Replicating Experiments Using Aggregate and Survey Data: The Case of Negative Advertising and Turnout
- 1 December 1999
- journal article
- Published by Cambridge University Press (CUP) in American Political Science Review
- Vol. 93 (4), 901-909
- https://doi.org/10.2307/2586120
Abstract
Experiments show significant demobilizing and alienating effects of negative advertising. Although internally valid, experiments may have limited external validity. Aggregate and survey data offer two ways of providing external validation for experiments. We show that survey recall measures of advertising exposure suffer from problems of internal validity due to simultaneity and measurement error, which bias estimated effects of ad exposure. We provide valid estimates of the causal effects of ad exposure for the NES surveys using instrumental variables and find that negative advertising causes lower turnout in the NES data. We also provide a careful statistical analysis of aggregate turnout data from the 1992 Senate elections that Wattenberg and Brians (1999) recommend. These aggregate data confirm our original findings. Experiments, surveys, and aggregate data all point to the same conclusion: Negative advertising demobilizes voters.Keywords
This publication has 16 references indexed in Scilit:
- The Effect of TV Ads and Candidate Appearances on Statewide Presidential Votes, 1988–96American Political Science Review, 1999
- Cancellation and Focus Model of Choice and Preferences for Political CandidatesBasic and Applied Social Psychology, 1998
- Inference on Structural Parameters in Instrumental Variables Regression with Weak InstrumentsEconometrica, 1998
- Instrumental Variables Regression with Weak InstrumentsEconometrica, 1997
- Does Attack Advertising Demobilize the Electorate?American Political Science Review, 1994
- Estimation by SimulationThe Review of Economics and Statistics, 1994
- Messages Received: The Political Impact of Media ExposureAmerican Political Science Review, 1993
- Who Gets the News? Alternative Measures of News Reception and Their Implications for ResearchPublic Opinion Quarterly, 1993
- A Tale of Two Questions: Benefits of Asking More Than One QuestionPublic Opinion Quarterly, 1990
- Answering Autobiographical Questions: The Impact of Memory and Inference on SurveysScience, 1987