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{
    "pk": 50111,
    "title": "The dimensionality of individual differences in perceptual decision making",
    "subtitle": null,
    "abstract": "Perceptual decision-making is the process of integrating perceptual evidence and prior experience to a decision. Yet even simple tasks show systematic deviations from optimality. To explore the suboptimalities and their latent structure, we analyzed behavioral data from 155 participants performing a Bernoulli clicks task, each completing 500 trials identifying the side with more clicks.  The data were fit with a customized neural-network incorporating temporal kernel weighting individual clicks, side bias, and win–stay/lose–shift effect. Weights on these suboptimalities exhibited substantial variabilities across participants but were captured by a concise structure: two dimensions represented temporal integration kernel, two dimensions reflected win–stay/lose–shift kernel, and one dimension corresponded to side bias. This compact five-dimensional structure and random noise explained the observed suboptimalities. Our results indicate seemingly complex individual differences can be decomposed into a small set of dissociable cognitive processes, providing insight into the structure underlying decision-making variability.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [
        {
            "word": "Psychology; Decision making; Perception; Sensory Processing; Computational Modeling"
        }
    ],
    "section": "Abstracts with Poster Presentation (accepted as Abstracts)",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/1x87g1mw",
    "frozenauthors": [
        {
            "first_name": "Jingming",
            "middle_name": "",
            "last_name": "Xue",
            "name_suffix": "",
            "institution": "Georgia Institute of Technology",
            "department": ""
        },
        {
            "first_name": "Robert",
            "middle_name": "",
            "last_name": "Wilson",
            "name_suffix": "",
            "institution": "Georgia Tech",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2025-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/50111/galley/38073/download/"
        }
    ]
}