To foster effective human-agent interactions, designers must understand how vocal cues influence the perception of agent personality and the role of user-agent alignment in shaping these perceptions. In this work, we examine whether users can perceive extroversion in voice-only artificial agents and how perceived personality relates to user-agent synchrony. We conducted a study with 388 participants, who evaluated four synthetic voices derived from human recordings, varying by gender (male, female) and personality expression (introverted, extroverted). Our results show that participants were able to differentiate perceived extroversion in female agent voices, but not consistently in male voices. We also observed evidence of perceived personality synchrony, particularly in participants' evaluations of the first agent encountered, with this effect more pronounced among male participants and toward male agents. We discuss these findings in light of limitations in stimulus diversity and voice representation, and outline implications for the design of voice-based agents, particularly regarding the interaction between gender, personality perception, and initial user impressions. This paper contributes findings and insights to consider the interplay of user-agent personality and gender synchrony in the design of human-agent interactions.

翻译：为了促进有效的人机交互，设计师必须理解声音线索如何影响对智能体个性的感知，以及用户与智能体之间的一致性在塑造这些感知中的作用。在本研究中，我们探讨用户是否能感知纯语音人工智能体中的外向性，以及感知到的个性如何与用户-智能体同步性相关。我们进行了一项包含388名参与者的研究，评估了四种源自人类录音的合成语音，这些语音在性别（男、女）和个性表达（内向、外向）上有所不同。结果显示，参与者能够区分女性智能体语音中感知到的外向性，但在男性语音中并非始终一致。我们还观察到感知个性同步性的证据，尤其是在参与者对首个接触的智能体的评价中，这种效应在男性参与者中以及针对男性智能体时更为显著。我们根据刺激多样性和语音表征的局限性讨论了这些发现，并概述了对基于语音的智能体设计的意义，特别是涉及性别、个性感知与用户初始印象之间的互动。本文为在人机交互设计中考虑用户-智能体个性与性别同步性的相互作用提供了研究发现与见解。