Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory
There have been myriad conceptual inventories developed and used by the physics education research community (e.g., FCI, FMCE, BEMA, CSEM). However, continued examination of the psychometric properties of these inventories is important for improving inventory development and usage practices. In this study, we investigate the dimensionality of the Energy and Momentum Conceptual Survey (EMCS) test items and explore the structure of students' understanding of these concepts (i.e., whether the student response data showed multiple distinct test traits). To investigate the psychometric properties of this survey, we surveyed a sample of 253 students participated in the pretest and 201 students for the posttest assessments. Statistical analyses, guided by Item Response Theory (IRT), were conducted using R software. The results of Bootstrap modified parallel analysis tests (BMPAT) revealed significant differences between unidimensional models and the actual data, indicating the presence of multidimensionality (i.e., dimensions correspond to the
physics concepts/abilities being tested) in the EMCS test items. Exploratory analyses suggested that a 2 or 3-dimensional model best fits the data. However, categorizing items based on designated concepts did not improve the model fit. The findings imply that students may interpret the items differently than intended by the test designers.
Physics Education Research Conference 2023
Part of the PER Conference series Sacramento, CA: July 19-20, 2023 Pages 397-402
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![]() <a href="https://www.compadre.org/portal/items/detail.cfm?ID=16616">Wu, X, M. Guthrie, E. Scanlon, and Y. Li. "Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory." Paper presented at the Physics Education Research Conference 2023, Sacramento, CA, July 19-20, 2023.</a>
![]() X. Wu, M. Guthrie, E. Scanlon, and Y. Li, , presented at the Physics Education Research Conference 2023, Sacramento, CA, 2023, WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796).
![]() X. Wu, M. Guthrie, E. Scanlon, and Y. Li, Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory, presented at the Physics Education Research Conference 2023, Sacramento, CA, 2023, <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796>.
![]() Wu, X., Guthrie, M., Scanlon, E., & Li, Y. (2023, July 19-20). Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory. Paper presented at Physics Education Research Conference 2023, Sacramento, CA. Retrieved February 15, 2025, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796
![]() Wu, X, M. Guthrie, E. Scanlon, and Y. Li. "Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory." Paper presented at the Physics Education Research Conference 2023, Sacramento, CA, July 19-20, 2023. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796 (accessed 15 February 2025).
![]() Wu, Xian, Matthew W. Guthrie, Erin Scanlon, and Yaoguang Li. "Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory." Physics Education Research Conference 2023. Sacramento, CA: 2023. 397-402 of PER Conference. 15 Feb. 2025 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796>.
![]() @inproceedings{
Author = "Xian Wu and Matthew W. Guthrie and Erin Scanlon and Yaoguang Li",
Title = {Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory},
BookTitle = {Physics Education Research Conference 2023},
Pages = {397-402},
Address = {Sacramento, CA},
Series = {PER Conference},
Month = {July 19-20},
Year = {2023}
}
![]() %A Xian Wu %A Matthew W. Guthrie %A Erin Scanlon %A Yaoguang Li %T Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory %S PER Conference %D July 19-20 2023 %P 397-402 %C Sacramento, CA %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796 %O Physics Education Research Conference 2023 %O July 19-20 %O application/pdf ![]() %0 Conference Proceedings %A Wu, Xian %A Guthrie, Matthew W. %A Scanlon, Erin %A Li, Yaoguang %D July 19-20 2023 %T Analyzing the dimensionality of the Energy and Momentum Conceptual Survey using Item Response Theory %B Physics Education Research Conference 2023 %C Sacramento, CA %P 397-402 %S PER Conference %8 July 19-20 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=16616&DocID=5796 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
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