) examined Facebook pages of four organizations: the two official Campaigns, Leave EU and Stronger In, as well as two unofficial but reasonably large competitors, Let’s Stay in Europe (Let’s Stay In) and Vote Leave. The findings indicate that the Leave campaigners were proactive posters, creating more engaging content and, in turn, gaining an advantage in terms of visibility online. Leave supporters were also more prone to act as cheerleaders for the campaign applauding attacks on Remain leaders. Remain subscribers similarly endorsed negative messages but were keener to debate the detail behind slogans and critique the official campaign strategy and messaging. More recently, Bossetta et al. (2018) explored political participation on Facebook during a period of eighteen months surrounding the Brexit referendum. The study focused on the commenting activity of nearly two million Facebook users engaging with political news from British media or with the posts of referendum campaigns. The findings suggest a positive correlation between political interest and online participation on Facebook. On the other hand, the majority of users (70%) contributed only one comment to the campaigns. Conceptual framework As this study is mainly interested in the nature of oppositional dialogue, Toulmin’s (2003) model for argument patterns was chosen as point of departure. The model dates back to the 1950s when Toulmin developed a schema for the rational assessment of practical arguments presented in everyday dialogues. His model has been used to examine argumentation in diverse contexts, including online learning environments (Clark et al., 2007) and online discussion occurring in Question and Answers sites (Savolainen, 2012). Toulmin (2003, pp. 87-100) specified six major elements of argumentation; the illustrating examples of the Brexit issues draw on the empirical data of the present study. Claim: The conclusion whose merits an arguer seeks to establish; an assertion or proposition an arguer wants another to accept (e.g., ‘The annual household income will decrease substantially if the UK leaves the European Union’). Data: The facts an arguer appeals to as a foundation for the claim (e.g., ‘The UK Treasury has projected that every household will lose annually £4,300 if Britain leaves the EU’). Warrant: The statement legitimizing the claim by showing the data to be relevant (e.g., ‘The data available from the annual household income in the UK is based on the official statistics covering the years 2000-2017’). Backing: Gives additional support to the warrant when it is not convincing enough to the participants of discussion (e.g., ‘The household income statistics in the UK are collected consistently over time by the government agencies’). Qualifier: Indicates the strength of the leap from the data to the warrant and may limit how universally the claim applies (e.g., ‘It is highly evident that UK statistics of household income are reliable’). Rebuttal: Statements recognizing the restrictions to which the claim may legitimately be applied. Thus, rebuttal admits to those circumstances or situations where the claim would not hold. Usually, rebuttals include attacks on the data used to bolster a claim or attacks directly on a claim (e.g., ‘The estimation of annual loss of £4,300 per household is based on faulty calculations because they have conflated GDP and income’). Ideally, argumentation moves from the data (evidence) to the claim (conclusion) based on the reasoning provided by the warrant. A backing and qualifier may reinforce the warrant, while a rebuttal shows objections to the claim. Overall, the strength of Toulmin's model resides in its ability to evaluate arguments in an analytical manner. On the other hand, researchers have faced problems while applying Toulmin’s model in empirical For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 5 of 18 9/17/2020, 11:15 AM research (Clark et al., 2007). It is often difficult to make objective distinctions between the elements of data, warrant, and backing when analysing argumentation, resulting in poor reliability. To avoid this problem, Erduran et al., 2005) collapsed the elements of data, warrant, and backing into a single category of grounds. The present study follows this methodological idea by employing the composite category of grounds which also incorporates the element of qualifier. Further, drawing on the ideas of JimenezAleixandre et al. (2000) and Clark and Sampson (2007), Toulmin’s model was elaborated by adding two new elements, that is, counterclaim and support. This is because the participants of an argumentative discussion may not only rebut claims. They can also present counterclaims indicating disagreement with a claim by contending, for example, that ‘Brexit will not decrease the average annual household income’. The participants may also indicate support by agreeing with a claim, counterclaim, or rebuttal presented in the discussion. In addition, the present study made use of two additional categories, that is, question and comment. The former refers to a specifying request presented by a participant of discussion, for example, ‘what exactly did you mean by average annual household income?’ The latter refers to a non-evaluative statement offering an answer to a question, for example, ‘I meant the average income calculated by the Office for National Statistics’. The construct of grounds was specified further by drawing on the study conducted by Savolainen (2012). Grounds stand for sources of evidence bolstering claims, counterclaims, rebuttals, comments and indications of support. Two main types of grounds (sources of evidence) were identified. First, the elements of argumentation may be bolstered by drawing on facts. In general, a, fact can be understood as a piece of information presented as having objective reality; in this regard, a fact is something that can be checked and backed up with evidence (for example, ‘in 2014-2015, according to the Office of National Statistics, mean annual household income in the UK was ₤31,440’). Secondly, the elements of argumentation can be bolstered by drawing on personal opinion. It indicates an individual’s view on an issue at hand, based on his or beliefs, values and experiences. In contrast to a fact, a personal opinion is not based on evidence whose truthfulness of untruthfulness can be checked (for example, ‘Brexit will ruin the UK for decades’). Finally, the conceptual framework was elaborated by specifying the ways in which personal opinions and facts can be justified as sources of evidence. To this end, the present investigation drew on the framework of cognitive mechanisms constitutive of information use (Zhang et al., 2008). Mechanisms of this kind include, for example, comparison,explanation and generalization that people employ while interpreting the relevance of information available in diverse sources. Savolainen (2009) elaborated these categories in a study focusing on how prospective homebuyers assess the relevance of information needed in the decision-making. Due to their generic nature, such mechanisms also appeared to be relevant as ways used to justify personal opinion or facts about the Brexit issues. As a result, the following categories were used to indicate the ways in which the grounds were justified in argumentation about the Brexit. Comparison by differentiation. An entity is characterized by an individual attribute by pointing out that the entity is different to another entity (e.g., ‘The number of illegal immigrants living in France is higher than in the UK’). Comparison by similarity. An entity is characterized by an individual attribute by pointing out that the entity is similar to another entity (e.g., ‘France and Germany, similar to the UK share the view that more attempts are needed to curb illegal immigration’). Description. Characterizing an entity by depicting its attributes (e.g., ‘In 2016, the UK government paid £13.1 billion to the EU budget’). Explanation. The entity is characterized by an individual attribute that is perceived as causal because it is seen as a factor capable of producing positive or negative consequences for actors in the future (e.g., ‘If the UK leaves the EU, other EU countries have to reduce the EU budget by the volume of British payments’). Generalization Presenting a summary view of the attribute(s) of an entity (e.g., ‘Most EU countries support the initiatives presented by the UK government’). Positive evaluation of an entity, based on one’s beliefs or actual experiences (e.g., ‘The establishment of the Schengen area has rendered it easier to travel within the EU countries’). Negative evaluation of an entity, based on one’s beliefs or actual experiences (e.g., ‘The membership in the EU has decreased the sovereignty of political decision-making in the UK‘). For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 6 of 18 9/17/2020, 11:15 AM Reference to an external source of information (e.g., a video clip available on Youtube). Building on the categories defined above, the conceptual framework of the present study is presented in Figure 1. Figure 1: The conceptual framework Figure 1 suggests that debates occurring in online discussion groups are constituted by six major elements of argumentation: claim, question, comment, support, counterclaim and rebuttal. A discussion thread can incorporate one or fewer “chains” of argumentation constituted by these elements. A claim initiating argumentation about a topic is usually presented in the initial message of the discussion thread. Sometimes, however, the claim is presented in a later message because the initial post may simply introduce the topic or present a general-level question without a specific claim (for example, ‘Not really fully into politics, but I have been reading about the whole EU do we leave or stay, what really is for the best and why?’). The chain of argumentation begins when one of the participants presents a claim about an issue, potentially giving rise to specifying questions and comments from other participants. Depending on the nature of the claim, subsequent messages can also incorporate other elements of argumentation such as indication of support, counterclaim and rebuttal (or a combination of these elements). The present study concentrates on the examination of the relationships between claims and rebuttals constitutive of oppositional argumentation. The main emphasis will be laid on the ways in which rebutting arguments are grounded by personal opinion or facts and how such grounds are justified. However, to put the oppositional argumentation in a broader context, a descriptive quantitative analysis will be made to find out how frequently diverse elements of argumentation appear in Brexit debates. Research questions Drawing on the above framework, the study addresses the following research questions: RQ1. How are the elements of argumentation distributed in online discussion about the Brexit? RQ2. How are oppositional arguments presented as rebuttals grounded by drawing on personal opinions and factual evidence? RQ3. How are the grounds for rebuttals justified in online debates about the Brexit? For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 7 of 18 9/17/2020, 11:15 AM The answer to the first research questions provides an