In data collected from virtual learning environments (VLEs), item response theory (IRT) models can be used to guide the ongoing measurement of student ability. However, such applications of IRT rely on unbiased item parameter estimates associated with test items in the VLE. Without formal piloting of the items, one can expect a large amount of…

Falls are a significant medical and economical concern worldwide. Younger individuals with visual impairment (VI) may be more susceptible to falling and fall-related injuries when compared to peers without a VI. Self-perceived balance confidence is a psychological construct that may predict and/or mediate fall- or other health-related outcomes in…

This study defines subpopulation item parameter drift (SIPD) as a change in item parameters over time that is dependent on subpopulations of examinees, and hypothesizes that the presence of SIPD in anchor items is associated with bias and/or lack of invariance in three psychometric outcomes. Results show that SIPD in anchor items is associated…

Determining the cross-cultural equivalence of multilingual tests is a challenge that is more complex than simple horizontal equating of test forms. This study examines the functioning of a trilingual test of preschool readiness to determine the equivalence. Different forms of the test have previously been examined using classical statistical…

This study investigated the feasibility of the use of the three-parameter item response theory (IRT) model in Florida's minimum competency testing program. The paper includes the following sections: (1) a description of the procedures currently being used by the assessment program, with an emphasis on procedures currently involving the Rasch…

This study investigated the feasibility of using the three-parameter model in Florida's minimum competency testing program. LOGIST 4 was used to analyze 1984 Statewide Student Assessment Tests (SSAT)-II data, exploring possibilities that easiness of the test would cause problems in the estimation of the a and c parameters. These problems and…