Baking the Rasch Model Cake with Associate Professor Michael Carey

Today we're chatting on a topic that's crucial for anyone in the field of education research or anyone curious about quality survey construction and robust survey scale validation. We're talking about Rasch model analysis with Associate Professor Michael Carey. He uses a cake baking metaphor to explain how the Rasch model technique is applied to survey design and validation in plain English. He also refers to some recently published STEM research as examples of how a large 77-item preservice teacher TPACK self-audit instrument was developed and validated: 

Carey, M. D., Martin, D. A., & McMaster, N. (2025). The development and validation of a self-audit survey instrument that evaluates preservice teachers’ confidence to use technologies to support student learning. International Journal of Research & Method in Education, 48(2), 160–182.  https://doi.org/10.1080/1743727X.2024.2341714

Martin, D.A., Carey, M.D., McMaster, N. et al. (2024). Assessing primary school preservice teachers’ confidence to apply their TPACK in specific categories of technologies using a self-audit survey. Aust. Educ. Res. 51, 1877–1905 https://doi.org/10.1007/s13384-023-00669-x

Let us know your thoughts on this episode