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{
    "pk": 49426,
    "title": "When Machines Speak with Feeling: Investigating Emotional Prosody, Authenticity, and Trust in AI vs. Human Voices",
    "subtitle": null,
    "abstract": "Emotional prosody---vocal cues that convey affect---profoundly influences how listeners interpret a speaker's intentions. We conducted two studies comparing AI- and human-generated emotional speech. In Study 1 (N=38), participants categorized five emotions (happy, sad, angry, neutral, fear) expressed by human voices and by an advanced text-to-speech (TTS) system. Human recordings exhibited higher overall accuracy (79.82% vs. 72.65%) and were rated significantly more natural, an effect partially explained by micro-perturbations (e.g., jitter, shimmer) that enhanced perceived authenticity. In Study 2 (N=53), these validated stimuli were incorporated into short scenarios, with each speaker labeled as either ``human'' or ``AI.'' Even when participants heard identical clips, those informed that the speaker was human exhibited greater trust and empathy, resulting in higher donation and advice-following rates. Although contemporary TTS systems effectively convey broad affective states, explicit AI labeling reduces perceived credibility and social engagement, underscoring the critical role that preexisting expectations play in human--AI communication.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [
        {
            "word": "Psychology; Emotion; Emotion Perception; Empathy; Quantitative Behavior"
        }
    ],
    "section": "Papers with Poster Presentation",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/8vr8s6h8",
    "frozenauthors": [
        {
            "first_name": "Guangrui",
            "middle_name": "",
            "last_name": "Fan",
            "name_suffix": "",
            "institution": "Taiyuan University of Science and Technology",
            "department": ""
        },
        {
            "first_name": "Dandan",
            "middle_name": "",
            "last_name": "Liu",
            "name_suffix": "",
            "institution": "Universiti Malaya",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2025-01-02T00:00:00+06:00",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/49426/galley/37388/download/"
        }
    ]
}