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Associate Commissioner  


Ken Robertson (202) 691-5440 Leadership and collaboration in mathematical statistics, behavioral science, data science, survey management, and the production of economic statistics. Research interests include exploratory data analysis, time series analysis, and computational statistics.
Senior Research Mathematical Statistician  


Terrance Savitsky (202) 691-7382 Methods include nonparametric models for small domain estimation, including dependent Dirichlet and Gaussian processes to discover sub-groups of domains, a generalized method for the Bayesian estimation of survey data that incorporates survey sampling weights and modeling approaches that replace closely-held sensitive data with synthetic microdata equipped with a formal privacy guarantee.

Senior Survey Methodologist  


This position is currently vacant.

Senior Mathematical Statistician  


Daniell Toth (202) 691-7380 Machine learning, nonparametric regression, estimation and inference with complex sample survey data, time series analysis.

Senior Research Psychologist  


This position is currently vacant.

General Information  
  Pamela Anderson (202) 691-7375  


Mathematical Statistics Research Center

Director Areas of Research


Wendy Martinez (202) 691-7400 Computational statistics, exploratory data analysis, data visualization, outlier detection, statistical pattern recognition, spatial statistics, and the analysis of unstructured text.
Research Mathematical Statisticians Areas of Research


Moon Jung Cho (202) 691-7384 Resampling variance estimation method, bootstrap variance estimation method, Balanced Repeated Replicate (BRR) method, missing or fragmented data, modeling of survey response rates.


Dan Gillman (202) 691-7523 Statistical metadata, metadata standards, automated coding, terminology.


Steve Miller (202) 691-7379 Statistical Methods, Measurement Error, Analysis of Data from Complex Surveys, Variance Estimation, and Inference.


Randall Powers (202) 691-7381 Nonresponse, data visualization, clustering analysis, data matching.


Michael Sverchkov (202) 691-7374 Estimation and inference with complex sample survey data, variance estimation, small area estimation, calibration, time series analysis.


Daniel Yang (202) 691-7530 Statistical disclosure limitation, top–coding, double-hurdle model, informed consent-to-link, respondent burden perception, recursive partitioning for complex design.

ASA/NSF/BLS Research Fellows Areas of Research
  Stephanie Eckman (202) 691-6278 Coverage error; measurement error; respondent and interviewer incentives; use of GIS in surveys.


Behavioral Science Research Center

Director Areas of Research
  Douglas Williams (202) 691-5707 Survey nonresponse, experimental methods and design, questionnaire design, qualitative testing, paradata, web and mobile survey design.

Research Psychologists Areas of Research
  Jean Fox (202) 691-7370 Usability, user experience, user interface design, usability testing, computer-assisted data collection.

  Robin Kaplan (202) 691-7383 Cognitive sources of measurement error, memory retrieval, context effects, questionnaire design, experimental and qualitative research methods, usability.

  Brandon Kopp (202) 691-7514 Nonresponse and measurement errors, questionnaire and instrument design, cognitive interviewing, usability.

  Erica Yu (202) 691-7924 Cognitive sources of measurement error, experimental methods, questionnaire design, interviewer behavior.


Research Statisticians Areas of Research


David Biagas (202) 691-5558 Cognitive sources of measurement error, experimental design, questionnaire design, response rates, and interviewer effects .


John Dixon (202) 691-7516 Nonresponse, nonsampling error, item nonresponse, measurement error, structural equation models, missing data problems, categorical data, psychometrics, multivariate methods, classification and clustering.


Josh Langeland (202) 691-5037 Adaptive Design; contact strategies; nonresponse adjustment; electronic response in establishment surveys


Struther VanHorn (202) 691-7568 Nonresponse and measurement errors, questionnaire design, qualitative research methods and cognitive interviewing, usability.

Cognitive Laboratory


Stella Godbolt (202) 691-7524 Schedules participants for studies, maintains database of volunteers, coordinates and assists with studies.