We constructed a survey instrument, administered by Knowledge Networks as part of the American National Election Studies (ANES). The ANES panel was recruited to be representative of the U.S. population age 18 years and older living in households with telephones. Households without Internet access were offered access in return for completing monthly surveys. ANES panel members were invited to complete one survey monthly, receiving $10 for each survey completed (DeBell, Krosnick, and Lupia 2010). Between April 9 and May 7, 2009, 2,409 participants completed our ANES survey in English, with a completion rate of 66 percent. A random subsample of 559 participants completed the survey experiment we analyze in this article.
