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As aging populations put pressure on pension systems worldwide, pension reforms have dominated the (political) agenda in many countries for years. The media are essential information providers on such hotly debated issues. By selecting and highlighting certain aspects of an issue and glossing over others, also known as framing, news media can propagate a particular interpretation of the issue to the public. This study therefore approaches pension reform from the perspective of the media by examining how news frames of pension reform (i.e. responsibility frame and justice frame) influence how citizens perceive and respond to pension reform. Findings of an online survey-embedded experiment (N  = 762) show that citizens who encountered a news frame that emphasized individual or collective responsibility for pensions showed a stronger preference for this type of responsibility; however, this effect was only positive if news media also framed individual or collective responsibility for pensions as just. In fact, exposure to an unjust frame leads to more negative attitudes toward the specific form of responsibility. Regarding individual differences, lower-educated people are more strongly impacted by the responsibility frame than higher-educated people. The strength of framing effects did not differ among citizens of different ages or levels of solidarity, nor between citizens who received the frames via their primary mode of news use and the ones exposed to a less preferred mode of news use. This study shows the importance of news framing in shaping citizens' attitudes toward pension reforms, suggesting that media coverage matters in the public debate on pensions. [ABSTRACT FROM AUTHOR]

In public debates, climate change communication tends to polarize into communities for and against the scientific basis of global warming. We analyze mention networks on Twitter around the publication of the Fifth Assessment Report (AR5) of the Inter-governmental Panel on Climate Change (IPCC) Working Group 2 and 3 reports that were published in March–April 2014. Building upon earlier research into climate skepticism and polarization of climate change debate, we focus on the relative prominence of different types of Twitter user accounts, in terms of engagement with other users and their alignments towards the scientific basis of climate change. We distinguish a "heart" actively discussing IPCC from a "shadow", which more anecdotally mentions IPCC and is likely to correspond to the remainder of a public space minimally interested in IPCC-related reports. We develop an original network analysis framework that enables us to analyze and deconstruct the inner structure of this heart's strongly intertwined engagement dynamics. Interesting observations relate to the position of critical users, who are in the minority, but are in relative terms most engaged with and most engaging with other users in this arena, while the media, casual users and governmental agencies occupy relatively less prominent positions. We further qualify the various structural positions by demonstrating that they correspond to different types of vocabulary specific to user types and positions. This socio-semantic approach may be generally helpful to disentangle semantic and structural polarization in online conversation spaces where opposing poles precisely appear to be mixing. • Users critical of anthropogenic climate change hold a prominent position on Twitter. • They dominate a heart of users discussing IPCC reports despite being in minority. • Their vocabulary distinctly relies on scientific rather than political terms. • Media, individuals and governmental organizations are less prominent in the debate. • The heart exhibits a socio-semantic hierarchy intertwining terms and positions. [ABSTRACT FROM AUTHOR]

Social media are increasingly important in the news menu of media users. Differences in news production processes between traditional and social media may lead to differences in how political and social issues are depicted, and this may, eventually, have consequences for the information that reaches citizens about an issue. Against this background, this study compares content across the two media types to examine whether and how the framing of a sociopolitical issue differs between newspaper articles and posts on social media. The empirical analyses are based on a content analysis of newspaper articles (n = 414) and social media messages (n = 2,771) conducted in the context of the socially contested issue of raising the retirement age in the Netherlands. Findings suggest that different content production processes can still lead to similar outcomes as both media types emphasize problems with (instead of solutions to) the retirement age issue. Our findings also confirm differences across traditional and social media, although these differences are substantially relatively small. While traditional news media emphasize conflict-related frames more often than social media, social media present more frame diversity in solutions. [ABSTRACT FROM AUTHOR]

