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  2. Item analysis - Wikipedia

    en.wikipedia.org/wiki/Item_analysis

    In practical test construction, item analysis is an iterative process, and cannot be entirely automated. The psychometrician's judgement is required to determine whether the emerging set of items to be retained constitutes a satisfactory test of the target construct. [citation needed] The three criteria above do not always agree, and a balance ...

  3. Differential item functioning - Wikipedia

    en.wikipedia.org/wiki/Differential_item_functioning

    Differential item functioning (DIF) is a statistical property of a test item that indicates how likely it is for individuals from distinct groups, possessing similar abilities, to respond differently to the item. It manifests when individuals from different groups, with comparable skill levels, do not have an equal likelihood of answering a ...

  4. Item response theory - Wikipedia

    en.wikipedia.org/wiki/Item_response_theory

    In psychometrics, item response theory (IRT) (also known as latent trait theory, strong true score theory, or modern mental test theory) is a paradigm for the design, analysis, and scoring of tests, questionnaires, and similar instruments measuring abilities, attitudes, or other variables.

  5. Psychometrics - Wikipedia

    en.wikipedia.org/wiki/Psychometrics

    In a personnel selection example, test content is based on a defined statement or set of statements of knowledge, skill, ability, or other characteristics obtained from a job analysis. Item response theory models the relationship between latent traits and responses to test items. Among other advantages, IRT provides a basis for obtaining an ...

  6. Test construction strategies - Wikipedia

    en.wikipedia.org/wiki/Test_Construction_Strategies

    The group of items is then answered by a large number of participants and analyzed using various statistical methods, such as exploratory factor analysis or principal component analysis. These methods allow researchers to analyze natural relationships among the questions and then label components of the scale based on how the questions group ...

  7. Classical test theory - Wikipedia

    en.wikipedia.org/wiki/Classical_test_theory

    Classical test theory is an influential theory of test scores in the social sciences. In psychometrics, the theory has been superseded by the more sophisticated models in item response theory (IRT) and generalizability theory (G-theory).

  8. Item-total correlation - Wikipedia

    en.wikipedia.org/wiki/Item-total_correlation

    The item–total correlation is the correlation between a scored item and the total test score. It is an item statistic used in psychometric analysis to diagnose assessment items that fail to indicate the underlying psychological trait so that they can be removed or revised.

  9. Computerized adaptive testing - Wikipedia

    en.wikipedia.org/wiki/Computerized_adaptive_testing

    A simple method for controlling item exposure is the "randomesque" or strata method. Rather than selecting the most informative item at each point in the test, the algorithm randomly selects the next item from the next five or ten most informative items. This can be used throughout the test, or only at the beginning. [3] Another method is the ...