indicative (rough) quantitative overview of the nature of argumentation about Brexit issues, while the second research question probes into the nature of evidence used to bolster the rebuttals. Finally, response to the third research question specifies how personal opinions and facts are justified as evidence in Brexit debates. To sharpen the focus of the study, a few limitations were necessary. First, no attention is devoted to the relationships between counterclaims and rebuttals in the qualitative analysis of this study does not examine the nature of affective elements of argumentation. Given the space restrictions alone, it is evident that the above issues would have required a separate study. Empirical data and analysis The empirical data were gathered from PoliticsForum - an established online platform providing room for debate about UK politics and current affairs. The data were collected in May 2018 by downloading a sample of the forty most recent discussion threads initiated before the Brexit referendum. This sample appeared to be sufficient for the needs of the study because it enabled an indicative quantitative picture of the elements of argumentation and allowed a detailed qualitative analysis of the oppositional argumentation. Threads containing fewer than ten messages were excluded from the sample because the preliminary reading of the posts revealed that short threads fail to incorporate a sufficient number of elements constitutive of full-fledged oppositional argumentation. Moreover, threads with more than 100 messages were excluded because it appeared that long threads would not provide added value to the empirical analysis of the ways in which oppositional arguments were justified. In long threads such as these, the level of discussion was often lowered because the participants repeated their arguments or detracted from the original topic. The sample of forty threads contained altogether 1563 messages posted within the period of 14 April -23 June 2016. During this period, there were altogether 107 Brexit-related discussion threads in PoliticsForum; thus, the sample contained 37.4% of the threads. In the sample, the number of messages per thread varied from 10 to 98. Altogether seventy-five individual participants contributed to the above threads. There was a handful of really active participants; the most active of them posted no fewer than 143 messages. On the other hand, 39% of the participants were occasional contributors submitting one or two messages. In coding the data, text portions, that is, sentences or text paragraphs focusing on a Brexit-related issue such as the cost of EU membership was used as the coding unit. The relevant parts of the messages were coded by making use of the categories specified in Figure 1 above. First, a claim presented by the thread initiator was coded. If he or she presented multiple claims on diverse issues, only the claim presented first was coded; other claims were simply ignored. In most threads, several claims were presented by diverse participants. In these cases, each additional claim on a different topic initiated a sub-thread potentially incorporating other elements of argumentation. Secondly, a claim was examined to determine whether it was grounded by personal opinion or fact (or both) and whether the ground was justified in some way, for example, by drawing on explanation. If neither personal opinion nor fact was explicitly offered as an evidence, the ground was coded as empty. The coding was continued by examining the subsequent messages to identify whether they incorporate specifying questions, comments, indications of support, counterclaims and rebuttals dealing with the first claim coded for the analysis. A code was assigned to an element (for example, rebuttal) when it occurred for the first time within a message; other instances of the same element, for example, restatement of a rebuttal within the same message, were simply ignored. To strengthen the validity of the coding, I checked the initial coding iteratively. Because the study does not aim at statistically representative generalization of online forums debating political issues, the requirement of the consensus on coding decisions based on inter-rater reliability can be compromised without endangering the reliability of the exploratory study. According to Miles and Huberman (1994, p. 64), check‐coding the same data is useful for the lone researcher, provided that code–recode consistencies are at least 90%. Following this idea, check‐coding was repeated, and the initial coding was carefully For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 8 of 18 9/17/2020, 11:15 AM refined. Check‐coding revealed a few boundary cases regarding the categories of counterclaim and rebuttal. These cases were resolved by scrutinizing the content of the message in the context of the thread or sub-thread. The refining of the coding was continued until there were no anomalies. To answer the first research question dealing with the quantitative distribution of the elements of argumentation, the data were scrutinized by means of descriptive statistics. More importantly, to answer research questions 2 and 3 focusing on the grounding and justification of rebuttals, qualitative content analysis was conducted. More specifically, the constant comparative method (Lincoln and Guba, 1985) was used to capture the variety of articulations constitutive of rebutting arguments, as well as the ways in which personal opinions and facts were presented as sources of evidence. However, the focus was placed on scrutiny of the ways in which the evidence for rebuttals is justified in the oppositional