Alexandra Castillo is a research methodologist in international research methods at Pew Research Center. She advises on complex sample design, survey implementation, and data quality assessment for international projects across the Center. Alexandra received her doctorate in political science at the Ohio State University, where she specialized in comparative politics and political psychology. She regularly presents at conferences, and she is a member of the American Association for Public Opinion Research (AAPOR) and the World Association for Public Opinion Research (WAPOR). Alexandra is currently serving as the Secretary/Membership Chair of DC-AAPOR.