911吃瓜

PhD, Quantitative Methodology, Measurement, and Evaluation program, Educational Psychology, University of Illinois at Urbana-Champaign

MS, Statistics, University of Illinois at Urbana-Champaign

MA, Mathematics in Teaching, University of Northern Colorado

BS, Mathematics, National Taiwan Normal University

While research on 鈥渂ig data鈥� in educational measurement is thriving, Professor Chiu focused on 鈥渟mall data.鈥� She is well recognized for her award-winning research on the advancement of educational assessments for the classroom that permit monitoring teaching and learning in real-time. Dr. Chiu has made groundbreaking contributions to the field of nonparametric cognitive diagnosis in developing its theory and implementing innovative algorithms for STEM assessments.

* indicates a current or former student co-author

Wang, Y.* & Chiu, C.-Y. (online first). Q-matrix completeness for multiple-choice items in cognitive diagnosis. Psychometrika.

Kim, H.*, Köhn, H. F., & Chiu, C.-Y. (Online first). Identifiability Conditions in Cognitive Diagnosis: Implications for Q-matrix Estimation Algorithms.  British Journal of Mathematical and Statistical Psychology.

Nájera, P., Sorrel, M., Chiu, C.-Y., & Abad, F. (2026). Variable-Length Cognitive Diagnostic Computerized Adaptive Testing in Small-Scale Assessments. Journal of Educational and Behavioral Statistics, 55(4), 908-937.

Oh, H.* & Chiu, C.-Y. (2026). To use or not to use: Method selections in cognitive diagnosis. Measurement: Interdisciplinary Research and Perspectives, 24(2), 138-163.

Chiu, C.-Y., Köhn, H. F. & Wang, Y.* (2026). Plausible and proper multiple-choice items for diagnostic classification. Psychometrika, 91(1), 177-198.

Wang, Y.*, Chiu, C.-Y., & Köhn, H. F. (2025). Nonparametric CD-CAT for multiple-choice items: Item selection method and Q-optimality. British Journal of Mathematical and Statistical Psychology, 78(1), 61-83.

Köhn, H. F., Chiu, C.-Y., Oluwalana, O.*, Kim, H.*, & Wang, J.* (2024). A two-step Q-matrix estimation method, Applied Psychological Measurement, 49(1-2), 3-28.

Nájera, P.*, Abad, F., Chiu, C.-Y., & Sorrel, M. (2023). The restricted DINA model: A comprehensive cognitive diagnostic model for classroom-level assessments. Journal of Educational and Behavioral Statistics, 48(6), 719-749.

Chiu, C.-Y., Köhn, H. F., & Ma, W. (2023). Commentary on “Extending the basic local independence model to polytomous data” by Stefanutti, de Chiusole, Anselmi and Spoto. Psychometrika, 88(2), 656-671.

Wang, Y.*, Chiu, C.-Y., & Köhn, H. F. (2023). Nonparametric classification method for multiple-choice items in cognitive diagnosis. Journal of Educational and Behavioral Statistics, 48(2), 189-219.

Chiu, C.-Y., & Chang, Y.-P.* (2021). Advances in CD-CAT: The general nonparametric item selection method. Psychometrika, 86(4), 1039-1057.

Köhn, H.-F., & Chiu, C.-Y. (2021). A unified theory of the completeness of Q-matrices for the DINA model. Journal of Classification, 38(3), 500-518.

Köhn, H.-F., & Chiu, C.-Y. (2019). Attribute hierarchy models in cognitive diagnosis: Identifiability of the latent attribute space and conditions for completeness of the Q-matrix. Journal of Classification, 36(3), 541-565.

Chang, Y.-P.*, Chiu, C.-Y., & Tsai, R.-C. (2019). Nonparametric CAT for CD in educational settings with small samples. Applied Psychological Measurement, 43(7), 543-561.

Chiu, C.-Y., & Köhn, H.-F. (2019). Consistency theory for the general nonparametric classification method. Psychometrika, 84(3), 830-845.

Köhn, H.-F., & Chiu, C.-Y. (2018). How to build a complete Q-matrix for a cognitively diagnostic test. Journal of Classification, 35(2), 273-299.

Chiu, C.-Y., Sun, Y.*, & Bian, Y.* (2018). Cognitive diagnosis for small educational programs: The general nonparametric classification method, Psychometrika, 83(2), 355-375.