• 27412 Citations
1976 …2020

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Article
2020

Assessing heterogeneity and power in replications of psychological experiments

Schauer, J. M. & Hedges, L. V., Aug 2020, In : Psychological bulletin. 146, 8, p. 701-719 19 p.

Research output: Contribution to journalArticle

Investigating immediacy in multiple-phase-change single-case experimental designs using a Bayesian unknown change-points model

Natesan Batley, P., Minka, T. & Hedges, L. V., Aug 1 2020, In : Behavior Research Methods. 52, 4, p. 1714-1728 15 p.

Research output: Contribution to journalArticle

1 Scopus citations

Reconsidering Statistical Methods for Assessing Replication

Schauer, J. M. & Hedges, L. V., 2020, (Accepted/In press) In : Psychological methods.

Research output: Contribution to journalArticle

The effects of downstream clustering in longitudinal studies

Chan, W., Hedges, L. V. & Hedberg, E. C., 2020, In : Journal of Experimental Education. p. 1-29 29 p.

Research output: Contribution to journalArticle

2019

More Than One Replication Study Is Needed for Unambiguous Tests of Replication

Hedges, L. V. & Schauer, J. M., Oct 1 2019, In : Journal of Educational and Behavioral Statistics. 44, 5, p. 543-570 28 p.

Research output: Contribution to journalArticle

2 Scopus citations
2018

Challenges in Building Usable Knowledge in Education

Hedges, L. V., Jan 2 2018, In : Journal of Research on Educational Effectiveness. 11, 1, p. 1-21 21 p.

Research output: Contribution to journalArticle

17 Scopus citations

CONSORT-SPI 2018 Explanation and Elaboration: Guidance for reporting social and psychological intervention trials

on behalf of the CONSORT-SPI Group, Jul 31 2018, In : Trials. 19, 1, 406.

Research output: Contribution to journalArticle

24 Scopus citations
1 Scopus citations

Randomised trials in education in the USA

Hedges, L. V. & Schauer, J., Jul 3 2018, In : Educational Research. 60, 3, p. 265-275 11 p.

Research output: Contribution to journalArticle

2 Scopus citations

Reporting randomised trials of social and psychological interventions: The CONSORT-SPI 2018 Extension

on behalf of the CONSORT-SPI Group, Jul 31 2018, In : Trials. 19, 1, 407.

Research output: Contribution to journalArticle

31 Scopus citations

Statistical Analyses for Studying Replication: Meta-Analytic Perspectives

Hedges, L. V. & Schauer, J. M., Aug 2 2018, (Accepted/In press) In : Psychological methods.

Research output: Contribution to journalArticle

10 Scopus citations
2017

Basics of meta-analysis: I2 is not an absolute measure of heterogeneity

Borenstein, M., Higgins, J. P. T., Hedges, L. V. & Rothstein, H. R., Mar 1 2017, In : Research synthesis methods. 8, 1, p. 5-18 14 p.

Research output: Contribution to journalArticle

324 Scopus citations

Bayesian Unknown Change-Point Models to Investigate Immediacy in Single Case Designs

Natesan, P. & Hedges, L. V., Dec 2017, In : Psychological methods. 22, 4, p. 743-759 17 p.

Research output: Contribution to journalArticle

9 Scopus citations

Implications of Small Samples for Generalization: Adjustments and Rules of Thumb

Tipton, E., Hallberg, K., Hedges, L. V. & Chan, W., Oct 1 2017, In : Evaluation Review. 41, 5, p. 472-505 34 p.

Research output: Contribution to journalArticle

17 Scopus citations

The American Psychological Association Task Force assessment of violent video games: Science in the service of public interest

Calvert, S. L., Appelbaum, M., Dodge, K. A., Graham, S., Nagayama Hall, G. C., Hamby, S., Fasig-Caldwell, L. G., Citkowicz, M., Galloway, D. P. & Hedges, L. V., Feb 1 2017, In : American Psychologist. 72, 2, p. 126-143 18 p.

Research output: Contribution to journalArticle

32 Scopus citations
2016

Development of the flexibility in duty hour requirements for surgical trainees (FIRST) trial protocol a national cluster-randomized trial of resident duty hour policies

Bilimoria, K. Y., Chung, J. W., Hedges, L. V., Dahlke, A. R., Love, R., Cohen, M. E., Tarpley, J., Mellinger, J., Mahvi, D. M., Kelz, R. R., Ko, C. Y., Hoyt, D. B. & Lewis, F. H., Mar 2016, In : JAMA surgery. 151, 3, p. 273-281 9 p.

