All Stories

  1. The Critical Challenge of using Large-Scale Digital Experiment Platforms for Scientific Discovery

    Article • MIS Quarterly, March 2025, MIS Quarterly

    Ken Kelley

  2. A sequential approach for noninferiority or equivalence of a linear contrast under cost constraints.

    Article • Psychological Methods, May 2023, American Psychological Association (APA)

    Ken Kelley

  3. Examining User Heterogeneity in Digital Experiments

    Article • ACM Transactions on Information Systems, January 2023, ACM (Association for Computing Machinery)

    Ken Kelley, Sriram Somanchi, Ahmed Abbasi

  4. Sample size planning for replication studies: The devil is in the design.

    Article • Psychological Methods, July 2022, American Psychological Association (APA)

    Ken Kelley

  5. Improved inference in mediation analysis: Introducing the model-based constrained optimization procedure.

    Article • Psychological Methods, August 2020, American Psychological Association (APA)

    Ken Kelley

  6. Multilevel Modeling Using R

    Article • July 2019, Taylor & Francis

    Ken Kelley

  7. Indirect Effects in Sequential Mediation Models: Evaluating Methods for Hypothesis Testing and Confidence Interval Formation

    Article • Multivariate Behavioral Research, June 2019, Taylor & Francis

    Ken Kelley

  8. Common language effect size for correlations

    Article • The Journal of General Psychology, March 2019, Taylor & Francis

    Ken Kelley

  9. Sequential accuracy in parameter estimation for population correlation coefficients.

    Article • Psychological Methods, March 2019, American Psychological Association (APA)

    Ken Kelley, Bhargab Chattopadhyay

  10. Fixed effects models versus mixed effects models for clustered data: Reviewing the approaches, disentangling the differences, and making recommendations.

    Article • Psychological Methods, June 2018, American Psychological Association (APA)

    Ken Kelley

  11. A novel measure of effect size for mediation analysis.

    Article • Psychological Methods, June 2018, American Psychological Association (APA)

    Ken Kelley

  12. Accuracy in parameter estimation for a general class of effect sizes: A sequential approach.

    Article • Psychological Methods, June 2018, American Psychological Association (APA)

    Ken Kelley

  13. Big data in psychology: A framework for research advancement.

    Article • American Psychologist, February 2018, American Psychological Association (APA)

    Idris Adjerid, Ken Kelley

  14. Antecedents of Information Systems Sourcing Strategies in U.S. Hospitals: A Longitudinal Study1

    Article • MIS Quarterly, December 2017, MIS Quarterly

    Ken Kelley

  15. Sample-Size Planning for More Accurate Statistical Power: A Method Adjusting Sample Effect Sizes for Publication Bias and Uncertainty

    Article • Psychological Science, September 2017, SAGE Publications

    Ken Kelley

  16. Designing Experiments and Analyzing Data

    Article • September 2017, Taylor & Francis

    Ken Kelley

  17. Estimating the standardized mean difference with minimum risk: Maximizing accuracy and minimizing cost with sequential estimation.

    Article • Psychological Methods, January 2017, American Psychological Association (APA)

    Ken Kelley

  18. BUCSS: Bias and Uncertainty Corrected Sample Size

    Article • December 2016, The R Foundation

    Ken Kelley

  19. Estimation of the Coefficient of Variation with Minimum Risk: A Sequential Method for Minimizing Sampling Error and Study Cost

    Article • Multivariate Behavioral Research, August 2016, Taylor & Francis

    Ken Kelley

  20. Multilevel Modeling Using R

    Article • March 2016, Taylor & Francis

    Ken Kelley

  21. Assessing Omitted Confounder Bias in Multilevel Mediation Models

    Article • Multivariate Behavioral Research, January 2016, Taylor & Francis

    Ken Kelley

  22. Understanding cycles of abuse: A multimotive approach.

    Article • Journal of Applied Psychology, January 2015, American Psychological Association (APA)

    Ken Kelley

  23. Group membership prediction when known groups consist of unknown subgroups: a Monte Carlo comparison of methods

    Article • Frontiers in Psychology, May 2014, Frontiers

    Ken Kelley

  24. The Effects of Perceived Corporate Social Responsibility on Employee Attitudes

    Article • Business Ethics Quarterly, April 2014, Cambridge University Press

    Ken Kelley

  25. What I experienced yesterday is who I am today: Relationship of work motivations and behaviors to within-individual variation in the five-factor model of personality.

