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The Multiple Effects of Casualties on Public Support for War: An Experimental Approach

Published online by Cambridge University Press:  01 February 2008

SCOTT SIGMUND GARTNER
SCOTT SIGMUND GARTNER*
Affiliation:
The University of California, Davis
*
Scott Sigmund Gartner is Professor, Department of Political Science, The University of California, Davis, Davis, CA 95616 (ssgartner@ucdavis.edu).
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Abstract

Public support for a conflict is not a blank check. Combat provides information people use to update their expectations about the outcome, direction, value, and cost of a war. Critical are fatalities—the most salient costs of conflict. I develop a rational expectations theory in which both increasing recent casualties and rising casualty trends lead to decreased support. Traditional studies neither recognize nor provide a method for untangling these multiple influences. I conduct six experiments, three on the Iraq War (two with national, representative samples) and three with a new type of panel experiment design on hypothetical military interventions. The results of hazard and ordered logit analyses of almost 3,000 subjects support a rational expectations theory linking recent casualties, casualty trends, and their interaction to wartime approval. I also examine the effects of the probability of victory, information levels, and individual characteristics on the support for war, and contrast results from representative and convenience samples.

Type
Research Article
Information
American Political Science Review , Volume 102 , Issue 1 , February 2008 , pp. 95 - 106
Copyright
Copyright © American Political Science Association 2008

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