Individual Differences in Susceptibility to False Memories for COVID-19
Total Page:16
File Type:pdf, Size:1020Kb
Greene and Murphy Cogn. Research (2020) 5:63 https://doi.org/10.1186/s41235-020-00262-1 Cognitive Research: Principles and Implications BRIEF REPORT Open Access Individual diferences in susceptibility to false memories for COVID-19 fake news Ciara M. Greene1* and Gillian Murphy2 Abstract Exposure to ‘fake news’ can result in false memories, with possible consequences for downstream behaviour. Given the sharp rise in online misinformation during the coronavirus pandemic, it is important to understand the factors that infuence the development of false memories. The present study measured susceptibility to false memories fol- lowing exposure to fabricated news stories about the pandemic in a sample of 3746 participants. We investigated the efect of individual diferences in (1) knowledge about COVID-19, (2) engagement with media or discussion about the coronavirus, (3) anxiety about COVID-19 and (4) analytical reasoning. Notably, objectively and subjectively assessed knowledge about COVID-19 were not signifcantly correlated. Objectively assessed knowledge was associated with fewer false memories but more true memories, suggesting a true discrimination between true and fake news. In con- trast, participants who merely believed themselves to be very knowledgeable were more likely to report a memory for true stories, but showed no reduction in false memories. Similarly, individuals who reported high levels of media engagement or anxiety about COVID-19 reported an increase in true (but not false) memories. Finally, higher levels of analytical reasoning were associated with fewer memories for both true and fabricated stories, suggesting a stricter threshold for reporting a memory for any story. These data indicate that false memories can form in response to fake COVID-19 news and that susceptibility to this misinformation is afected by the individual’s knowledge about and interaction with COVID-19 information, as well as their tendency to think critically. Signifcance statement with acceptance of COVID-19 fake news. We report that Te coronavirus pandemic has been associated with an people who are more knowledgeable about COVID-19 or unprecedented surge in online misinformation, to the who score better on a test of analytical reasoning, are less extent that the World Health Organisation has warned prone to reporting false memories following exposure to of an ‘infodemic’ that may have signifcant behavioural fabricated stories. In contrast, people who simply believe consequences. Previous research has shown that expo- themselves to be knowledgeable are more likely to report sure to ‘fake news’ can result in false memories, with memories for true stories, but are not protected against possible consequences for subsequent behaviour. Suscep- false memories. People who are very anxious about tibility to these false memories is afected by individual COVID-19, or who engage with a lot of related content, diferences in a range of variables. If online health mis- are also more likely to report a memory for true (but not information is to be efectively countered, it is critical false) stories. Tese fndings may help in the development that we understand which factors will lead individuals to of fake news interventions and suggest that a combina- believe, remember or act on fake news. In this study, we tion of interventions aimed at increasing public knowl- identify a series of factors with proven links to misinfor- edge and encouraging critical evaluation of news stories mation susceptibility, and investigate their relationship may be most efective. *Correspondence: [email protected] 1 School of Psychology, University College Dublin, Dublin, Ireland Full list of author information is available at the end of the article © The Author(s) 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creat iveco mmons .org/licen ses/by/4.0/. Greene and Murphy Cogn. Research (2020) 5:63 Page 2 of 8 Introduction efects of self-reported knowledge and overclaiming see Te months since the onset of the COVID-19 pandemic Atir et al. 2015; Pennycook and Rand 2020). Tese fnd- have seen a sharp rise in the quantity of online misin- ings have clear signifcance in the case of COVID-19 formation (Brennen et al. 2020; Kouzy et al. 2020). It has and the associated ‘infodemic’, as people are bombarded been argued that this ‘fake news’ may have severe conse- with enormous quantities of both true and fabricated quences for public health and adherence to public health health information. Tis deluge of information may also guidelines (e.g. O’Connor and Murphy 2020; Van Bavel contribute to high rates of virus-anxiety (Jungmann and et al. 2020; but see Greene and Murphy 2020). Exposure