argumentation. Because the contributors to the PoliticsForum are expected to be aware of the fact that their messages will become publicly available on this platform, no attempts were made to contact the participants to obtain permission for the use of their messages in the present study. Asking permission would have been difficult in practice because many of the participants appeared to be occasional contributors: it is unlikely that they are motivated in answering for requests such as these. However, when using the illustrative extracts taken from the messages, the anonymity of the participants is carefully protected. Their nicknames are replaced by neutral identifiers such as Participant 1 and Participant 2, while an individual thread is referred to as Thread 24, for example. Given the high number of discussion threads focusing on the issues of Brexit, it is unlikely that such extracts could be associated with an individual contributor. Findings The elements of argumentation: a quantitative overview In the forty threads, altogether 366 claims, that is, on average nine claims per thread were presented. The number of claims per thread varied between one and thirty-two Table 2 provides a quantitative overview of the elements constitutive of Brexit discussions occurring in the PoliticsForum. The percentage distribution was calculated from the frequency of codes (n = 2056) assigned to elements of argumentation. Table 2: Percentage distribution of the elements of argumentation about Brexit issues (n=2056) Category Percentage Comment 42.6 Claim 17.8 Question 14.1 Rebuttal 12.6 Counterclaim 7.7 Support 5.2 Total 100.0 Comment was the most frequent element of argumentation, followed by claims and questions. Rebuttals occupied 12.6% of the codes assigned to the messages, while the share of counterclaims remained somewhat lower, that is, 7.7.%. Indications of support were seldom presented. In most cases, the elements of argumentation were grounded by drawing on personal opinion; no less than 93.7% of the codes assigned to the messages belonged to this category. Thus, the share of facts as source of evidence remained fairly low, that is, 6.3%. This suggests that the Brexit debates occurring in the PoliticsForum are dominated by the description of personal opinions while fact-based evidence is For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 9 of 18 9/17/2020, 11:15 AM Because the present study examined argumentation focused on a politically-sensitive topic occurring in as single online platform, caution should be taken in generalising these results to other online discussion fora or social media sites. Moreover, due to space reasons, the qualitative analysis was confined to the scrutiny of one rebuttal per way of justification although online debates may incorporate a series of rebuttals. There is a need to elaborate these issues in future studies on online argumentation. Moreover, the study of online argumentation may be elaborated by making use of alternative research approaches. This is reasonable because one of the limitations of Toulmin's (2003) model is that it takes a somewhat schematic approach to the specification of the elements of argument, as well as their relationships. For example, Toulmin's model does not draw attention to the complexities of rhetorical situations in which argumentation takes places (Crosswhite, 2008). To examine these issues, the ideas of rhetoric could be used in the analysis of the argumentation process (Tindale, 2004). Intriguing questions include, for example, what kind of rhetorical devices and strategies are used in the defence of counterclaims and rebuttals in politically sensitive discussions? Relevant topics of further research also include the analysis of the features of successful versus unsuccessful argument strategies. Finally, the above questions could also be addressed in comparative studies examining the ways in which argumentation is structured on discussion groups and other social media forums, for example, blogs. Acknowledgements The constructive comments of anonymous reviewers are gratefully acknowledged. About the author Reijo Savolainen is Professor Emeritus at the Faculty of Information Technology and Communication Sciences, Tampere University, Kanslerinrinne 1, FIN-33014 Tampere, Finland. He received his PhD from University of Tampere in 1989. His main research interests are in theoretical and empirical issues of everyday information practices. He can be contacted at [email protected] References Note: A link from the title is to an open access document. A link from the DOI is to the publisher's page for the document. Bastos, M. &, Mercea, D. (2018). Parametrizing Brexit: mapping Twitter political space to parliamentary constituencies. 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Understanding the sustained use of online health communities from a selfdetermination perspective. Journal of the Association for Information Science and Technology, 67(12), 2842-2857. https://doi.org/10.1002/asi.23560 How to cite this paper Savolainen, R. (2020). For or against Brexit? Justifying oppositional arguments in online discussion. Information Research, 25(3), paper 864. http://InformationR.net/ir/25-3/paper864.html (Archived by the Internet Archive at https://bit.ly/3lrfiwy) Find other papers on this subject Check for citations, using Google Scholar © the author, 2020. Last updated: 22 June, 2020 Contents | Author index | Subject index | Search | Home Facebook Twitter LinkedIn More For or against Brexit? Justifying oppositional arguments in online discu... http://informationr.net/ir/25-3/paper864.html 18 of 18 9/17/2020, 11:15 AM