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Associate Commissioner  


Jennifer Edgar (202) 691-7528 Question design and evaluation, cognitive interviewing, online pretesting methods and other qualitative research methods.
Senior Survey Methodologists  


Polly Phipps (202) 691-7513 Survey measurement error, data quality measures, questionnaire and instrument design, response rates, modeling of nonresponse, nonresponse bias.


William Mockovak (202) 691-7414 Questionnaire design, cognitive interviewing, Web surveys, usability testing, information architecture, CASIC applications, interviewer training.
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, taxonomies.


Terrance Savitsky (202) 691-7382 Bayesian non-parametric inference focused on discovering sub-groups or sub-sets of the data with distinct behavioral profiles or high relevance. Methods include non-parametric prior formulations including dependent Dirichlet processes to discover sub-groups, anistropic Gaussian processes for non-linear functional data estimation, and factor analytic methods to uncover sparse latent constructs.


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.

  Monika Hu (202) 691-7412 Bayesian education, Bayesian methods, blended/hybrid learning, data confidentiality, missing data, multiple imputation, non-parametric Bayes, synthetic data.

AAAS Research Fellow Areas of Research
  Samantha Tyner (202) 691-7412 Statistical graphics/data visualization, text mining & analysis, machine learning, reproducible research, and network analysis.


Behavioral Science Research Center

Director Areas of Research


This position is currently vacant.

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.


Morgan Earp (202) 691-7387 Survey measurement error, nonresponse bias, experimental design, decision tree modeling, structural equation modeling, instrument design, and psychometrics


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.