Witthöft 2020). It is not known if individuals who are to fabricated news stories can result in false memories particularly anxious about the public health situation, or for the events depicted in the stories (Frenda et al. 2013; who consider themselves to be at high risk for COVID- O’Connell and Greene 2017; Polage 2012). Tese memo- 19, may be particularly susceptible to forming or report- ries are often reported in rich detail and are more likely ing false memories for related news items. when a false story aligns with an individual’s political or Reporting false memories for fake news stories has social views (Murphy et al. 2019). False memories may been associated with lower levels of cognitive ability have behavioural consequences (see Laney and Loftus (Murphy et al. 2019) and analytical reasoning (Greene 2016 for a review); it is therefore important to under- et al. 2020). Tese fndings ft well with research linking stand the factors leading to their formation, so that efec- critical-thinking defcits with belief in fake news (Bago tive interventions can be put in place. et al. 2020; Pennycook and Rand 2019, 2020), and with Tere are a range of contextual factors that may infu- increased acceptance of COVID-19 misinformation ence an individual’s tendency to believe, remember (Pennycook et al. 2020a, b). Notably, Martire et al. (2020), or share a piece of misinformation. Tese include ele- writing in the present special issue of Cognitive Research: ments that increase the ‘truthiness’, or subjective feel- Principles and Implications, report that even individuals ing of truth about a story. Real-world news stories are who endorse clearly implausible claims (e.g. “the earth is typically accompanied by a photograph, that may or may fat”) are more persuaded by high-quality evidence than not provide additional information about the content low quality evidence. Tis suggests that at least some of the story. Research has shown that presenting a non- critical analysis is taking place; the authors argue that it probative photograph alongside a text description can may be more appropriate to argue that individuals who suggest the presence of multiple corroborating sources accept the implausible claims sometimes found in fake for the fabricated event, and thus increase truth ratings news engage in less refective thinking rather than none (Newman and Zhang 2020; Newman et al. 2012) and at all. false memory rates (Strange et al. 2011). Similarly, mul- Understanding the role of these factors in the context tiple presentations of a story can trick participants into of the coronavirus crisis is the key frst step in developing feeling an increased sense of familiarity for the events efective interventions; for example, a focus on increas- depicted—a phenomenon termed ‘illusory truth’ (Penny- ing public knowledge will be inefective if misinformation cook et al. 2018). acceptance is driven, not by ignorance, but by a failure to Individual diferences in a range of variables, includ- critically analyse unverifed content. ing age, intelligence and personality traits, may afect the propensity to form a false memory for misinformation The present study (Lee 2004; Roediger and Geraci 2007; Zhu et al. 2010a, b). We investigated the efect of individual diferences in a In addition, expertise or a high level of interest in a par- range of variables on the formation of false memories for ticular topic has been associated with an increased ten- fabricated news items. Tese include objectively assessed dency to form false memories related to that topic (Baird and subjectively perceived knowledge about, engagement 2003; Castel et al. 2007; Mehta et al. 2011; O’Connell and with and anxiety relating to COVID-19, as well as indi- Greene 2017). Recent evidence has however suggested vidual diferences in critical reasoning. We hypothesised that objectively assessed subject-knowledge is associ- that perceived knowledge, anxiety and engagement with ated with better discrimination in reported memories for COVID-related media would be associated with a bias true and fabricated stories, while interest or engagement towards reporting memories for related stories, result- with a topic increases the tendency to report a memory ing in increased rates of both true and false memories. for any given story (Greene et al. 2020). Tis suggests In contrast, we expected objectively assessed knowledge that reports of false memories associated with knowledge about the coronavirus to be associated with better dis- of a topic may be the result of overclaiming, as partici- crimination between true and fabricated stories, resulting pants are reluctant to admit ignorance of events pertain- in increased true memories but decreased false memo- ing to their area of interest (for similar fndings on the ries.