Diversity of represented viewpoints in media content is a vital aspect of democratic societies. Building on insights about content diversity between topics, this study assesses frame and actor diversity within an issue and across media platforms. We conducted a manual quantitative content analysis of frames and actors in Dutch Twitter posts (N = 2,224) and newspaper articles (N = 318) about the banned pesticide fipronil, and we compared categorical and relative diversity of frames and actors between platforms. The results revealed an overall higher diversity for newspaper articles compared with tweets. Most strikingly, the diversity dynamics were quite similar in newspaper content and Twitter messages, but this similarity vanished once we distinguished between diagnostic and prognostic actor and frame diversity, with news articles showing a greater focus on solutions. The proposed diversity measures help discern temporal stages within issues and contribute to our understanding of intraissue dynamics across media platforms. [ABSTRACT FROM AUTHOR]

Social media platforms provide major opportunities for online activism and the emergence of digital counterpublics. Research on counterpublics has focused on actors and their narrative strategies aiming at deconstructing dominant discourses. Less attention has been paid to how the interplay between actors and platform-specific functions affects the configurations and therewith also the success of digital counterpublics. Existing studies mainly rely on determining up front which topics, actor characteristics, or arguments constitute hashtag activism and digital counterpublics. In contrast, our approach allows for an empirical identification based on how actors position themselves in an online debate toward other actors and their shared hashtags. We argue that online activism is co-constituted by actors and their usage of hashtags, actor mentions, and retweets. Applying a communicative network perspective allows for the integration of semantic and relational research traditions. We combine a recently developed automated network analysis method and content analysis to analyze two Twitter debates about animal welfare issues. Our results show that among Twitter users, citizens and environmental organizations formed a common cluster whereas media actors formed their own sub-clusters in both debates. The findings emphasize the central role of citizens for the configuration of digital counterpublics. The proposed approach can be further adapted and applied more widely for the analysis of online activism and debates. [ABSTRACT FROM AUTHOR]

Social media data provide increasing opportunities for the automated analysis of large sets of textual documents. So far, automated tools have been developed either to account for the social networks among participants in the debates, or to analyze the content of these debates. Less attention has been paid to mapping co‐occurrences of actors (participants) and topics (content) in online debates that can be considered as socio‐semantic networks. We propose a new, automated approach that uses the whole matrix of co‐addressed topics and actors for understanding and visualizing online debates. We show the advantages of the new approach with the analysis of two data sets: first, a large set of English‐language Twitter messages at the Rio + 20 meeting, in June 2012 (72,077 tweets), and second, a smaller data set of Dutch‐language Twitter messages on bird flu related to poultry farming in 2015–2017 (2,139 tweets). We discuss the theoretical, methodological, and substantive implications of our approach, also for the analysis of other social media data. [ABSTRACT FROM AUTHOR]

Recently, the field of strategic communication has been criticized for lacking a coherent theoretical synthesis. Recognizing that strategic communication is a sub-discipline of communication science, we study how the field is anchored in the corpus of established communication theories – including social science, interpretative, and critical approaches. To describe the use, development, and context of communication theories in strategic communication publications, we analyzed all articles published in ten public relations/ corporate communication/ organizational communication/ strategic communication journals over twenty years (N = 4,027). While the vast majority of articles did not refer to one of the 91 communication theories, the share of references to these theories has been increasing. Overall, we found a high diversity of approaches – with considerable differences among journals – indicating a broad discourse. However, we also found a growing relevance of the social science paradigm. We argue that a stronger focus on communication theories may facilitate a consilient synthesis and increase the relevance of the field, academically and practically. We therefore propose to strengthen the communication science perspective in strategic communication. [ABSTRACT FROM AUTHOR]

