Abstract
Differential Bundle Functioning (DBF) occurs when examinees with the same ability but from different groups have separate chances of answering groups of items correctly. DBF undermines the validity of the instrument if inadequately considered. This study explores Exploratory Structural Equation Modeling (ESEM) which permits cross-loading of items that are not permitted in other models. Ex-post-facto research design was adopted with the use of secondary data while six bundles were generated via the specification table. The population for the study comprised all 1,034,629 Senior School three students. A total of 815,104 students were selected using sample random technique. The instrument for the study was 2017 NECO Mathematics paper three with a Cronbach’s alpha of 0.82 and data was analysed using Mplus7.4. The results revealed that the 2017 NECO Mathematics is multidimensional in nature and items in the bundles possess construct validity as they functioned differentially to examinees’ sex and school type. We recommend ESEM has a better approach to examine DBF on 2017 NECO Mathematics test items.
Presenters
Oluwaseyi OpesemowoLecturer II, Department of Educational Foundations, Ajayi Crowther University, Oyo, Nigeria, Oyo, Nigeria
Details
Presentation Type
Paper Presentation in a Themed Session
Theme
KEYWORDS
DIFFERENTIAL BUNDLE FUNCTIONING, EXPLORATORY STRUCTURAL EQUATION MODELLING, NATIONAL EXAMINATIONS COUNCIL
