RTI International

Sep 2015 – Dec 2022 Washington, DC
  • Conducting and publishing research into data quality
  • Mentoring junior researchers
  • Providing scientific leadership to the institute

Chair of Sociology (Interim)

University of Mannheim

Jan 2013 – Jan 2014 Mannheim, Germany
  • Teaching courses in data analysis & research methods
  • Mentoring students

Senior Researcher

Institute for Employment Research (IAB)

Jul 2010 – Jul 2015 Nuremberg, Germany
  • Conducting and publishing methodological research
  • Advising on design of IAB surveys


NORC at the University of Chicago

Apr 2001 – Jan 2010 Chicago, IL

Recent & Upcoming Talks

As many in the AI field transition from a model-centric to a data-centric approach, the quality of training data is receiving increased …

Data scientists are increasingly turning their attention to the collection of high quality training data. Those of us with expertise in …

As policymakers and community leaders have worked to respond to the COVID-19 pandemic, it has become increasingly clear that statistics …

Many large-scale government surveys do not have the budget or time to conduct experiments to assess the effects of questionnaire …




Statistics, Data Science, Machine Learning

International Data Collection


Helping data scientists collect more accurate training data, decreasing the cost and time needed to train models

My research has explored undercoverage bias in in-person surveys around the world.

Alternative sampling approaches which do not depend on up-to-date census data or interviewer involvement

The incentives of those producing data impact the quality of the data

Data collected without the involvement of the respondent can improve quality


Elected Fellow

ASA / BLS / NSF Fellow

Conducted research into measurement error due to respondent shortcuts in the Consumer Expenditure Survey