Highlights • Issue arenas can be studied as communication networks in which topics are discussed. • We automatically map stakeholders and the topics in an issue arena on Twitter. • We analyzed 704 Twitter messages on bird flu in poultry. • Our approach can assist in issue monitoring and stakeholder detection. Abstract Issue arenas, as places for societal discussions, have recently been studied as an important aspect of organizational environments. While a fundamental part of any issue arena is the distinction between active and passive actors, empirical analyses have mainly focused on active stakeholders. We approach issue arenas as communication networks in which active stakeholders discuss topics and involve passive stakeholders. Based on network theory, we introduce an automated method for mapping these issue arenas on Twitter. In particular, we combine manual coding of active stakeholders, and automated semantic network analysis of addressed, passive stakeholders and their topics of discussion. Empirically, we focus on the issue of bird flu affecting poultry farming in the Netherlands from 2015 to 2017 with a sample of 704 Twitter messages. Instead of pre-defining a set of stakeholders for the analysis, our approach to study communication networks in online settings allows for mapping issue arenas based on the stakeholders that communicate about the topic. [ABSTRACT FROM AUTHOR]

This study investigates intermedia agenda-setting dynamics between traditional news media and social media in a policy reform debate. Whereas the role of traditional news media in public debates is generally acknowledged, the growth of social media raises questions about its potential power to set the agenda. This study contributes to the intermedia agenda-setting literature by extending the theory to the social media context, aiming to unravel causal relationships between traditional and social media. We use an automated content analysis to examine traditional and social media coverage between 2009 and 2016 of the Dutch policy reform to raise the retirement age. Results of pooled fixed effects time series models show support for a mutual influence between the traditional and social media agendas. By looking at the effects per subissue, monthly level vector autoregression models provide more empirical support for the influence of traditional news media on social media than for the reverse. [ABSTRACT FROM AUTHOR]

Over the past decade, scientists and journalists have prominently utilized the metaphor of a tipping point for drastic, irreversible and dangerous climate change. This paper shows how the tipping point metaphor became a multi-purpose bridge between science and the news media, describing how its meaning and use developed and diversified in interaction between these two domains. Within the scientific domain, the metaphor developed from a rhetorical device conveying a warning of drastic, irreversible and dangerous climate change to a theoretical concept driving empirical research. The news media soon picked up the tipping point metaphor for abrupt and dangerous climate change, turning it into a common part of the journalistic lexicon. Moreover, both science and the news media developed another, societal use of the tipping point metaphor, calling for radical societal change to avoid climate change catastrophe. The tipping point metaphor is hence not a monolithic notion but a highly versatile concept and expression, allowing it to be used for various communicative purposes by distinct stakeholders in different contexts. [ABSTRACT FROM AUTHOR]

Climate change as a complex physical and social issue has gained increasing attention in the natural as well as the social sciences. Climate change research has become more interdisciplinary and even transdisciplinary as a typical Mode-2 science that is also dependent on an application context for its further development. We propose to approach interdisciplinarity as a co-construction of the knowledge base in the reference patterns and the programmatic focus in the editorials in the core journal of the climate-change sciences- C limatic C hange-during the period 1977-2013. First, we analyze the knowledge base of the journal and map journal-journal relations on the basis of the references in the articles. Second, we follow the development of the programmatic focus by analyzing the semantics in the editorials. We argue that interdisciplinarity is a result of the co-construction between different agendas: The selection of publications into the knowledge base of the journal, and the adjustment of the programmatic focus to the political context in the editorials. Our results show a widening of the knowledge base from referencing the multidisciplinary journals N ature and S cience to citing journals from specialist fields. The programmatic focus follows policy-oriented issues and incorporates public metaphors. [ABSTRACT FROM AUTHOR]

