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Educational Methods

Doctoral Dissertations

Item Response Theory

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Evaluating The Impact Of Construct Shift On Item Parameter Invariance, Test Equating And Proficiency Estimates, Xueming Li Nov 2015

Evaluating The Impact Of Construct Shift On Item Parameter Invariance, Test Equating And Proficiency Estimates, Xueming Li

Doctoral Dissertations

Common Core State Standards in English Language Arts and Mathematics at grades K to 12 were introduced in 2009 and at one time had been accepted by 45 of the states in the U.S. The new standards have created national curricula in these two subject areas. Along with this reform, new assessment systems have been developed too. Many of these new tests are showing signs of being more multidimensional than the tests they were replacing because of the use of new item formats, and the assessment of higher level thinking skills and various performance skills. In the short term ...


Development Of The Biostatistics And Clinical Epidemiology Skills Assessment For Medical Residents, Patrick Brian Barlow May 2014

Development Of The Biostatistics And Clinical Epidemiology Skills Assessment For Medical Residents, Patrick Brian Barlow

Doctoral Dissertations

This study developed the Biostatics and Clinical Epidemiology Skills (BACES) assessment, and established its preliminary item characteristics and validity evidence. Unlike previous instruments, the BACES assessment was developed and tested using an item response theory (IRT) approach to measurement to create a new, adaptive biostatistics and clinical epidemiology knowledge assessment for graduate medical professionals. Thirty multiple-choice questions were written to focus on interpreting relevant examples of clinical epidemiology and statistical methods. A four person expert panel reviewed these items for content validity. After this review, the BACES assessment was administered to 147 medical residents across three academic medical centers. Results ...


Effect Of Automatic Item Generation On Ability Estimates In A Multistage Test, Kimberly F. Colvin Apr 2014

Effect Of Automatic Item Generation On Ability Estimates In A Multistage Test, Kimberly F. Colvin

Doctoral Dissertations

In adaptive testing, including multistage adaptive testing (MST), the psychometric properties of the test items are needed to route the examinees through the test. However, if testing programs use items which are automatically generated at the time of administration there is no opportunity to calibrate the items therefore the items’ psychometric properties need to be predicted. This simulation study evaluates the accuracy with which examinees’ abilities can be estimated when automatically generated items, specifically, item clones, are used in MSTs. The behavior of the clones in this study was modeled according to the results of Sinharay and Johnson’s (2008 ...