Klaas Sijtsma

14.4k total citations · 3 hit papers
191 papers, 10.0k citations indexed

About

Klaas Sijtsma is a scholar working on Management Science and Operations Research, Statistics and Probability and Computer Networks and Communications. According to data from OpenAlex, Klaas Sijtsma has authored 191 papers receiving a total of 10.0k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Management Science and Operations Research, 55 papers in Statistics and Probability and 53 papers in Computer Networks and Communications. Recurrent topics in Klaas Sijtsma's work include Psychometric Methodologies and Testing (83 papers), Advanced Statistical Modeling Techniques (51 papers) and Statistical Methods and Bayesian Inference (25 papers). Klaas Sijtsma is often cited by papers focused on Psychometric Methodologies and Testing (83 papers), Advanced Statistical Modeling Techniques (51 papers) and Statistical Methods and Bayesian Inference (25 papers). Klaas Sijtsma collaborates with scholars based in Netherlands, United States and Japan. Klaas Sijtsma's co-authors include L. Andries van der Ark, Brian W. Junker, Ivo W. Molenaar, Rob R. Meijer, Wilco H. M. Emons, Bas T. Hemker, Coen Bernaards, Joost R. van Ginkel, Peter M. Kruyen and Jeroen K. Vermunt and has published in prestigious journals such as Journal of Personality and Social Psychology, SHILAP Revista de lepidopterología and Computers & Education.

In The Last Decade

Klaas Sijtsma

187 papers receiving 9.3k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

On the Use, the Misuse, and the Very Limited Usefulness of Cronbach’s Alpha

2008 1.9k citations Klaas Sijtsma Psychometrika profile →
Cognitive Assessment Models with Few Assumptions, and Connections with Nonparametric Item Response Theory

2001 692 citations Klaas Sijtsma et al. profile →
Introduction to Nonparametric Item Response Theory

2002 583 citations Klaas Sijtsma et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Klaas Sijtsma Netherlands	50	2.7k	1.8k	1.7k	1.5k	1.4k	191	10.0k
David Thissen United States	62	3.5k 1.3×	2.7k 1.5×	1.9k 1.1×	1.4k 1.0×	1.2k 0.8×	166	13.2k
Alberto Maydeu‐Olivares Spain	50	1.7k 0.6×	2.3k 1.3×	1.4k 0.8×	966 0.7×	1.9k 1.3×	128	8.6k
Tenko Raykov United States	43	1.6k 0.6×	1.9k 1.0×	1.4k 0.8×	1.1k 0.7×	2.1k 1.5×	235	10.1k
Ke‐Hai Yuan United States	44	1.8k 0.6×	1.4k 0.7×	944 0.6×	2.0k 1.3×	1.3k 0.9×	171	8.1k
Roger E. Millsap United States	47	1.5k 0.6×	2.6k 1.4×	1.4k 0.8×	712 0.5×	1.7k 1.2×	117	8.1k
Fritz Drasgow United States	65	3.2k 1.2×	2.2k 1.2×	1.8k 1.1×	1.0k 0.7×	3.0k 2.1×	209	15.1k
Rebecca Zwick United States	27	1.4k 0.5×	1.7k 0.9×	1.2k 0.7×	646 0.4×	1.4k 0.9×	115	6.8k
Benjamin D. Wright United States	40	2.2k 0.8×	1.2k 0.6×	1.1k 0.6×	868 0.6×	1.2k 0.9×	123	10.8k
David Andrich Australia	36	1.8k 0.6×	937 0.5×	828 0.5×	828 0.6×	901 0.6×	100	7.3k
Ronald K. Hambleton United States	48	4.4k 1.6×	2.6k 1.4×	2.1k 1.2×	1.5k 1.0×	2.6k 1.8×	243	15.9k

Countries citing papers authored by Klaas Sijtsma

Since Specialization

Citations

This map shows the geographic impact of Klaas Sijtsma's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Klaas Sijtsma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Klaas Sijtsma more than expected).

Fields of papers citing papers by Klaas Sijtsma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Klaas Sijtsma. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Klaas Sijtsma. The network helps show where Klaas Sijtsma may publish in the future.

