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Educational Psychology

2010

Equating

Articles 1 - 3 of 3

Full-Text Articles in Education

Impact Of Matched Samples Equating Methods On Equating Accuracy And The Adequacy Of Equating Assumptions, Sonya Jean Powers Dec 2010

Impact Of Matched Samples Equating Methods On Equating Accuracy And The Adequacy Of Equating Assumptions, Sonya Jean Powers

Theses and Dissertations

This dissertation investigates the interaction of population invariance, equating assumptions, and equating accuracy with group differences. In addition, matched samples equating methods are considered as a possible way to improve equating accuracy with large group differences.

Data from one administration of four mixed-format Advanced Placement (AP) Exams were used to create pseudo old and new forms sharing common items. Population invariance analyses were conducted based on levels of examinee parental education using a single group equating design. Old and new form groups with common item effect sizes (ESs) ranging from 0 to 0.75 were created by sampling examinees based ...


The Impact Of Equating Method And Format Representation Of Common Items On The Adequacy Of Mixed-Format Test Equating Using Nonequivalent Groups, Sarah Lynn Hagge Jul 2010

The Impact Of Equating Method And Format Representation Of Common Items On The Adequacy Of Mixed-Format Test Equating Using Nonequivalent Groups, Sarah Lynn Hagge

Theses and Dissertations

Mixed-format tests containing both multiple-choice and constructed-response items are widely used on educational tests. Such tests combine the broad content coverage and efficient scoring of multiple-choice items with the assessment of higher-order thinking skills thought to be provided by constructed-response items. However, the combination of both item formats on a single test complicates the use of psychometric procedures. The purpose of this dissertation was to examine how characteristics of mixed-format tests and composition of the common-item set impact the accuracy of equating results in the common-item nonequivalent groups design.

Operational examinee item responses for two classes of data were considered ...


Observed Score And True Score Equating Procedures For Multidimensional Item Response Theory, Bradley Grant Brossman May 2010

Observed Score And True Score Equating Procedures For Multidimensional Item Response Theory, Bradley Grant Brossman

Theses and Dissertations

The purpose of this research was to develop observed score and true score equating procedures to be used in conjunction with the Multidimensional Item Response Theory (MIRT) framework. Currently, MIRT scale linking procedures exist to place item parameter estimates and ability estimates on the same scale after separate calibrations are conducted. These procedures account for indeterminacies in (1) translation, (2) dilation, (3) rotation, and (4) correlation. However, no procedures currently exist to equate number correct scores after parameter estimates are placed on the same scale. This research sought to fill this void in the current psychometric literature.

Three equating procedures--two ...