The use of item statistics in the calibration of an item bank

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The use of item statistics in the calibration of an item bank

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1986

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An IRT analysis based on p (proportion correct) and r (item-test correlation) is proposed for a group of tests having items in common. The procedure is a generalization of a procedure proposed by De Gruijter and Mooijaart (1983) which is related to procedures for the factor analysis of dichotomous data. The procedure results in IRT item parameters using data from examinee groups with subsets of common items; it is, therefore, particularly appropriate for calibrating items for use in small-scale item banks. Simulated data are used to illustrate the procedure.

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de Gruijter, Dato N. (1986). The use of item statistics in the calibration of an item bank. Applied Psychological Measurement, 10, 231-237. doi:10.1177/014662168601000302

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doi:10.1177/014662168601000302

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De Gruijter, Dato N. M.. (1986). The use of item statistics in the calibration of an item bank. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/102722.

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