Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro

Giovana Piorino; Marco Antônio de Alcântara Machado; Luiz Henrique Quevedo Lima; Adriana Pagano; Ana Paula Couto da Silva

Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro

Giovana Piorino, Marco Antônio de Alcântara Machado, Luiz Henrique Quevedo Lima, Adriana Pagano, Ana Paula Couto da Silva

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Abstract

In this paper we analyze the structural and linguistic dynamics of online toxicity in Reddit discussion trees, focusing on how trigger comments escalate conflicts in Brazilian Portuguese. Using a fine-tuned BERTAbaporu model, we show that toxic discussions are deeper, more engaging, and initially semantically cohesive, but degrade over time, while non-toxic interactions emphasize social bonding. Our findings contribute to a better understanding of toxicity escalation and support early detection of discursive conflicts.

Anthology ID:: 2026.propor-1.57
Volume:: Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 1
Month:: April
Year:: 2026
Address:: Salvador, Brazil
Editors:: Marlo Souza, Iria de-Dios-Flores, Diana Santos, Larissa Freitas, Jackson Wilke da Cruz Souza, Eugénio Ribeiro
Venue:: PROPOR
SIG:
Publisher:: Association for Computational Linguistics
Note:
Pages:: 581–590
Language:
URL:: https://aclanthology.org/2026.propor-1.57/
DOI:
Bibkey:
Cite (ACL):: Giovana Piorino, Marco Antônio de Alcântara Machado, Luiz Henrique Quevedo Lima, Adriana Pagano, and Ana Paula Couto da Silva. 2026. Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro. In Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 1, pages 581–590, Salvador, Brazil. Association for Computational Linguistics.
Cite (Informal):: Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro (Piorino et al., PROPOR 2026)
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PDF:: https://aclanthology.org/2026.propor-1.57.pdf

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@inproceedings{piorino-etal-2026-dialogos,
    title = "Di{\'a}logos T{\'o}xicos: Gatilhos e Padr{\~o}es de Intera{\c{c}}{\~a}o no {R}eddit Brasileiro",
    author = "Piorino, Giovana  and
      Machado, Marco Ant{\^o}nio de Alc{\^a}ntara  and
      Lima, Luiz Henrique Quevedo  and
      Pagano, Adriana  and
      Silva, Ana Paula Couto da",
    editor = "Souza, Marlo  and
      de-Dios-Flores, Iria  and
      Santos, Diana  and
      Freitas, Larissa  and
      Souza, Jackson Wilke da Cruz  and
      Ribeiro, Eug{\'e}nio",
    booktitle = "Proceedings of the 17th International Conference on Computational Processing of {P}ortuguese ({PROPOR} 2026) - Vol. 1",
    month = apr,
    year = "2026",
    address = "Salvador, Brazil",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.propor-1.57/",
    pages = "581--590",
    ISBN = "979-8-89176-387-6",
    abstract = "In this paper we analyze the structural and linguistic dynamics of online toxicity in Reddit discussion trees, focusing on how trigger comments escalate conflicts in Brazilian Portuguese. Using a fine-tuned BERTAbaporu model, we show that toxic discussions are deeper, more engaging, and initially semantically cohesive, but degrade over time, while non-toxic interactions emphasize social bonding. Our findings contribute to a better understanding of toxicity escalation and support early detection of discursive conflicts."
}

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%0 Conference Proceedings
%T Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro
%A Piorino, Giovana
%A Machado, Marco Antônio de Alcântara
%A Lima, Luiz Henrique Quevedo
%A Pagano, Adriana
%A Silva, Ana Paula Couto da
%Y Souza, Marlo
%Y de-Dios-Flores, Iria
%Y Santos, Diana
%Y Freitas, Larissa
%Y Souza, Jackson Wilke da Cruz
%Y Ribeiro, Eugénio
%S Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 1
%D 2026
%8 April
%I Association for Computational Linguistics
%C Salvador, Brazil
%@ 979-8-89176-387-6
%F piorino-etal-2026-dialogos
%X In this paper we analyze the structural and linguistic dynamics of online toxicity in Reddit discussion trees, focusing on how trigger comments escalate conflicts in Brazilian Portuguese. Using a fine-tuned BERTAbaporu model, we show that toxic discussions are deeper, more engaging, and initially semantically cohesive, but degrade over time, while non-toxic interactions emphasize social bonding. Our findings contribute to a better understanding of toxicity escalation and support early detection of discursive conflicts.
%U https://aclanthology.org/2026.propor-1.57/
%P 581-590

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Markdown (Informal)

[Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro](https://aclanthology.org/2026.propor-1.57/) (Piorino et al., PROPOR 2026)

Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro (Piorino et al., PROPOR 2026)

ACL

Giovana Piorino, Marco Antônio de Alcântara Machado, Luiz Henrique Quevedo Lima, Adriana Pagano, and Ana Paula Couto da Silva. 2026. Diálogos Tóxicos: Gatilhos e Padrões de Interação no Reddit Brasileiro. In Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 1, pages 581–590, Salvador, Brazil. Association for Computational Linguistics.