Co-authorship network of co-authors of Klaas Sijtsma

This figure shows the co-authorship network connecting the top 25 collaborators of Klaas Sijtsma. A scholar is included among the top collaborators of Klaas Sijtsma based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Klaas Sijtsma. Klaas Sijtsma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ellis, Jules L. & Klaas Sijtsma. (2024). Proof of Reliability Convergence to 1 at Rate of Spearman–Brown Formula for Random Test Forms and Irrespective of Item Pool Dimensionality. Psychometrika. 89(3). 774–795. 3 indexed citations

Ellis, Jules L., et al.. (2024). Reliability Theory for Measurements with Variable Test Length, Illustrated with ERN and Pe Collected in the Flanker Task. Psychometrika. 89(4). 1280–1303. 1 indexed citations

Sijtsma, Klaas, Jules L. Ellis, & Denny Borsboom. (2024). Recognize the Value of the Sum Score, Psychometrics’ Greatest Accomplishment. Psychometrika. 89(1). 84–117. 26 indexed citations

Lang, Kyle M., et al.. (2023). Solving the many-variables problem in MICE with principal component regression. Behavior Research Methods. 56(3). 1715–1737. 12 indexed citations

Aarts, Johanna W. M., et al.. (2023). Is it fun or is it hard? Studying physician-related attributes of shared decision-making by ranking case vignettes. SHILAP Revista de lepidopterología. 3. 100208–100208. 2 indexed citations

Ellis, Jules L. & Klaas Sijtsma. (2023). A Test to Distinguish Monotone Homogeneity from Monotone Multifactor Models. Psychometrika. 88(2). 387–412. 3 indexed citations

Sijtsma, Klaas, et al.. (2022). Measuring cyber secure behavior of elementary and high school students in the Netherlands. Computers & Education. 186. 104536–104536. 17 indexed citations

Sijtsma, Klaas, et al.. (2022). Sparsifying the least-squares approach to PCA: comparison of lasso and cardinality constraint. Advances in Data Analysis and Classification. 17(1). 269–286. 1 indexed citations

Mahajan, Raman, Sakib Burza, L.M. Bouter, et al.. (2020). Standardized Protocol Items Recommendations for Observational Studies (SPIROS) for Observational Study Protocol Reporting Guidelines: Protocol for a Delphi Study. JMIR Research Protocols. 9(10). e17864–e17864. 12 indexed citations

10.

Béguin, Anton A., et al.. (2019). Adaptive Pairwise Comparison for Educational Measurement. Journal of Educational and Behavioral Statistics. 45(3). 316–338. 9 indexed citations

11.

Sijtsma, Klaas, J. André Knottnerus, Peter Van Dael, et al.. (2018). Standardized Protocol Items: Recommendations for Observational Studies (SPIROS). OSF Preprints (OSF Preprints).

12.

Sijtsma, Klaas. (2016). Heeft de psychologie replicatiestudies nodig?: Raadpleeg eerst een methodoloog!. Data Archiving and Networked Services (DANS). 51. 34–41. 1 indexed citations

13.

Kruyen, Peter M., Wilco H. M. Emons, & Klaas Sijtsma. (2013). Shortening the S-STAI: Consequences for research and clinical practice. Journal of Psychosomatic Research. 75(2). 167–172. 26 indexed citations

14.

Evers, Andrea W.M., et al.. (2010). Het COTAN-beoordelingssysteem voor de kwaliteit van tests herzien. UvA-DARE (University of Amsterdam). 45(9). 48–55. 8 indexed citations

15.

Ark, L. Andries van der, Marcel A. Croon, & Klaas Sijtsma. (2007). Mokken Scale Analysis for Dichotomous Items Using Marginal Models. Psychometrika. 73(2). 183–208. 40 indexed citations

16.

Ginkel, Joost R. van, L. Andries van der Ark, & Klaas Sijtsma. (2007). Multiple Imputation of Item Scores in Test and Questionnaire Data, and Influence on Psychometric Results. Multivariate Behavioral Research. 42(2). 387–414. 74 indexed citations

17.

Sijtsma, Klaas & Rob R. Meijer. (2007). Nonparametric item response theory and related topics. Data Archiving and Networked Services (DANS). 719–746. 16 indexed citations

18.

Sijtsma, Klaas & Rob R. Meijer. (2007). Nonparametric item response theory and special topics. Data Archiving and Networked Services (DANS). 719–746. 7 indexed citations

19.

Sijtsma, Klaas. (2005). Nonparametric item response theory. Data Archiving and Networked Services (DANS). 1421–1426. 1 indexed citations

20.

Sijtsma, Klaas. (1999). Review of the book Comparability of test scores for immigrants and majority group members in the Netherlands, J. te Nijenhuis, 1999. International Journal of Selection and Assessment. 7(1). 51–52. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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