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3 publications found

Dec 16, 2024 Article
(Un)certainty in science and climate change: a longitudinal analysis (2014–2022) of narratives about climate science on social media in Brazil (Instagram, Facebook, and Twitter)

by Roberta Lima, Andre L. Belem, Diógenes Lycarião, Thaiane Oliveira, Simone Evangelista, Luisa Massarani and Marcelo Alves

This article examines climate change discourse on Brazilian social media from 2014 to 2022 and use a longitudinal approach, analyzing discourse, scientific authority, and eco-emotions on Instagram, Facebook, and Twitter. Methods include TF-IDF for feature extraction, sentiment analysis with VADER, and Named Entity Recognition (NER). A Ridge Classifier was trained on 557 manually classified samples. Findings show no significant increase in challenges to scientific authority or skepticism, but reveal a subtle shift towards using uncertainty as a rhetorical tool to undermine trust in scientific discourse.

Volume 23 • Issue 09 • 2024 • Special Issue: Public (dis)trust in science in digital media environments

Jan 29, 2024 Review Article
Confronting misinformation related to health and the environment: a systematic review

by Thaiane Oliveira, Nicolas de Oliveira Cardoso, Wagner de Lara Machado, Reynaldo Aragon Gonçalves, Rodrigo Quinan, Eduarda Zorgi Salvador, Camila Almeida and Aline Paes

Confronting misinformation related to health and the environment comprises one of the major global concerns. Therefore, this systematic literature review, aims to identify the most used strategies to confront misinformation related to health, and the environment. The relevance of the interventions was assessed considering the frequency with which they are used and reported as effective. Five widely used databases were searched between 2010 and 2021 (Web of Science, Scopus, PsycINFO, Science Direct, IEEE Xplore). A total of 14.285 records were initially retrieved. Then, after applying inclusion and exclusion criteria, 32 peer-reviewed papers were included and analyzed in depth through this review. The results indicate that interventions based on credible information (debunking) were the most used among the included studies, followed by exposure and correction (debunking), inoculation, information, and media literacy (prebunking), and deliberation prompts (nudging). Most {interventions had }an effect size between small and medium, but most effects are limited to a specific myth/belief. We also found that most studies are conducted in the U.S. Therefore, experimental replication with same and different beliefs as outcomes and interventions cross-cultural adaptation to other countries are recommended.

Volume 23 • Issue 01 • 2024

Nov 07, 2022 Commentary
Research in science communication in Latin America: mind the gap

by Luisa Massarani and Thaiane de Oliveira

In this commentary, we discuss the challenges associated with carrying out research in science communication in Latin America. We start with the ‘‘invisibility’’ of Latin American studies in the three most prominent international journals in the field (although there has been a growing number of studies in the region). Then, we look to the recent popularisation of science through social media, the political issues facing the region and the massive spread of disinformation and fake news, which has been widely accentuated by the pandemic. We argue that there is an urgent need but also opportunities for innovation and collaborative research in science communication. Finally, we call attention to how the present situation might lead to bigger gaps among researchers from the developing world, including Latin America, and the so-called developed world.

Volume 21 • Issue 07 • 2022