The Bots of Persuasion: Examining How Conversational Agents' Linguistic Expressions of Personality Affect User Perceptions and Decisions

Fuente: arXiv
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Hauptverfasser: Genç, Uğur, Gu, Heng, Degachi, Chadha, Niforatos, Evangelos, Chandrasegaran, Senthil, Verma, Himanshu
Format: Preprint
Veröffentlicht: 2026
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author Genç, Uğur
Gu, Heng
Degachi, Chadha
Niforatos, Evangelos
Chandrasegaran, Senthil
Verma, Himanshu
author_facet Genç, Uğur
Gu, Heng
Degachi, Chadha
Niforatos, Evangelos
Chandrasegaran, Senthil
Verma, Himanshu
contents Large Language Model-powered conversational agents (CAs) are increasingly capable of projecting sophisticated personalities through language, but how these projections affect users is unclear. We thus examine how CA personalities expressed linguistically affect user decisions and perceptions in the context of charitable giving. In a crowdsourced study, 360 participants interacted with one of eight CAs, each projecting a personality composed of three linguistic aspects: attitude (optimistic/pessimistic), authority (authoritative/submissive), and reasoning (emotional/rational). While the CA's composite personality did not affect participants' decisions, it did affect their perceptions and emotional responses. Particularly, participants interacting with pessimistic CAs felt lower emotional state and lower affinity towards the cause, perceived the CA as less trustworthy and less competent, and yet tended to donate more toward the charity. Perceptions of trust, competence, and situational empathy significantly predicted donation decisions. Our findings emphasize the risks CAs pose as instruments of manipulation, subtly influencing user perceptions and decisions.
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id arxiv_https___arxiv_org_abs_2602_17185
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The Bots of Persuasion: Examining How Conversational Agents' Linguistic Expressions of Personality Affect User Perceptions and Decisions
Genç, Uğur
Gu, Heng
Degachi, Chadha
Niforatos, Evangelos
Chandrasegaran, Senthil
Verma, Himanshu
Human-Computer Interaction
Artificial Intelligence
Large Language Model-powered conversational agents (CAs) are increasingly capable of projecting sophisticated personalities through language, but how these projections affect users is unclear. We thus examine how CA personalities expressed linguistically affect user decisions and perceptions in the context of charitable giving. In a crowdsourced study, 360 participants interacted with one of eight CAs, each projecting a personality composed of three linguistic aspects: attitude (optimistic/pessimistic), authority (authoritative/submissive), and reasoning (emotional/rational). While the CA's composite personality did not affect participants' decisions, it did affect their perceptions and emotional responses. Particularly, participants interacting with pessimistic CAs felt lower emotional state and lower affinity towards the cause, perceived the CA as less trustworthy and less competent, and yet tended to donate more toward the charity. Perceptions of trust, competence, and situational empathy significantly predicted donation decisions. Our findings emphasize the risks CAs pose as instruments of manipulation, subtly influencing user perceptions and decisions.
title The Bots of Persuasion: Examining How Conversational Agents' Linguistic Expressions of Personality Affect User Perceptions and Decisions
topic Human-Computer Interaction
Artificial Intelligence
url https://arxiv.org/abs/2602.17185