Purpose – The purpose of this paper is to present a study about gender differences in the climate change communication on Twitter and in the use of affordances on Twitter. Design/methodology/approach – The data set consists of about 250,000 tweets and retweets for which the authors’ gender was identified. While content of tweets and hashtags used were analysed for common topics and specific contexts, the usernames that were proportionately more frequently mentioned by either male or female tweeters were coded according to the usernames’ stance in the climate change debate into convinced (that climate change is caused by humans), sceptics, neutrals and unclear groups, and according to the type or role of the user account (e.g. campaign, organization, private person). Findings – The results indicate that overall male and female tweeters use very similar language in their tweets, but clear differences were observed in the use of hashtags and usernames, with female tweeters mentioning significantly more campaigns and organizations with a convinced attitude towards anthropogenic impact on climate change, while male tweeters mention significantly more private persons and usernames with a sceptical stance. The differences were even greater when retweets and duplicate tweets by the same author were removed from the data, indicating how retweeting can significantly influence the results. Practical implications – On a theoretical level the results increase the understanding for how women and men view and engage with climate change. This has practical implications for organizations interested in developing communication strategies for reaching and engaging female and male audiences on Twitter. While female tweeters can be targeted via local campaigns and news media, male tweeters seem to follow more political and scientific information. The results from the present research also showed that more research about the meaning of retweeting is needed, as the authors have shown how retweets can have a significant impact on the results. Originality/value – The findings contribute towards increased understanding of both gender differences in the climate change debate and in social media use in general. Beyond that this research showed how retweeting may have a significant impact on research where tweets are used as a data source. [ABSTRACT FROM AUTHOR]

Purpose – Research into the emergence of a hype requires a mixed methods approach that takes into account both the evolution over time and mutual influences across different types of media. The purpose of this paper is to present a methodological approach to detect an emerging hype in online communications. Design/methodology/approach – The paper combines Auto Regressive Integrated Moving Average (ARIMA) time series modelling and semantic co-word networks, and this combination of methods provides a view on the emergence and development of a hype at the level of mutual influences across a heterogeneous set of newspaper and blog data. The subject scope of the paper is the climategate hype. The climategate hype was triggered by the online publication of a set of hacked e-mails belonging to climate researchers at the East Anglia University in November 2009. Findings – The main findings show that the climategate hype was initiated in the blogs, and the newspapers were reacting to the blogs. At the level of semantics, the blogs and the newspapers framed the issue from opposite perspectives. Research limitations/implications – The combination of methods contributes theoretical insights to how blogs interact with more traditional media on hype generation and methodological insights to internet researchers investigating emergent online hypes. The method calls for further validation. Practical implications – Investigating the emergence and evolution of a hype, and the interaction of the two media is relevant for journalists in becoming more reflexive in their practices and the cues from the outside world. Originality/value – The paper is novel in its combination of the two specific methods, ARIMA time series modelling and co-word networks and its attempt to identify the media origins of a hype, and especially the interaction between blogs and newspapers. [ABSTRACT FROM AUTHOR]

An introduction is presented in which the editor discusses various reports within the issue on topics including climate skepticism, English-language blogosphere on climate change, and online debates around climate change.

The recent financial crisis has been covered in newspapers with metaphors such as toxic assets and toxic loans. Although these groups of related metaphors (i.e., metaphor families) may strengthen the intended images on the topic under discussion, they have been only seldom studied in metaphor research. This article investigates the ways in which metaphor families fulfill a translator role for emerging terminology in financial discourses. We explore the expansion and evolution of the toxic metaphor family, revealing subtle changes of metaphor use in three newspapers over time. Our results show a transition from generic image-creating metaphors toward financial-instrument-targeted metaphors. Overall, the evidence brought by this study is a stepping-stone for further research on metaphor families. [ABSTRACT FROM AUTHOR]

Climate change and imagined futures are intricately linked, discussed by policy-makers and reported in the media. In this article we focus on the construction of future expectations in the press coverage of the 1992 and 2012 United Nations conferences in Rio de Janeiro in British and Dutch national newspapers. We use a novel combination of methods, semantic co-word networks and metaphor analysis, to study imagined futures. Our findings show that between 1992 and 2012 there was an overall shift from future-oriented hope to past-oriented disappointment regarding implementing international agreements on climate change policy, but with subtle and interesting differences between the UK and The Netherlands. Certain national differences seem to be stable over time and are indicative of rather dissimilar policy cultures in two nations which are geographically quite close. [ABSTRACT FROM PUBLISHER]

