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Results: 10
Number of items: 10
  • Open Access
    van der Ark, L. A., Bergsma, W. P., & Koopman, L. (2023). Maximum augmented empirical likelihood estimation of categorical marginal models for large sparse contingency tables. Psychometrika, 88(4), 1228–1248. https://doi.org/10.1007/s11336-023-09932-7
  • Open Access
    Koopman, L., Zijlstra, B. J. H., & Van der Ark, L. A. (2023). Evaluating model fit in two-level Mokken scale analysis. Psych, 5(3), 847-865. https://doi.org/10.3390/psych5030056
  • Open Access
    Koopman, L. (2022). Nonparametric item response theory for multilevel test data. [Thesis, fully internal, Universiteit van Amsterdam].
  • Open Access
    Koopman, L., Zijlstra, B. J. H., & van der Ark, L. A. (2022). A two-step, test-guided Mokken scale analysis, for nonclustered and clustered data. Quality of Life Research, 31(1), 25-36. https://doi.org/10.1007/s11136-021-02840-2
  • Open Access
    Koopman, L., Zijlstra, B. J. H., & van der Ark, L. A. (2021). Range-preserving confidence intervals and significance tests for scalability coefficients in Mokken scale analysis. In M. Wiberg, D. Molenaar, J. González, U. Böckenholt, & J.-S. Kim (Eds.), Quantitative Psychology: The 85th Annual Meeting of the Psychometric Society, Virtual (pp. 175-185). ( Springer Proceedings in Mathematics & Statistics; Vol. 353). Springer. https://doi.org/10.1007/978-3-030-74772-5_16
  • Open Access
    Koopman, L., Zijlstra, B. J. H., & Andries van der Ark, L. (2020). Standard errors of two-level scalability coefficients. British Journal of Mathematical & Statistical Psychology, 73(2), 213-236. https://doi.org/10.1111/bmsp.12174
  • Open Access
    Koopman, L., Zijlstra, B. J. H., de Rooij, M., & van der Ark, L. A. (2020). Bias of two-level scalability coefficients and their standard errors. Applied Psychological Measurement, 44(3), 197-214. https://doi.org/10.1177/0146621619843821
  • van der Ark, L. A., Korf, W., Peters, P., Chen, M., ten Hove, D., & Koopman, L. (2019). Onderzoek naar de verbetering van tests en vragenlijsten voor de pedagogische praktijk. In W. de Jong, J. Bekker, H. de Deckere, I. Schonewille, & L. van der Poel (Eds.), De belofte van de jeugd?!: Pedagogiek in de 21e eeuw (pp. 81-92). Uitgeverij SWP.
  • Open Access
    Fukkink, R., Jilink, L., Op den Kelder, R., Zeijlmans, K., Bollen, I., & Koopman, L. (2019). The development of interaction skills in preservice teacher education: A mixed-methods study of Dutch pre-service teachers. Early Childhood Education Journal, 47(3), 321-329. https://doi.org/10.1007/s10643-019-00927-7
  • Open Access
    Koopman, L., Zijlstra, B. J. H., & van der Ark, L. A. (2017). Weighted Guttman errors: Handling ties and two-level data. In L. A. van der Ark, M. Wiberg, S. A. Culpepper, J. A. Douglas, & W.-C. Wang (Eds.), Quantitative psychology: The 81st Annual Meeting of the Psychometric Society, Asheville, North Carolina, 2016 (pp. 183-190). (Springer Proceedings in Mathematics & Statistics; Vol. 196). Springer. https://doi.org/10.1007/978-3-319-56294-0_17
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