A note on item information in any direction for the multidimensional three-parameter logistic model

    Authors

    D. U. Bryant

    Comments

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    Abbreviated Journal Title

    Psychometrika

    Keywords

    item information; measurement direction; multidimensional measurement; maximum information; three-parameter logistic model; Mathematics, Interdisciplinary Applications; Social Sciences, ; Mathematical Methods; Psychology, Mathematical

    Abstract

    The purpose of this note is twofold: (a) to present the formula for the item information function (IIF) in any direction for the Multidimensional 3-Parameter Logistic (M3-PL) model and (b) to give the equation for the location of maximum item information (theta(max)) in the direction of the item discrimination vector. Several corollaries are given. Implications for future research are discussed.

    Journal Title

    Psychometrika

    Volume

    70

    Issue/Number

    1

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    213

    Last Page

    216

    WOS Identifier

    WOS:000235231500013

    ISSN

    0033-3123

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