This paper offers a framework for examining the relationship between social, instrumental, and technological determinants of participation through social media (Dahlberg, 2004) using a discursive approach based in the concepts of frames and framing (Goffman, 1974; Snow & Benford, 1992). We apply our multideterminant framework to investigate participatory dynamics on YouTube in the case of climategate. Our interpretive analysis of videos and comments shows how public responses to climategate were scripted around 3 dominant master frames, reinforced by calls to collective action and media form. Our multideterminant framework makes a contribution to the debate over the transformative potential of social media by providing a method to assess the relative value of social media in response to specific social problems. [ABSTRACT FROM AUTHOR]

In September 2013 the Intergovernmental Panel on Climate Change published its Working Group 1 report, the first comprehensive assessment of physical climate science in six years, constituting a critical event in the societal debate about climate change. This paper analyses the nature of this debate in one public forum: Twitter. Using statistical methods, tweets were analyzed to discover the hashtags used when people tweeted about the IPCC report, and how Twitter users formed communities around their conversational connections. In short, the paper presents the topics and tweeters at this particular moment in the climate debate. The most used hashtags related to themes of science, geographical location and social issues connected to climate change. Particularly noteworthy were tweets connected to Australian politics, US politics, geoengineering and fracking. Three communities of Twitter users were identified. Researcher coding of Twitter users showed how these varied according to geographical location and whether users were supportive, unsupportive or neutral in their tweets about the IPCC. Overall, users were most likely to converse with users holding similar views. However, qualitative analysis suggested the emergence of a community of Twitter users, predominantly based in the UK, where greater interaction between contrasting views took place. This analysis also illustrated the presence of a campaign by the non-governmental organization Avaaz, aimed at increasing media coverage of the IPCC report. [ABSTRACT FROM AUTHOR]

Changes in the biosciences and their relations to society over the last decades provide a unique opportunity to examine whether or not such changes leave traces in the language we use to talk about them. In this article we examine metaphors used in English-speaking press coverage to conceptualize a new type of (interdisciplinary) bioscience: synthetic biology. Findings show that three central metaphors were used between 2008 and May 2010. They exploit social and cultural knowledge about books, computers and engines and are linked to knowledge of three revolutions in science and society (the printing, information and industrial revolutions). These three central metaphors are connected to each other through the concepts of reading/writing, designing and mass production and they focus on science as a revolutionary process rather than on the end results or products of science. Overall, we observed the use of a complex bricolage of mixed metaphors and chains of metaphors that root synthetic biology in historical events and achievements, while at the same time extolling its promises for the future. [ABSTRACT FROM AUTHOR]

Bird flu, otherwise known as avian influenza, has attracted widespread public and global attention. The H5N1 avian influenza virus was first documented as infecting humans in Hong Kong in 1997 and many of those infected died subsequently from the virus that had been transmitted from poultry to humans. It took several years, however, before a hyped up type of public debate about bird flu began in around 2004. This article examines the hype surrounding public debates about bird flu in medical journals, newspapers and public discussion forums from 1997 to 2006. The article focuses on the development of the frequencies of published texts, and the terminology used in the three databases. The quantitative results will be accompanied by a hermeneutic interpretation of the main sub-topics within the debates. These (preliminary) results contribute to research dealing with the emergence of hypes and the spread of public debates more generally. [ABSTRACT FROM AUTHOR]

The framing of issues in the mass media plays a crucial role in the public understanding of science and technology. This article contributes to research concerned with the analysis of media frames over time by making an analytical distinction between implicit and explicit media frames, and by introducing an automated method for the analysis of implicit frames. In particular, we apply a semantic maps method to a case study on the newspaper debate about artificial sweeteners, published in the New York Times between 1980 and 2006. Our results show that the analysis of semantic changes enables us to filter out the dynamics of implicit frames, and to detect emerging metaphors in public debates. Theoretically, we discuss the relation between implicit frames in public debates and the codification of meaning and information in scientific discourses, and suggest further avenues for research interested in the automated analysis of frame changes and trends in public debates. [ABSTRACT FROM PUBLISHER]

