| Investigating an invariant item ordering for polytomously scored items R Ligtvoet, LA Van der Ark, JM Te Marvelde, K Sijtsma Educational and Psychological Measurement 70 (4), 578-595, 2010 | 168 | 2010 |
| Effects of opportunities to learn in teacher preparation on future teachers’ general pedagogical knowledge: Analyzing program characteristics and outcomes J König, R Ligtvoet, S Klemenz, M Rothland Studies in Educational Evaluation 53, 122-133, 2017 | 134 | 2017 |
| Der Einsatz von Unterrichtsvideos in der universitären Ausbildung: Zur Wirksamkeit video-und transkriptgestützter Seminare zur Klassenführung auf pädagogisches Wissen und … C Kramer, J König, G Kaiser, R Ligtvoet, S Blömeke Zeitschrift für Erziehungswissenschaft 20, 137-164, 2017 | 94 | 2017 |
| Polytomous latent scales for the investigation of the ordering of items R Ligtvoet, LA Van der Ark, WP Bergsma, K Sijtsma Psychometrika 76, 200-216, 2011 | 57 | 2011 |
| Measurement bias detection through factor analysis MT Barendse, FJ Oort, CS Werner, R Ligtvoet, K Schermelleh-Engel Structural Equation Modeling: A Multidisciplinary Journal 19 (4), 561-579, 2012 | 40 | 2012 |
| Das Praxissemester als Lerngelegenheit: Modellierung lernprozessbezogener Tätigkeiten und ihrer Bedingungsfaktoren im Spannungsfeld zwischen Universität und Schulpraxis J König, K Darge, C Kramer, R Ligtvoet, M Lünnemann, AM Podlecki, ... Learning to Practice, Learning to Reflect? Ergebnisse aus der …, 2018 | 38 | 2018 |
| Effect of a school library on the reading attitude and reading behaviour in non-western migrant students E Kleijnen, F Huysmans, R Ligtvoet, E Elbers Journal of Librarianship and Information Science 49 (3), 269-286, 2017 | 28 | 2017 |
| Voices of children from around the globe; An international analysis of children's issues at child helplines RG Fukkink, S Bruns, R Ligtvoet Children & Society 30 (6), 510-519, 2016 | 21 | 2016 |
| Die Freude an der Schulpraxis: Zur differenziellen Veränderung eines emotionalen Merkmals von Lehramtsstudierenden während des Praxissemesters K Darge, R Valtin, C Kramer, R Ligtvoet, J König Learning to Practice, Learning to Reflect? Ergebnisse aus der …, 2018 | 17 | 2018 |
| Latent class models for testing monotonicity and invariant item ordering for polytomous items R Ligtvoet, JK Vermunt British Journal of Mathematical and Statistical Psychology 65 (2), 237-250, 2012 | 16 | 2012 |
| Essays on invariant item ordering R Ligtvoet | 13 | 2010 |
| An isotonic partial credit model for ordering subjects on the basis of their sum scores R Ligtvoet Psychometrika 77 (3), 479-494, 2012 | 11 | 2012 |
| Tislelizumab plus zanubrutinib for Richter transformation: the phase 2 RT1 trial O Al-Sawaf, R Ligtvoet, S Robrecht, J Stumpf, AM Fink, E Tausch, ... Nature Medicine 30 (1), 240-248, 2024 | 5* | 2024 |
| A test for using the sum score to obtain a stochastic ordering of subjects R Ligtvoet Journal of Multivariate Analysis 133, 136-139, 2015 | 5 | 2015 |
| Incomplete tests of conditional association for the assessment of model assumptions R Ligtvoet psychometrika 87 (4), 1214-1237, 2022 | 4 | 2022 |
| Selection of Alzheimer symptom items with manifest monotonicity and manifest invariant item ordering R Ligtvoet, LA van der Ark, K Sijtsma New trends in psychometrics, 235-532, 2008 | 4 | 2008 |
| Exact one-sided Bayes factors for 2 by 2 contingency tables R Ligtvoet Journal of Classification 34, 465-472, 2017 | 2 | 2017 |
| Discontinued knowledge growth: on the development of teachers’ general pedagogical knowledge at the transition from higher education into teaching practice J König, R Ligtvoet, S Klemenz, M Rothland Teachers and Teaching, 1-19, 2024 | 1 | 2024 |
| The Sum Scores and Discretization of Variables Under the Linear Normal One-Factor Model R Ligtvoet The Annual Meeting of the Psychometric Society, 227-235, 2021 | 1 | 2021 |
| Model fit after pairwise maximum likelihood MT Barendse, R Ligtvoet, ME Timmerman, FJ Oort Frontiers in Psychology 7, 179618, 2016 | 1 | 2016 |
Johannes KönigProfessor for Empirical School Research, University of CologneVerified email at uni-koeln.de
