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Quantization and Probability Representations Inventory (QuPRI)


The Quantization and Probability Representation Inventory (QuPRI) is designed to assess students’ understanding of the electron structure of the atom, including the representations of the Bohr model, electron cloud model, probability model, boundary surface model, and fundamental chemistry quantum concepts.


QuPRI is commonly administered in introductory chemistry courses (general chemistry, physical chemistry, and biophysical chemistry) and high school chemistry courses. 

Typical Performance

 We have not performed an analysis of the LASSO data for typical performance, but the literature shows that this assessment was administered to first-semester general chemistry (GC) students and physical chemistry (PC)/biophysical chemistry (BPC) students.


QuPRI content validity and accuracy were reviewed by 11 seasoned instructors teaching general chemistry and/or physical chemistry. QuPRI has been researched valid in quantitative and qualitative data. Relevant articles are listed below:

      Roche Allred, Z. D., & Bretz, S. L. (2019). Development of the Quantization and Probability Representations Inventory as a measure of students’ understandings of particulate and symbolic representations of electron structure. Journal of Chemical Education, 96(8), 1558–1570.

       Roche Allred, Z. D. (2019). Investigating students? understandings about the electronic structure of the atom with regards to energy quantization and probability. ProQuest Dissertations Publishing.

      Chia, M., Kartsonaki, E., & Lawrie, G. (2021, September). Investigating students conceptions of science modeling, atomic structure, and bonding models. In Proceedings of The Australian Conference on Science and Mathematics Education (pp. 13-13).


We recommend using Google Scholar and the citations listed under validation to find articles of interest.

Example LASSO Report

Please follow this link to our example report for concept inventories.

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