1 Introduction
2 Impact of Social Media on Emergency and Disaster Management
2.1 Emergency and Disaster Communication on Social Media
2.2 Social Media Utilisation by EMAs During Disasters
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Large amounts of information are typically spread rapidly throughout social media communications networks during and after an extreme event which is hard to manage and as a consequence the identification as well as the analysis of trustworthy and reliable information under these conditions, is still one of the hardest challenges for emergency managers (Mirbabaie et al., 2019);
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As social media can be utilised by everyone from almost everywhere and at any time, it allows everybody to spread unverified information in any form. This leads to user-generated content that does not meet high information quality and trust standards that are expected from and by EMA (Stieglitz et al., 2018b).
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When considering the communication by EMA to the general public, an important point to consider is that extreme events come with situational uncertainty, high levels of threat as well as decision-making pressure, which all occur under time-constraints (Fraustino et al., 2012). This leads to the need for the early provision of accurate, immediate and trustworthy information, to fill the information vacuum. This kind of information provision is essential from government, experts or EMA (Fraustino et al., 2012; Stieglitz et al., 2017), but it remains challenging for the EMA to use social media for this purpose. On the one hand, EMA have to provide crucial and accurate information in quickly and ensure it reaches the right individuals and users (Hofeditz et al., 2019). On the other hand, EMA are expected to match the growing expectations of the general public, to respond directly to their call for help (Hofeditz et al., 2019; Reuter & Spielhofer, 2017). This makes it very difficult and complicated when addressing the needs and requests of very heterogeneous communities (Hofeditz et al., 2019).
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When studying C-A interaction, the problem of social media data volume is also encountered in A-C interaction dimension. Since different information publishers on social media fight for a user’s attention, EMAs face a challenge to make themselves and their valuable information visible due to increasing the prominence of their own postings (Bruns & Burgess, 2014; Ross et al., 2018).
3 Digital Nudging
A digital nudge is any intended and goal-oriented intervention element (e.g. design, information or interaction elements) in digital or blended environments attempting to influence people’s judgment, choice, or behaviour in a predictable way, that
Is made possible because of and works by making use of cognitive boundaries, biases, routines, and habits in individual and social decision-making, Works by making use of those cognitive boundaries, biases, routines, and habits as integral parts of such attempts, Preserves the full freedom of choice without forbidding or adding any rationally relevant choice options, Does not limit the choice set or making alternatives appreciably costlier in terms of time, trouble, social sanctions, and so forth, Nudgees must be able to easily recognize when and where they are subject to being nudged (type-transparency), as well as what the nudger’s goals of this intervention are, in addition to how and why the nudge is working (token-transparency) and Increases the private welfare of the nudged individual (pro-self) or the social welfare in general (pro social). (Lembcke et al., 2019).
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RQ 1: How can digital nudging be used in social media during emergency events and disasters?
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RQ 2: How can social media nudging be used in emergency and disaster communication to support emergency management agencies?
4 Methodology
4.1 Systematic Literature Review
4.2 Social Media Data Collection and Analysis
5 Findings
5.1 SLR Findings
Category | Anchor sample | Encoding rules |
---|---|---|
Emotive wording | “Avoid dissatisfaction by taking a time out here and then” | The emotions of the reader are directly or indirectly addressed |
Position of crucial information | “A construction site at an intersection can lead to failures and delays in railway operations. See here if your railroad line is affected by disturbances: www. ...” | The important message is placed at the end of a tweet or visualised in an attached media |
Score graphics | Energy saving score, donation score, … | An attached media shows data in a scale/score |
Complex/simple to process visualisations | Simple column diagrams/complex graphs with three axes | An attached media shows a data visualisation which is conspicuously simple or complex in its representation |
