Treatment spillover effects across survey experiments


Journal Article

Embedding experiments within surveys has reinvigorated survey research. Several survey experiments are generally embedded within a survey, and analysts treat each of these experiments as self-contained. We investigate whether experiments are self-contained or if earlier treatments affect later experiments, which we call "experimental spillover." We consider two types of bias that might be introduced by spillover: mean and inference biases. Using a simple procedure, we test for experimental spillover in two data sets: the 1991 Race and Politics Survey and a survey containing several experiments pertaining to foreign policy attitudes. We find some evidence of spillover and suggest solutions to avoid bias. © The Author 2009. Published by Oxford University Press on behalf of the Society for Political Methodology. All rights reserved.

Full Text

Duke Authors

Cited Authors

  • Transue, JE; Lee, DJ; Aldrich, JH

Published Date

  • May 13, 2009

Published In

Volume / Issue

  • 17 / 2

Start / End Page

  • 143 - 161

Electronic International Standard Serial Number (EISSN)

  • 1476-4989

International Standard Serial Number (ISSN)

  • 1047-1987

Digital Object Identifier (DOI)

  • 10.1093/pan/mpn012

Citation Source

  • Scopus