    Article • Journal of Applied Psychology, January 2014, American Psychological Association (APA)

    Ken Kelley

  26. An eye for relations: eye-tracking indicates long-term negative effects of operational thinking on understanding of math equivalence

    Article • Memory & Cognition, March 2013, Springer Science + Business Media

    Ken Kelley

  27. Effect Size and Sample Size Planning

    Article • March 2013, Oxford University Press (OUP)

    Ken Kelley

  28. Multiple Regression

    Article • January 2013, Springer Science + Business Media

    Ken Kelley

  29. Estimation of and Confidence Interval Formation for Reliability Coefficients of Homogeneous Measurement Instruments

    Article • Methodology, August 2012, Hogrefe Publishing Group

    Ken Kelley

  30. Longitudinal analysis of the relations between opportunities to learn about science and the development of interests related to science

    Article • Science Education, June 2012, Wiley

    Ken Kelley

  31. On effect size.

    Article • Psychological Methods, January 2012, American Psychological Association (APA)

    Ken Kelley

  32. Sample size planning for composite reliability coefficients: Accuracy in parameter estimation via narrow confidence intervals

    Article • British Journal of Mathematical and Statistical Psychology, October 2011, Wiley

    Ken Kelley

  33. Accuracy in parameter estimation for ANCOVA and ANOVA contrasts: Sample size planning via narrow confidence intervals

    Article • British Journal of Mathematical and Statistical Psychology, October 2011, Wiley

    Ken Kelley

  34. Longitudinal gender and age bias in a prominent amateur new media community

    Article • New Media & Society, June 2011, SAGE Publications

    Ken Kelley

  35. A Comparison of Two-Group Classification Methods

    Article • Educational and Psychological Measurement, May 2011, SAGE Publications

    Ken Kelley

  36. Accuracy in Parameter Estimation for the Root Mean Square Error of Approximation: Sample Size Planning for Narrow Confidence Intervals

    Article • Multivariate Behavioral Research, February 2011, Taylor & Francis

    Ken Kelley

  37. Accuracy in parameter estimation for targeted effects in structural equation modeling: Sample size planning for narrow confidence intervals.

    Article • Psychological Methods, January 2011, American Psychological Association (APA)

    Ken Kelley

  38. Effect size measures for mediation models: Quantitative strategies for communicating indirect effects.

    Article • Psychological Methods, January 2011, American Psychological Association (APA)

    Ken Kelley

  39. Sample size planning for longitudinal models: Accuracy in parameter estimation for polynomial change parameters.

    Article • Psychological Methods, January 2011, American Psychological Association (APA)

    Ken Kelley

  40. Social Contagion and Information Technology Diffusion: The Adoption of Electronic Medical Records in U.S. Hospitals

    Article • Management Science, August 2010, INFORMS

    Dr. Corey M. Angst, Ken Kelley

  41. The Effects of Initially Misclassified Data on the Effectiveness of Discriminant Function Analysis and Finite Mixture Modeling

    Article • Educational and Psychological Measurement, September 2009, SAGE Publications

    Ken Kelley

  42. The average rate of change for continuous time models

    Article • Behavior Research Methods, May 2009, Springer Science + Business Media

    Ken Kelley

  43. A comparison of linear and mixture models for discriminant analysis under nonnormality

    Article • Behavior Research Methods, February 2009, Springer Science + Business Media

    Ken Kelley

  44. Sample Size Planning for the Squared Multiple Correlation Coefficient: Accuracy in Parameter Estimation via Narrow Confidence Intervals

