Linking Item Parameters Onto a Common Scale
نویسندگان
چکیده
منابع مشابه
Linking Item Parameters to a Base Scale
This paper compares three methods of item calibration—concurrent calibration, separate calibration with linking, and fixed item parameter calibration—that are frequently used for linking item parameters to a base scale. Concurrent and separate calibrations were implemented using BILOG-MG. The Stocking and Lord (1983) characteristic curve method of parameter linking was used in conjunction with ...
متن کاملLinking Item Response Model Parameters
With a few exceptions, the problem of linking item response model parameters from different item calibrations has been conceptualized as an instance of the problem of test equating scores on different test forms. This paper argues, however, that the use of item response models does not require any test score equating. Instead, it involves the necessity of parameter linking due to a fundamental ...
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Creating a vertical scale involves several decisions on assessment designs and statistical analyses to determine the most appropriate vertical scale. This research study aims at investigating common item stability check procedures to arrive at vertical linking item sets that will produce the necessary constants for computing vertical theta (ability) estimates and scale scores on a vertical scal...
متن کاملSeparate Versus Concurrent Estimation of IRT Item Parameters in the Common Item Equating Design
DOCUMENT RESUME TM 030 621 Hanson, Bradley A.; Beguin, Anton A. Separate versus Concurrent Estimation of IRT Item Parameters in the Common Item Equating Design. American Coll. Testing Program, Iowa City, IA. ACT-RR-99-8 1999-12-00 36p. ACT Research Report Series, PO Box 168, Iowa City, IA 52243-0168. Reports Evaluative (142) MF01/PCO2 Plus Postage. *Equated Scores; Estimation (Mathematics); *It...
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The purposes of this dissertation are to compare how different the resulting proficiency estimates are by using two scale maintenance approaches, the horizontal and vertical approaches, in supporting scale stability across grade within form, within grade across forms, and across grades and across forms, and to thus investigate under which conditions of within-grade variability patterns and exam...
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ژورنال
عنوان ژورنال: Applied Psychological Measurement
سال: 1986
ISSN: 0146-6216,1552-3497
DOI: 10.1177/014662168601000402