Monetary incentives | “If you buy this chocolate bar, one dollar will be donated to X” | A call to action is made in combination with a monetary incentive |
Relational capital/consensus | “Share this warning with you friends, they may find it helpful” | A call to action is made in combination with calling the relational capital |
“Get out of your chair! 95% of your friends already did a workout today” | ||
Cognitive capital | “Share this with your friends, let them know your interests” | A call to action is made in combination with calling the cognitive capital |
Commitment cues | “To fall in love with yourself takes time. Why don’t you start with a small challenge and give yourself a smile in the mirror every morning for 10 days?” | A call to action is made in combination with commitment cues |
Visual cues |
➔ positive rating
➔ negative rating | Commonly known and interpreted signs and colours are used to enrich the message on a visualisation |
Relevance of information | “Please leave the area! It is important to make sure you stay save and that the bomb disposal can begin in time” | Information about the relevance of something is added to the message |
Messenger effect | The author of the tweet in which the reader is called to leave the area because of a bomb disposal is staff of the local fire service | The author of a tweet is in a position with more expertise compared to the reader regarding a specific situation |
Scarcity cue | “Every day without eating fruits and vegetables is a missed chance to reach a healthier life” | Any hint of scarcity which affects the reader is added to a message |
5.2 Qualitative Social Media Data Analysis Findings
Digital nudge in social media | Total frequency of occurrence | Absolute retweet count | Average retweet frequency per tweet |
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Anchoring & adjustment | 16 | 4358 | 272 |
Striking visual | 130 | 31,649 | 244 |
Status quo bias | 5 | 1167 | 233 |
Visual cues | 40 | 7232 | 181 |
Framing | 191 | 28,409 | 149 |
Position of crucial information | 61 | 8970 | 147 |
Social norms | 12 | 1507 | 126 |
Messenger effect | 105 | 13,043 | 124 |
Simple to process visualisation | 22 | 2440 | 111 |
Emotive wording | 61 | 6562 | 108 |
No nudge | 51 | 3523 | 69 |
Monetary incentives | 4 | 217 | 54 |
Commitment cues | 3 | 136 | 45 |
Digital nudge | Agency to community (A–C) | Community to agency (C–A) | Community to community C–C | ||||||
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Total frequency of occurrence | Absolute retweet count | Average retweet frequency per tweet | Total frequency of occurrence | Absolute retweet count | Average retweet frequency per tweet | Total frequency of occurrence | Absolute retweet count | Average retweet frequency per tweet | |
Anchoring & adjustment | 16 | 4358 | 272 | ||||||
Striking visual | 9 | 1516 | 168 | 6 | 734 | 122 | 114 | 29,250 | 256 |
Status quo bias | 5 | 1167 | 233 | ||||||
Visual cues | 31 | 5199 | 168 | 1 | 411 | 411 | 8 | 1622 | 203 |
Framing | 4 | 647 | 161 | 187 | 27,760 | 148 | |||
Position of crucial info. | 34 | 5929 | 174 | 27 | 3246 | 135 | |||
Social norms | 12 | 1507 | 126 | ||||||
Simple to process vis. | 16 | 2095 | 129 | 6 | 345 | 58 | |||
Messenger effect | 61 | 9109 | 149 | 41 | 3715 | 90 | |||
Emotive wording | 3 | 560 | 187 | 58 | 5698 | 98 | |||
No nudge | 1 | 29 | 29 | 50 | 3492 | 70 | |||
Monetary incentives | 4 | 217 | 54 | ||||||
Commitment cues | 3 | 136 | 45 |
6 Discussion
Digital nudge in social media | Intent in use | Known/new from this study | Potential use for future EDC |
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Anchoring & adjustment | Highlight the devastation on the bushfires | New | Anchors as best practice examples to get people to make certain decisions, e.g. leave early enough |
Striking visual | Get attention; underline statements | New | To distribute information, advice, warning; nudge media organisations towards sharing |
Status quo bias | Get people to make certain decisions, e.g. leave the area | New | To get people to make decisions, to get people to give feedback |
Visual cues | Enable a quick understanding of what the message is all about | Known | To distribute information, advice, warning |
Framing | Draw attention to specific aspects, arouse interest in more information | New | Highlight special information to get people to make certain decisions; nudge media organisations towards sharing |
Position of crucial information | Bring important information into the focus | Known | To distribute information, advice, warning |
Social norms | Get people to help other people and animals | New | Get people to act in solidarity, e.g. help their neighbours |
Messenger effect | / | Known | Distribute important messages |
Simple to process visualisation | Make complex contents easily and quickly understandable | Known | To distribute information, advice, warning |
Emotive wording | Evoke sympathy, compassion, understanding | Known | Make things more comprehensible and steer people towards certain decisions, e.g. leave the area |
