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{
    "pk": 27603,
    "title": "Comparing comparison indices: Assessing the validity of different magnitudecomparison measures across presentation formats and age groups",
    "subtitle": null,
    "abstract": "Magnitude comparison tasks are used to assess the precision of numerical representations. Recent research, how-ever, questions the validity of different measures of magnitude comparison. We investigated the validity of five performancemeasures: overall RT, overall accuracy, numerical ratio effect (RT), numerical ratio effect (accuracy), and Weber fraction.Kindergarten and university students completed symbolic and non-symbolic magnitude comparison tasks and a math skill mea-sure. For children and adults, we calculated Chronbach’s α separately for each presentation format. All values were in theunacceptable range, indicating that the different indices were not measuring the same construct. For children, a multiple re-gression predicting KeyMath scores from symbolic and non-symbolic indices showed that only non-symbolic overall accuracyand symbolic overall RT were predictors. For adults, a multiple regression predicting French Kit scores showed that only thesymbolic numerical ratio effect (RT) was a predictor. No index demonstrated predictive validity across formats or age groups.",
    "language": "eng",
    "license": {
        "name": "",
        "short_name": "",
        "text": null,
        "url": ""
    },
    "keywords": [],
    "section": "Posters: Member Abstracts",
    "is_remote": true,
    "remote_url": "https://escholarship.org/uc/item/6q79016r",
    "frozenauthors": [
        {
            "first_name": "Marcie",
            "middle_name": "",
            "last_name": "Penner-Wilger",
            "name_suffix": "",
            "institution": "King’s University College at Western University",
            "department": ""
        },
        {
            "first_name": "Aaron",
            "middle_name": "",
            "last_name": "Cecala",
            "name_suffix": "",
            "institution": "Elizabethtown College",
            "department": ""
        },
        {
            "first_name": "Melissa",
            "middle_name": "",
            "last_name": "Elfers",
            "name_suffix": "",
            "institution": "King’s University College at Western University",
            "department": ""
        }
    ],
    "date_submitted": null,
    "date_accepted": null,
    "date_published": "2017-01-01T18:00:00Z",
    "render_galley": null,
    "galleys": [
        {
            "label": "PDF",
            "type": "pdf",
            "path": "https://journalpub.escholarship.org/cognitivesciencesociety/article/27603/galley/17239/download/"
        }
    ]
}