The paper is a first effort at examining the potential of scientometrics analysis to the field of development in the expectation that this type of analysis will make general patterns of knowledge within development more visible. In particular, we assume that it will reveal information on these patterns and in particular on knowledge divergences and divides within the sector. Semantic maps make it possible to compare semantics across the three domains under study, and reveal implicit frames within them. This methodology is tested using a pilot study comparing the semantics around Millennium Development Goals (MDGs) in three domains involved in development: policy, science and the mass media. In particular, it compares the semantics on MDGs in the website of the Dutch Ministry of Foreign Affairs, in scientific articles authored by Dutch scholars, and in Dutch newspaper articles. In conclusion, the semantic maps method provided fruitful insights into comparing the semantics of the debate around MDGs in the three separate knowledge domains involved in the debate. [ABSTRACT FROM AUTHOR]

Four years after the completion of the Human Genome Project, the US National Institutes for Health launched the Human Microbiome Project on 19 December 2007. Using metaphor analysis, this article investigates reporting in English-language newspapers on advances in microbiomics from 2003 onwards, when the word “microbiome” was first used. This research was said to open up a “new frontier” and was conceived as a “second human genome project”, this time focusing on the genomes of microbes that inhabit and populate humans rather than focusing on the human genome itself. The language used by scientists and by the journalists who reported on their research employed a type of metaphorical framing that was very different from the hyperbole surrounding the decipherment of the “book of life”. Whereas during the HGP genomic successes had been mainly framed as being based on a unidirectional process of reading off information from a passive genetic or genomic entity, the language employed to discuss advances in microbiomics frames genes, genomes and life in much more active and dynamic ways. [ABSTRACT FROM AUTHOR]

This article considers temporal discrepancies within popular metaphors of science and technology as carriers of cultural experiences and knowledge over historical time. The focus is on the recent debates on the Human Genome Project, cloning, and stem-cell research. The results show that temporal discrepancies in metaphors differ between journalistic and scientific discourses. There is need for further research on metaphors as bridges across historical periods of time in certain cultural groups. [ABSTRACT FROM AUTHOR]

Internet search engines function in a present which changes continuously. The search engines update their indices regularly, overwriting webpages with newer ones, adding new pages to the index and losing older ones. Some search engines can be used to search for information on the Internet for specific periods of time. However, these `date stamps' are not determined by the first occurrence of the pages in the web, but by the last date at which a page was updated or a new page was added and the search engine's crawler updated this change in the database. This has major implications for the use of search engines in scholarly research as well as theoretical implications for the conceptions of time and temporality. This article examines the interplay between the different updating frequencies by using AltaVista and Google for searches at different moments of time. Both the retrieval of results and the structure of retrieved information erodes over time. [ABSTRACT FROM AUTHOR]

The article discusses how the metaphor of the BOOK OF LIFE was extended over time to cover the life cycle of the Human Genome Project from genetics to genomics. In particular, the focus is on the role of extendable metaphors in the debate on the Human Genome Project in three European newspapers, popular scientific journals and scientific and scholarly articles from 1990 to 2002. In these different domains of use, various parts of the metaphor were highlighted. The metaphor of BOOK OF LIFE was mainly used to justify the continuation of the gene research from gene sequencing to comparative genomics. Readily extendable metaphors, such as the BOOK OF LIFE, function as useful communicative tools both over time and across domains of use. [ABSTRACT FROM AUTHOR]

"Stem cell research" has become a subject of political discussion in recent years because of its social and ethical implications. The intellectual research program, however has a history of several decades. Therapeutic applications and patents on the basis of stem cell research became available during the 1990s. Currently, the main applications of stem cell research are found in marrow transplantation (e.g. for the treatment of leukemia). In this study, the various meanings of the term stem cell are examined in these different contexts of research, applications, and policy debates. Translation mechanisms between contexts are specified, and a quantitative indicator for the degree of codification is proposed. [ABSTRACT FROM AUTHOR]