Research output: Contribution to journalArticle

42 Scopus citations

National cluster-randomized trial of duty-hour flexibility in surgical training

Bilimoria, K. Y., Chung, J. W., Hedges, L. V., Dahlke, A. R., Love, R., Cohen, M. E., Hoyt, D. B., Yang, A. D., Tarpley, J. L., Mellinger, J. D., Mahvi, D. M., Kelz, R. R., Ko, C. Y., Odell, D. D., Stulberg, J. J. & Lewis, F. R., Feb 25 2016, In : New England Journal of Medicine. 374, 8, p. 713-727 15 p.

Research output: Contribution to journalArticle

198 Scopus citations

Overlap between treatment and control distributions as an effect size measure in experiments

Hedges, L. V. & Olkin, I., Mar 1 2016, In : Psychological Methods. 21, 1, p. 61-68 8 p.

Research output: Contribution to journalArticle

4 Scopus citations

The Question of School Resources and Student Achievement: A History and Reconsideration

Hedges, L. V., Pigott, T. D., Polanin, J. R., Ryan, A. M., Tocci, C. & Williams, R. T., Mar 1 2016, In : Review of Research in Education. 40, 1, p. 143-168 26 p.

Research output: Contribution to journalArticle

4 Scopus citations
2014

A d-statistic for single-case designs that is equivalent to the usual between-groups d-statistic

Shadish, W. R., Hedges, L. V., Pustejovsky, J. E., Boyajian, J. G., Sullivan, K. J., Andrade, A. & Barrientos, J. L., 2014, In : Neuropsychological rehabilitation. 24, 3-4, p. 528-553 26 p.

Research output: Contribution to journalArticle

28 Scopus citations

Analysis and meta-analysis of single-case designs with a standardized mean difference statistic: A primer and applications

Shadish, W. R., Hedges, L. V. & Pustejovsky, J. E., Apr 1 2014, In : Journal of School Psychology. 52, 2, p. 123-147 25 p.

Research output: Contribution to journalArticle

106 Scopus citations

Conditional Optimal Design in Three- and Four-Level Experiments

Hedges, L. V. & Borenstein, M., Jan 1 2014, In : Journal of Educational and Behavioral Statistics. 39, 4, p. 257-281 25 p.

Research output: Contribution to journalArticle

12 Scopus citations

Design-Comparable effect sizes in multiple baseline designs: A general modeling framework

Pustejovsky, J. E., Hedges, L. V. & Shadish, W. R., Oct 13 2014, In : Journal of Educational and Behavioral Statistics. 39, 5, p. 368-393 26 p.

Research output: Contribution to journalArticle

43 Scopus citations

Estimating effect size when there is clustering in one treatment group

Hedges, L. V. & Citkowicz, M., Nov 26 2014, In : Behavior Research Methods. 47, 4, p. 1295-1308 14 p.

Research output: Contribution to journalArticle

10 Scopus citations

Generalizing from unrepresentative experiments: A stratified propensity score approach

O'Muircheartaigh, C. & Hedges, L. V., Feb 1 2014, In : Journal of the Royal Statistical Society. Series C: Applied Statistics. 63, 2, p. 195-210 16 p.

Research output: Contribution to journalArticle

40 Scopus citations

New evidence about language and cognitive development based on a longitudinal study: Hypotheses for intervention

Goldin-Meadow, S., Levine, S. C., Hedges, L. V., Huttenlocher, J., Raudenbush, S. W. & Small, S. L., 2014, In : American Psychologist. 69, 6, p. 588-599 12 p.

Research output: Contribution to journalArticle

52 Scopus citations

Sample Selection in Randomized Experiments: A New Method Using Propensity Score Stratified Sampling

Tipton, E., Hedges, L. V., Vaden-Kiernan, M., Borman, G., Sullivan, K. & Caverly, S., Jan 1 2014, In : Journal of Research on Educational Effectiveness. 7, 1, p. 114-135 22 p.

Research output: Contribution to journalArticle

31 Scopus citations

Understanding Statistical Power in Cluster Randomized Trials: Challenges Posed by Differences in Notation and Terminology

Spybrook, J., Hedges, L. & Borenstein, M., Oct 15 2014, In : Journal of Research on Educational Effectiveness. 7, 4, p. 384-406 23 p.

Research output: Contribution to journalArticle

5 Scopus citations
2013

A standardized mean difference effect size for multiple baseline designs across individuals

Hedges, L. V., Pustejovsky, J. E. & Shadish, W. R., Dec 1 2013, In : Research synthesis methods. 4, 4, p. 324-341 18 p.

Research output: Contribution to journalArticle

87 Scopus citations

Bayesian estimates of autocorrelations in single-case designs

Shadish, W. R., Rindskopf, D. M., Hedges, L. V. & Sullivan, K. J., Sep 1 2013, In : Behavior Research Methods. 45, 3, p. 813-821 9 p.