Monetary incentives | Collect donations | Known | Get people to donate to preferable organisations |
Commitment cues | Make people rethink their behaviour; get them to help others | New | Get people to make the right decisions, e.g. help animals |
Psychological effect | Description | Frequency |
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Framing | Design of decision-making problems with framing methods: To frame is to select some aspects of a perceived reality and make them more salient in a communicating text, in such a way as to promote a particular problem definition, causal interpretation, moral evaluation, and/or treatment recommendation for the item described. Different formulations of a message – with the same content – influence the behaviour of the recipient differently | 34 |
Status quo bias | Strong tendency to remain with status quo | 30 |
Social norms | Rules and standards that control people’s behaviour without the power of laws | 15 |
Loss aversion | Losses/disadvantages have bigger impact on choice preferences than gains/advantages | 13 |
Anchoring & adjustment | Anchor = a specific piece of information; the information may be formed by the person concerned from the circumstances or obtained from another person, or it may be present purely by chance. It is crucial for assessing a situation and making decisions. It is irrelevant whether the information is actually relevant and useful for rational decision-making | 7 |
Hyperbolic discounting | People act inconsistent in time, value presence more than future | 7 |
Decoupling | Costs for choice are included in the decision but maybe not straightforward, credit e.g. more difficult than cash, because payment is decoupled from consumption | 6 |
Priming | Influencing the processing of a stimulus. Mostly, a preceding stimulus activates implicit memory content | 6 |
Affective priming: processing of subsequent stimuli is influenced because emotional states were activated by preceding, “priming” stimulus semantic priming: activation of conceptual associations, for example word fields | ||
Availability heuristic | Tendency to assess the probability of events based on how easily something can be accessed | 5 |
Commitment | Persons act in a self-committed manner if they are firmly in favour of action or decision; willingness to behave increases | 4 |
Mental accounting | People divide their financial transactions in different accounts and treat all of them differently | 4 |
Optimism & over-confidence | Tendency to believe that one is less at risk for something than others | 4 |
Trust of a person in their abilities is greater than objective accuracy | ||
Attentional collapse | Tendency to imagine the future wrong because of mental comparisons made. In the end different experience than expected because there is no time to think about alternatives | 3 |
Messenger effect | The messenger and their social position affect the decision-making process | 3 |
Image motivation | 2 | |
Intertemporal choice | The process of deciding what and how much to do at different times when decisions made at one point in time affect opportunities at other points in time. These decisions are influenced by the relative value attached to two or more payouts at different points in time | 2 |
Representativeness & stereotypes | The degree of familiarity with a structure or selectable option influences decisions: on the basis of ideas and thought patterns that are firmly anchored in the brain and are no longer questioned in our daily thinking, perception and decision-making processes | 2 |
Endowment effect | Tendency to value a good more when one owns it | 1 |
Spotlight effect | Tendency to believe that people pay much more attention to you than they do | 1 |
Database | Article | Field of application | Digital nudge | ||||||||
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Consumer psychology | Enterprise | Gaming | Health | Pro-envir. behaviour | Security and privacy | Social media | Design | Information | Interaction element | ||
Web of Science | Bergman et al. (2019) | X | X | ||||||||
SpringerLink | Choe et al. (2018) | X | X | ||||||||
Web of Science | Dantzig et al. (2013) | X | X | ||||||||
Scopus | Esposito et al. (2017) | X | X | X | |||||||
Web of Science | Furnell e al. (2018) | X | X | X | |||||||
AISeL | Henkel et al. (2019) | X | X | X | |||||||
AISeL | Huang et al. (2018) | X | X | X | |||||||
Web of Science | Kim and Dennis (2019) | X | X | X | |||||||
Web of Science | Kretzer and Maedche (2018) | X | X | ||||||||
Web of Science | Malhotra et al. (2016) | X | X | X | |||||||
Scopus | Niederberger and Champniss (2018) | X | X | ||||||||
Web of Science | Schneider and Graham (2017) | X | X | X | |||||||
AISeL | Schneider et al. (2017) | X | X | ||||||||
AISeL | Székely et al. (2016) | X | X | X | |||||||
AISeL | Terres et al. (2019) | X | X | ||||||||
ACM | Ur et al. (2012) | X | X |