The Center for Open Science (Board Member 2014-present) provides instruction, infrastructure, and incentives for increasing transparency in scientific research.
(Co-founder with Diana Mutz) TESS is an NSF-funded infrastructure project called Time-sharing Experiments for the Social Sciences (TESS) that offers researchers opportunities to test their experimental ideas on large, diverse, randomly-selected subject populations.
(Principal Investigator with Jon A. Krosnick, 2005-2009 ) The mission of the National Election Studies (NES) is to produce high quality data on voting, public opinion, and political participation that serve the research needs of social scientists, teachers, students, policy makers and journalists concerned with the theoretical and empirical foundations of mass politics in a democratic society.
In the fall of 2002, I advised the Brennan Center for Justice and the US Department of Justice on social scientific matters central to litigation over the Bipartisan Campaign Reform Act. The case was first heard by a panel of three District Court Justice and then referred automatically to the Supreme Court. Two of the three District Court judges ruled in favor of the Act. These same two judges, one a Bill Clinton appointee and the other a George W. Bush appointee, based their opinions on a careful examination of the relevant social scientific arguments including my own. The Supreme Court later affirmed these opinions. You can read their arguments here.