Showing 1 - 2 of 2 Research Library Publications

Uncovering the Complexity of Item Position Effects in a Low-Stakes Testing Context

Posted: | Thai Q. Ong, Dena A. Pastor

Applied Psychological Measurement: Volume 46, issue 2, page(s) 571-588

 

This study evaluates the degree to which position effects on two separate low-stakes tests administered to two different samples were moderated by different item (item length, number of response options, mental taxation, and graphic) and examinee (effort, change in effort, and gender) variables. Items exhibited significant negative linear position effects on both tests, with the magnitude of the position effects varying from item to item.

Category:Assessment-Oriented Research, Reliability/Validity

One Size Doesn’t Fit All: Using Factor Analysis to Gather Validity Evidence When Using Surveys in Your Research

Posted: | E. Knetka, C. Runyon, S. Eddy

CBE—Life Sciences Education Vol. 18, No. 1

 

This article briefly reviews the aspects of validity that researchers should consider when using surveys. It then focuses on factor analysis, a statistical method that can be used to collect an important type of validity evidence.

Category:Assessment-Oriented Research, Reliability/Validity