RTI International

Sep 2015 – Present Washington, DC
RTI Fellows provide scientific leadership to the institute

Interim Chair of Sociology

University of Mannheim

Jan 2013 – Jan 2014 Mannheim, Germany
Responsibilities include:

  • Teaching courses in quantitative analysis, research methods
  • Mentoring master’s students

Senior Researcher

Institute for Employment Research (IAB)

Jul 2010 – Jul 2015 Nuremberg, Germany
Responsibilities include:

  • Survey methods research
  • Assistance with design of IAB surveys

Survey Methodologist

NORC at the University of Chicago

Apr 2001 – Jan 2010 Chicago, IL

Recent & Upcoming Talks

The insights we get from data science models are affected by the quality of the data that go into the models. Data can suffer from …

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 …

Survey data producers increasingly provide estimates of nonresponse bias in several variables when they release or analyze data. …

The Consumer Expenditure Survey is a large, federal data collection effort and contributes to the calculation of the U. S. inflation …




Statistics, Data Science, Machine Learning

International Data Collection


When households have no chance to be selected for a survey, the data collected can be biased. 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 survey data quality


Elected Fellow

ASA / BLS / NSF Fellow

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