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

Do respondents underreport purchases in later waves to avoid follow up questions? CE respondents take part in four waves of the …

We draw upon recent advances in computer vision algorithms and in the availability and resolution of geospatial big data to improve the …


Innovative Sampling Methods

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

Motivated Misreporting in Surveys

Response strategies to shorten survey length and burden

Passive Data & Surveys

Data collected without the involvement of the respondent can improve survey data quality


Using Personal Sensor Data to Improve Public Health Surveillance & Survey Data

CDC Offices in Atlanta, Georgia

August 1, 2019


Sampling, Weighting and Estimation

Part of GESIS 2019 Summer School

Cologne, Germany August 19-23, 2019

This week-long course will cover:

  • Methods of sample selection
  • Calculation of weights that adjust for nonresponse and undercoverage
  • Analysis of complex survey data and nonprobability surveys

The emphasis of the course is more applied than theoretical, but students are expected to be comfortable with statistics and to have some experience with data analysis. For each topic, students will do exercises in Stata that apply the techniques learned in the lectures. Students will get the most out of the class if they have prior experience with Stata.

For more information, see the course page

This week-long course will cover: methods of sample selection calculation of weights that adjust for nonresponse and undercoverage …