    Article • Multivariate Behavioral Research, December 2008, Taylor & Francis

    Ken Kelley

  45. Diagnosis for Covariance Structure Models by Analyzing the Path

    Article • Structural Equation Modeling A Multidisciplinary Journal, October 2008, Taylor & Francis

    Ken Kelley

  46. Delineating the Average Rate of Change in Longitudinal Models

    Article • Journal of Educational and Behavioral Statistics, September 2008, American Educational Research Association (AERA)

    Ken Kelley

  47. Diagnosing Hypertension by Intradialytic Blood Pressure Recordings

    Article • Clinical Journal of the American Society of Nephrology, July 2008, American Society of Nephrology

    Ken Kelley

  48. Interpreting Results of Clinical Trials: A Conceptual Framework

    Article • Clinical Journal of the American Society of Nephrology, July 2008, American Society of Nephrology

    Ken Kelley

  49. Patterns of Clinical Functioning Over Time for Young People Served in a System of Care

    Article • Journal of Emotional and Behavioral Disorders, June 2008, SAGE Publications

    Ken Kelley

  50. The development of conceptual interests in young children

    Article • Cognitive Development, April 2008, Elsevier

    Ken Kelley

  51. Diagnostic Utility of Blood Volume Monitoring in Hemodialysis Patients

    Article • American Journal of Kidney Diseases, February 2008, Elsevier

    Ken Kelley

  52. Nonlinear Change Models in Populations with Unobserved Heterogeneity

    Article • Methodology, January 2008, Hogrefe Publishing Group

    Ken Kelley

  53. Analyzing Change: A Primer on Multilevel Models with Applications to Nephrology

    Article • American Journal of Nephrology, January 2008, Karger Publishers

    Ken Kelley

  54. Sample Size Planning for Statistical Power and Accuracy in Parameter Estimation

    Article • Annual Review of Psychology, January 2008, Annual Reviews

    Ken Kelley

  55. Infant Temperament Moderates Relations Between Maternal Parenting in Early Childhood and Children’s Adjustment in First Grade

    Article • Child Development, January 2008, Wiley

    Ken Kelley

  56. Methods for the Behavioral, Educational, and Social Sciences: An R package

    Article • Behavior Research Methods, November 2007, Springer Science + Business Media

    Ken Kelley

  57. Sample size planning for the coefficient of variation from the accuracy in parameter estimation approach

    Article • Behavior Research Methods, November 2007, Springer Science + Business Media

    Ken Kelley

  58. Trended Cosinor Change Model for Analyzing Hemodynamic Rhythm Patterns in Hemodialysis Patients

    Article • Hypertension, July 2007, Wolters Kluwer Health

    Ken Kelley

  59. Proteinuria Is a Determinant of Quality of Life in Diabetic Nephropathy: Modeling Lagged Effects with Path Analysis

    Article • American Journal of Nephrology, January 2007, Karger Publishers

    Ken Kelley

  60. Sample size planning for the standardized mean difference: Accuracy in parameter estimation via narrow confidence intervals.

    Article • Psychological Methods, January 2006, American Psychological Association (APA)

    Ken Kelley

  61. The Effects of Nonnormal Distributions on Confidence Intervals Around the Standardized Mean Difference: Bootstrap and Parametric Confidence Intervals

    Article • Educational and Psychological Measurement, February 2005, SAGE Publications

    Ken Kelley

  62. Obtaining Power or Obtaining Precision

    Article • Evaluation & the Health Professions, September 2003, SAGE Publications

    Ken Kelley

  63. Analytic Methods for Questions Pertaining to a Randomized Pretest, Posttest, Follow-Up Design

    Article • Journal of Clinical Child & Adolescent Psychology, August 2003, Taylor & Francis

    Ken Kelley

  64. Sample Size for Multiple Regression: Obtaining Regression Coefficients That Are Accurate, Not Simply Significant.

    Article • Psychological Methods, January 2003, American Psychological Association (APA)

    Ken Kelley

  65. Ethics and Sample Size Planning

    Article • Taylor & Francis

    Ken Kelley