Warren B. Bilker, PhD

Warren B. Bilker, PhDDr. Bilker's methodological research interests are in the areas of pharmacoepidemiology, survival analysis, psychiatric methods, and correlated data. His primary applied research interests are in schizophrenia and the analysis of pharmacoepidemiology data using large databases. He is the principal investigator of the biostatistics and data core of the Schizophrenia Center in the Department of Psychiatry, which has an emphasis on the study of the relationship between brain imaging findings and the clinical course of schizophrenia.


  • Ph.D., Biostatistics,  1992, Johns Hopkins University
  • M.S., Statistics, 1984, Temple University

Academic Positions

  • 2007- , Professor of Biostatistics, Department of Biostatistics and Epidemiology, University of Pennsylvania School of Medicine
  • 2007- , Professor of Biostatistics, Department of Psychiatry, University of Pennsylvania School of Medicine


  • 2008, Dean's Award for Excellence in Basic Science Teaching, University of Pennsylvania, School of Medicine

Selected Publications:

  • Bilker WB, Hansen JA, Brensinger CM, Richard J, Gur R.E., Gur RC. Development of abbreviated nine-item forms of the Raven's standard progressive matrices test. Assessment 2012;19(3):354-69.
  • Gur RC, Richard J, Calkins ME, Chiavacca R, Hansen JA, Bilker WB, Loughead J, Connolly P, Qui H, Mentch F, et al. Age group and sex differences in performance on a computerized neurocognitive battery in children age 8-21. Neuropsychology 2012;26(2):251-265. PMCID:3295891
  • Gur RC, Richard J, Hughett P, Calkins ME, Macy L, Bilker WB, Brensinger C, Gur RE. A cognitive neuroscience-based computerized battery for efficient measurement of individual differences: Standardization and initial construct validation. Journal of Neuroscience Methods 2010;187(2):254-62. PMCID:2832711
  • Gur RC, Turetsky BI, Loughead J, Waxman J, Snyder WL, Ragland JD, Elliott M, Bilker WB, Arnold SE, Gur R.E. Hemodynamic responses in neural circuitries for detection of visual target and novelty: An event-related fMRI study. Human Brain Mapping 2007;28(4):263-74
  • Gur RE, Turetsky BI, Loughead J, Snyder W, Kohler C, Elliott M, Pratawadi R, Ragland JD, Bilker WB, Siegel SJ, et al. Visual attention circuitry in schizophrenia investigated with oddball event-related functional magnetic resonance imaging. American Journal of Psychiatry 2007;164(3):442-9
  • Gur RE, Kohler CG, Ragland JD, Siegel SJ, Lesko K, Bilker WB, Gur RC. Flat affect in schizophrenia: relation to emotion processing and neurocognitive measures. Schizophrenia Bulletin 2006;32(2):279-87. PMCID:2632232
  • Bilker WB, Brensinger C, Gur RC. A two factor ANOVA-like test for correlated correlations: CORANOVA. Multivariate Behavioral Research 2004;39(4):565-94
  • Silver H, Feldman P, Bilker W, Gur RC. Working memory deficit as a core neuropsychological dysfunction in schizophrenia. American Journal of Psychiatry 2003;160(10):1809-16
  • Bilker WB, Brensinger C, Kurtz MM, Kohler CG, Gur RC, Siegel SJ, Gur R.E. Development of an abbreviated schizophrenia quality of life scale using a new method. Neuropsychopharmacology 2003;28(4):773-7
  • Gur RC, Gunning-Dixon FM, Bilker WB, Gur RE. Sex differences in temporo-limbic and frontal brain volumes of healthy adults. Cerebral Cortex 2002;12(9):998-1003
  • Gur RC, Ragland JD, Moberg PJ, Turner TH, Bilker WB, Kohler CK, Siegel SJ, Gur RE. Computerized neurocognitive scanning I: methodology and validation in healthy people. Neuropsychopharmacology 2001;25(5):766-76
  • Gur RC, Ragland JD, Moberg PJ, Bilker WB, Kohler CK, Siegel SJ, Gur R.E. Computerized neurocognitive scanning II: the profile of schizophrenia. Neuropsychopharmacology 2001;25(5):777-88
  • Gur RE, Turetsky BI, Cowell PE, Finkelman C, Maany V, Grossman RI, Arnold SE, Bilker WB, Gur RC. Temporolimbic volume reductions in schizophrenia. Archives of General Psychiatry 2000;57(8):769-75

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