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{
    "pk": 28346,
    "title": "Unsupervised Learning Shapes Emotion Categories",
    "subtitle": null,
    "abstract": "Humans perceive facial expressions categorically, though physical features of emotions vary continuously. How do cat-egorical representations of facial expressions emerge or update? We explored how supervised and unsupervised learninginfluence emotion category boundaries. 91 children (6-8-years-old) and 105 adults categorized emotions varying along aneutral-angry continuum. Participants completed a supervised learning phase, which explicitly taught an emotion cate-gory boundary. Then, participants completed an unsupervised learning phase. Without feedback, participants categorizedexpressions sampled from statistical distributions that matched or did not match the distribution categorized during su-pervised learning. Participants learned the boundary via supervised learning, but responses rapidly shifted followingthe statistical distribution via unsupervised learning. Thus, participants quickly updated emotion categories, indicatingboundaries are highly context-sensitive. Such flexibility allows individuals to adjust across situations and organize re-sponses based on extant, versus explicitly taught, socio-emotional cues. Follow-up research explores how participantsadjust category boundaries for multiple individuals varying in expressivity.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [],
    "section": "Abstracts-Posters",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/99q8v4gr",
    "frozenauthors": [
        {
            "first_name": "Rista",
            "middle_name": "",
            "last_name": "Plate",
            "name_suffix": "",
            "institution": "University of Wisconsin-Madison",
            "department": ""
        },
        {
            "first_name": "Adrienne",
            "middle_name": "",
            "last_name": "Wood",
            "name_suffix": "",
            "institution": "University of Wisconsin-Madison",
            "department": ""
        },
        {
            "first_name": "Seth",
            "middle_name": "D.",
            "last_name": "Pollak",
            "name_suffix": "",
            "institution": "University of Wisconsin-Madison",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2018-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/28346/galley/18064/download/"
        }
    ]
}