Stephen Olejnik

6.1k total citations · 2 hit papers
83 papers, 4.6k citations indexed

About

Stephen Olejnik is a scholar working on Statistics and Probability, Management Science and Operations Research and Developmental and Educational Psychology. According to data from OpenAlex, Stephen Olejnik has authored 83 papers receiving a total of 4.6k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Statistics and Probability, 22 papers in Management Science and Operations Research and 13 papers in Developmental and Educational Psychology. Recurrent topics in Stephen Olejnik's work include Advanced Statistical Methods and Models (23 papers), Statistical Methods in Clinical Trials (15 papers) and Optimal Experimental Design Methods (13 papers). Stephen Olejnik is often cited by papers focused on Advanced Statistical Methods and Models (23 papers), Statistical Methods in Clinical Trials (15 papers) and Optimal Experimental Design Methods (13 papers). Stephen Olejnik collaborates with scholars based in United States, Taiwan and Canada. Stephen Olejnik's co-authors include James Algina, Carl J. Huberty, James F. Baumann, Edward J. Kameenui, Sherrie L. Nist, H. J. Keselman, Rand R. Wilcox, Rhonda K. Kowalchuk, Jianmin Li and Joel R. Levin and has published in prestigious journals such as Journal of Educational Psychology, Review of Educational Research and American Educational Research Journal.

In The Last Decade

Stephen Olejnik

79 papers receiving 4.1k citations

Hit Papers

align trajectories

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.

Generalized Eta and Omega Squared Statistics: Measures of Effect Size for Some Common Research Designs.

2003 1.2k citations Stephen Olejnik, James Algina Psychological Methods profile →
Measures of Effect Size for Comparative Studies: Applications, Interpretations, and Limitations

2000 537 citations Stephen Olejnik, James Algina Contemporary Educational Psychology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Stephen Olejnik United States	27	854	745	658	587	509	83	4.6k
Carl J. Huberty United States	27	680 0.8×	946 1.3×	287 0.4×	767 1.3×	595 1.2×	79	5.4k
Ronald C. Serlin United States	42	578 0.7×	842 1.1×	770 1.2×	617 1.1×	697 1.4×	129	7.7k
P. R. Freeman United Kingdom	18	390 0.5×	590 0.8×	466 0.7×	343 0.6×	532 1.0×	52	6.0k
Leonard S. Feldt United States	30	646 0.8×	1.1k 1.4×	1.3k 2.0×	388 0.7×	659 1.3×	81	5.7k
Harold D. Delaney United States	34	923 1.1×	741 1.0×	1.1k 1.7×	525 0.9×	1.1k 2.1×	79	8.0k
Shlomo S. Sawilowsky United States	25	299 0.4×	639 0.9×	395 0.6×	472 0.8×	421 0.8×	105	4.5k
Donald W. Zimmerman Canada	30	376 0.4×	739 1.0×	351 0.5×	314 0.5×	331 0.7×	161	3.7k
Leland Wilkinson United States	29	327 0.4×	836 1.1×	330 0.5×	331 0.6×	465 0.9×	75	6.1k
Betsy Jane Becker United States	35	768 0.9×	379 0.5×	387 0.6×	572 1.0×	1.0k 2.0×	93	6.4k
Kenneth D. Hopkins United States	19	748 0.9×	454 0.6×	281 0.4×	1.1k 1.8×	551 1.1×	84	4.2k

Countries citing papers authored by Stephen Olejnik

Since Specialization

Citations

This map shows the geographic impact of Stephen Olejnik'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 Stephen Olejnik with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Stephen Olejnik more than expected).

Fields of papers citing papers by Stephen Olejnik

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Stephen Olejnik. 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 Stephen Olejnik. The network helps show where Stephen Olejnik may publish in the future.

