Virtual On line
June 22, 2020
June 22, 2020
June 26, 2021
Design in Engineering Education
Mental models of engineering systems contain information about the components, connections, inputs/outputs, and function of a system. It is difficult to study mental models because any mental model elicitation method inherently only provides a representation of the mental model and not a realization of the mental model itself. In order to measure engineering students’ systems understanding, a mental model instrument with accompanying scoring rubrics have been developed and deployed in undergraduate and graduate engineering classrooms in previous work. The research presented in this paper explores validation of this mental model elicitation approach through two control groups involving the collection of pre- and post- mental model data without intervention, whereas previous research included a functional modeling intervention. Results from the control groups are discussed and compared to previous results that had an intervention to show whether or not learning effects take place. In addition, this work considers the addition of an explanatory example showing exactly how to complete the given tasks, where one control group is given the example and the other is not. Results show whether or not the example should be provided in future deployments of the mental model instrument and provides insight into how an included example might have affected past results and how it could affect future results. This work serves as a first step towards validation of this new mental model elicitation method, is in contribution to ongoing research on mental models of engineering systems, and will inform future research that utilizes this approach. As we continue to explore how students learn about engineering, it is important that educators and researchers have a way to reliably measure student understanding of various engineering systems while they complete their undergraduate and graduate degree programs.
Murphy, A. R., & Banks, H. D., & Bohm, M. R., & Nagel, R. L., & Linsey, J. S. (2020, June), Validation of a Mental Model Elicitation Instrument through Deployment of Control Groups in an Undergraduate Engineering Program Paper presented at 2020 ASEE Virtual Annual Conference Content Access, Virtual On line . 10.18260/1-2--35481
ASEE holds the copyright on this document. It may be read by the public free of charge. Authors may archive their work on personal websites or in institutional repositories with the following citation: © 2020 American Society for Engineering Education. Other scholars may excerpt or quote from these materials with the same citation. When excerpting or quoting from Conference Proceedings, authors should, in addition to noting the ASEE copyright, list all the original authors and their institutions and name the host city of the conference. - Last updated April 1, 2015