Model-based reliability and validity of measurement models using structural equation modeling

Reliability of a measurement tool is the degree to which an assessment tool produces stable and consistent results while validity refers to how well a test measures what it is purported to measure. This research provides important new applications of model-based reliability and validity in bifactor and reflective-formative measurement models, using structural equation modelling. In addition the application of Bentler’s covariate-dependent reliability for reliability assessments and demonstrating common method bias are demonstrated for the first time. This thesis has demonstrated the need for careful identification of the nature of constructs in measurements tools. The findings of this thesis has great contribution to the literature in this area.