Co-authorship network of co-authors of Stephen Olejnik

This figure shows the co-authorship network connecting the top 25 collaborators of Stephen Olejnik. A scholar is included among the top collaborators of Stephen Olejnik 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 Stephen Olejnik. Stephen Olejnik is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Huberty, Carl J. & Stephen Olejnik. (2005). Applied MANOVA and Discriminant Analysis. Wiley series in probability and statistics. 362 indexed citations

DeJoy, David M., et al.. (2005). Effects of an active ergonomics training program on risk exposure, worker beliefs, and symptoms in computer users. Work. 24(1). 41–52. 63 indexed citations

Olejnik, Stephen & James Algina. (2003). Generalized Eta and Omega Squared Statistics: Measures of Effect Size for Some Common Research Designs.. Psychological Methods. 8(4). 434–447. 1232 indexed citations breakdown →

Hess, Brian, Stephen Olejnik, & Carl J. Huberty. (2001). The Efficacy of two Improvement-Over-Chance Effect Sizes for Two-Group Univariate Comparisons under Variance Heterogeneity and Nonnormality. Educational and Psychological Measurement. 61(6). 909–936. 26 indexed citations

Hess, Brian, Stephen Olejnik, & Carl J. Huberty. (2001). The Efficacy of Two Improvement-Over-Chance Effect Sizes for Two-Group Univariate Comparisons Under Variance Heterogeneity and Nonnormality. Educational and Psychological Measurement. 61(6). 909–909. 1 indexed citations

Olejnik, Stephen, et al.. (2000). Using Wherry's Adjusted R ² and Mallow's C _p for Model Selection From All Possible Regressions. The Journal of Experimental Education. 68(4). 365–380. 35 indexed citations

Olejnik, Stephen & James Algina. (2000). Measures of Effect Size for Comparative Studies: Applications, Interpretations, and Limitations. Contemporary Educational Psychology. 25(3). 241–286. 537 indexed citations breakdown →

Hess, Brian & Stephen Olejnik. (1997). Top Ten Reasons Why Most Omnibus ANOVA F-Tests Should Be Abandoned.. Korean Society for the Study of Vocational Education. 22(4). 9 indexed citations

Olejnik, Stephen, et al.. (1994). Contrast analysis for additive non‐orthogonal two‐factor designs in unequal variance cases. British Journal of Mathematical and Statistical Psychology. 47(2). 337–354. 6 indexed citations

10.

Postaire, J.‐G. & Stephen Olejnik. (1994). A relaxation scheme for improving a convexity based clustering method. Pattern Recognition Letters. 15(12). 1211–1221. 2 indexed citations

11.

Olejnik, Stephen, et al.. (1994). Comment on a Wilcox Test Statistic for Comparing Means When Variances Are Unequal. Journal of Educational Statistics. 19(2). 111–111. 6 indexed citations

12.

Olejnik, Stephen & Carl J. Huberty. (1993). Preliminary Statistical Tests.. 2 indexed citations

13.

Huberty, Carl J. & Stephen Olejnik. (1992). Research news and Comment: Annual Meeting Courtesies: Suggestions for Chairs, Presenters, and Discussants. Educational Researcher. 21(2). 29–30.

14.

Olejnik, Stephen, et al.. (1991). EFFECT OF TREATMENT AND NONCOMPLIANCE ON POST-POLIO SEQUELAE. Orthopedics. 14(11). 1199–1203. 25 indexed citations

15.

Olejnik, Stephen, et al.. (1989). Contrast analysis for scale differences. Communication in Statistics- Theory and Methods. 18(8). 2965–2987. 2 indexed citations

16.

Graham‐Pole, John, Hannelore Wass, Sheila M. Eyberg, Luis Chu, & Stephen Olejnik. (1989). Communicating with dying children and their siblings: A retrospective analysis. Death Studies. 13(5). 465–483. 15 indexed citations

17.

Olejnik, Stephen & James Algina. (1984). Parametric ANCOVA and the Rank Transform ANCOVA When the Data Are Conditionally Non-Normal and Heteroscedastic. Journal of Educational Statistics. 9(2). 129–129. 31 indexed citations

18.

Olejnik, Stephen & James Algina. (1983). Parametric ANCOVA vs. Rank Transform ANCOVA when Assumptions of Conditional Normality and Homoscedasticity Are Violated.. 7 indexed citations

19.

Lee, Robert & Stephen Olejnik. (1981). Professional Outreach Counseling Can Help the Juvenile Probationer: A Two Year Follow‐up Study. The Personnel and Guidance Journal. 59(7). 445–449. 8 indexed citations

20.

Ashton, Patricia T., et al.. (1981). Middle School Organization, Teacher Job Satisfaction, and School Climate. 6(1). 48–57. 3 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.

Explore authors with similar magnitude of impact