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{
    "pk": 29226,
    "title": "Modeling practice-related reaction time speedup using hierarchical Bayesianmethods: Evidence for a process-shift account",
    "subtitle": null,
    "abstract": "In skill-learning tasks, reaction times (RTs) typically decrease with practice. For example, in alphabet arithmetic tasks(e.g. J + 7 = ?), learners respond correctly (e.g. Q) faster on later than on earlier trials. A number of mathematicalmodels have been proposed to account for the functional form of practice-related RT speedup. We aim to evaluate whichof two candidates better fits observed speedup data for individual learners across several tasks. In particular, we comparea process-shift account in which learners initially execute an algorithm in constant time, but as trials accumulate, exhibitpower-law speedup as they directly retrieve a memorized solution to a delayed exponential model in which RTs decreaseexponentially after learners eventually achieve insight into a task-appropriate strategy. Using hierarchical Bayesian modelsof each account (which can flexibly model learning in individual subjects), we show that the process-shift model betterpredicts out-of-sample data than the delayed-exponential model.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [],
    "section": "Member Abstracts",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/2b92m3j5",
    "frozenauthors": [
        {
            "first_name": "Jarrett",
            "middle_name": "",
            "last_name": "Lovelett",
            "name_suffix": "",
            "institution": "University of California San Diego",
            "department": ""
        },
        {
            "first_name": "Ed",
            "middle_name": "",
            "last_name": "Vul",
            "name_suffix": "",
            "institution": "University of California San Diego",
            "department": ""
        },
        {
            "first_name": "Tim",
            "middle_name": "",
            "last_name": "Rickard",
            "name_suffix": "",
            "institution": "University of California San Diego",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2019-01-01T21:00:00+03:00",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/29226/galley/19097/download/"
        }
    ]
}