This article examines the shifts and changes in the metaphors used to describe the human genome and the human genome project (HGP) between 2000 and 2003, with the year 2001 as a trigger for genomic and metaphorical reflection. We want to answer questions, such as: Did the findings announced in 2001 shake the metaphorical foundations on which the HGP had been built or not? Did novel metaphors capture the imagination of scientists and the public or did old metaphors survive throughout this period? What influence does the continuity or discontinuity in metaphorical framing of the HGP have on the public perception of the HOP as well as on its scientific understanding? To answer these questions we have systematically compared the metaphors used in one major scientific journal, Nature, and in one major UK newspaper, the online edition of the Guardian/The Observer during a period of two months around June 2000, February 2001 and April 2003. [ABSTRACT FROM AUTHOR]

In public discourse on the environment,scientific knowledge is often mediated by metaphors.In this article,the authors are concerned with the role of metaphors in the communication of biodiversity loss.More specifically,their examination focuses on such popular metaphors as 'the library of life,'biotic holocaust,'and 'the Holy Grail 'and on the role of these metaphors in putting biodiversity loss on the global environmental agenda.These metaphors reflect two opposite narratives on environmental politics:the apocalyptic narrative of species extinction and the new narrative of hope that looks at genetic engineering. [ABSTRACT FROM AUTHOR]

Examines the participation of life sciences companies in the debate on biotechnology. Metaphors of agricultural and medical biotechnology; Controversy regarding the advertising campaigns on biotechnology; Strategy of attaching positive images to life sciences companies.

Examines discussions of Dolly, the cloned sheep, in the periodicals 'The Times' and 'Nature' in 1997 to test the claim that metaphors such as 'clones are mass products' can be used for opposing purposes if both clones and mass products have many features in common from which to select. Ambiguity of the use of metaphors; Metaphors of cloning.

The article focuses on the use of metaphor in journalism for describing political activity. It is stated that the metaphorical approach is best seen in political caricatures, but such a metaphorical way of describing political activity is taken for granted if it is not questioned. It is stated that describing politics metaphorically in terms of a game creates a competition between parties and highlights the differences of opinion between individuals and parties.

Introduction. We assess the extent to which published media timelines reflect contemporary electronic discussions of major media events, using the London Attacks of July 2005 as a case study. The main objective is to judge whether timelines could, in principle, be automatically generated from contemporary debates. A secondary objective is to analyse the reasons for differences between contemporary debates and retrospective media timelines. Method. Our method exploits the new opportunities for large-scale analysis afforded by electronic news feeds and blogs. We compared published media timelines with blog postings and news stories related to the London attacks of July, 2005. Rich Site Summary (RSS) technology was used to gather data from 19,587 blog and news sites. For the period of July 7 to July 31 we identified an average of 275 sources a day that posted new information containing the word 'London'. These postings, a combination of blogging and news stories, formed the raw data for our analysis. In particular, we extracted and counted the individual words used in the postings. Analysis. We compared contemporary word usage statistics from our RSS data with the text of three published media timelines, particularly seeking words and types of words that were present in one but not the other. Results. We found that the timelines tended to ignore the role of communication during the event itself, to use less emotionally charged language, and to gloss over to some extent the wider context of the event. Hence some aspects (frames) of the unfolding discussion were ignored by the timelines. Moreover, all sources included a range of relatively trivial details, the timelines apparently using them as concept markers (metonymy) for broader issues. Conclusions. It seems that it would be difficult to automatically generate media timelines from contemporary discussions because of frame changes, and because of changes in terminology and the difficulty in separating highly discussed relatively insignificant details from the key facts. Nevertheless, the comparative analysis techniques reported in this paper may provide an interesting new window on contemporary discussions and media representations of major events. [ABSTRACT FROM AUTHOR]