Research output: Contribution to journalArticle

19 Scopus citations
24 Scopus citations

Recommendations for Practice: Justifying Claims of Generalizability

Hedges, L. V., Sep 1 2013, In : Educational Psychology Review. 25, 3, p. 331-337 7 p.

Research output: Contribution to journalArticle

11 Scopus citations
2012

The Variance of Intraclass Correlations in Three- and Four-Level Models

Hedges, L. V., Hedberg, E. C. C. & Kuyper, A. M., Dec 2012, In : Educational and Psychological Measurement. 72, 6, p. 893-909 17 p.

Research output: Contribution to journalArticle

15 Scopus citations
2011

Correcting an analysis of variance for clustering

Hedges, L. V. & Rhoads, C. H., Feb 1 2011, In : British Journal of Mathematical and Statistical Psychology. 64, 1, p. 20-37 18 p.

Research output: Contribution to journalArticle

11 Scopus citations

Effect sizes in three-level cluster-randomized experiments

Hedges, L. V., Jun 2011, In : Journal of Educational and Behavioral Statistics. 36, 3, p. 346-380 35 p.

Research output: Contribution to journalArticle

24 Scopus citations
2010

A basic introduction to fixed-effect and random-effects models for meta-analysis

Borenstein, M., hedges, L. V., Higgins, J. PT. & Rothstein, H. R., 2010, In : Research Synthesis Methods. 1, p. 97-111

Research output: Contribution to journalArticle

Category effects on stimulus estimation: Shifting and skewed frequency distributions

Duffy, S., Huttenlocher, J., Hedges, L. V. & Crawford, L. E., Apr 1 2010, In : Psychonomic Bulletin and Review. 17, 2, p. 224-230 7 p.

Research output: Contribution to journalArticle

24 Scopus citations

Robust variance estimation in meta-regression with dependent effect size estimates

Hedges, L. V., Tipton, E. & Johnson, M. C., 2010, In : Research Synthesis Methods. 1, p. 39-65

Research output: Contribution to journalArticle

548 Scopus citations

Sources of variability in children's language growth

Huttenlocher, J., Waterfall, H., Vasilyeva, M., Vevea, J. & Hedges, L. V., Dec 1 2010, In : Cognitive Psychology. 61, 4, p. 343-365 23 p.

Research output: Contribution to journalArticle

314 Scopus citations
2009
7 Scopus citations
2008

Editors’ comment

Foorman, B. R. & Hedges, L. V., Jan 1 2008, In : Journal of Research on Educational Effectiveness. 1, 1, 1 p.

Research output: Contribution to journalArticle

1 Scopus citations

How large an effect can we expect from school reforms?

Konstantopoulos, S. & Hedges, L. V., Aug 1 2008, In : Teachers College Record. 110, 8, p. 1611-1638 28 p.

Research output: Contribution to journalArticle

32 Scopus citations

The state of the science in the meta-analysis of single-case experimental designs

Shadish, W. R., Rindskopf, D. M. & Hedges, L. V., Nov 27 2008, In : Evidence-Based Communication Assessment and Intervention. 2, 3, p. 188-196 9 p.

Research output: Contribution to journalArticle

105 Scopus citations

What are effect sizes and why do we need them?

Hedges, L. V., Dec 1 2008, In : Child Development Perspectives. 2, 3, p. 167-171 5 p.

Research output: Contribution to journalArticle

55 Scopus citations
2007

Correcting a significance test for clustering

Hedges, L. V., Jun 1 2007, In : Journal of Educational and Behavioral Statistics. 32, 2, p. 151-179 29 p.

Research output: Contribution to journalArticle

58 Scopus citations

Effect sizes in cluster-randomized designs

Hedges, L. V., Dec 1 2007, In : Journal of Educational and Behavioral Statistics. 32, 4, p. 341-370 30 p.

Research output: Contribution to journalArticle

215 Scopus citations

Estimating Stimuli From Contrasting Categories: Truncation Due to Boundaries

Huttenlocher, J., Hedges, L. V., Lourenco, S. F., Crawford, L. E. & Corrigan, B., Aug 1 2007, In : Journal of Experimental Psychology: General. 136, 3, p. 502-519 18 p.

Research output: Contribution to journalArticle

15 Scopus citations

Intraclass Correlations for Planning Group Randomized Experiments in Rural Education

Hedges, L. V. & Hedberg, E. C., Aug 2007, In : Journal of Research in Rural Education. 22, p. 1-15

Research output: Contribution to journalArticle

Intraclass correlation values for planning group-randomized trials in education

Hedges, L. V. & Hedberg, E. C., Mar 2007, In : Educational Evaluation and Policy Analysis. 29, 1, p. 60-87 28 p.

Research output: Contribution to journalArticle

401 Scopus citations