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628 Annals Am. Acad. Pol. & Soc. Sci. 6 (2010)

handle is hein.cow/anamacp0628 and id is 1 raw text is: INTRODUCTION
Field
Experiments
in Comparative
Politics and
Policy
By
DONALD P. GREEN
and
PETER JOHN

If by some quirk or device-such as a time
machine, capsule, or tunnel-we were trans-
ported back to 1998, a dozen years before this
volume was produced, we would be thinking
about field experiments in political science in a
very different way than we do now. Although
some early experiments had been conducted
in field settings, by the 1980s, students of
political behavior had largely abandoned them
in favor of the analysis of large-scale surveys.
Not a single field experiment was published in
any political science journal in the decade pre-
ceding 1998, when field experimentation
began to make a comeback. The first voting
experiments, examining the impact of mail,
telephoning, and canvassing on turnout, had
been conducted but not yet published (Gerber
and Green 2000). The next wave of field
experiments in political science was just about
to spread from Yale University to elsewhere in
the United States and around the globe.
This renaissance set in motion two important
changes in the discipline. These changes have
occurred gradually, but a time traveler would
now find them striking. One change had to do
with the priority given to the rigorous estima-
tion of causal effects. Prior to 1998, political
scientists valued the enterprise of estimating
cause-and-effect relationships, but they placed
little emphasis on the role of research design,
Donald P. Green is the A. Whitney Griswold Professor
of Political Science at Yale University. Since 1996, he
has serr las director of Yale's Institution for Social and
Poliniy Stuies, an interdisciplinary research center that
emphasizes field experimentation. In collaboration with
his Yale colleagues, he has conducted an array of field
experiments in political science, communication, crimi-
nology, and education.
Peter John is the Hallsworth Chair of Governance and
is a director of the Institute for Political and Economic
Governance in the School of Social Sciences at the
University of Manchester, UK. He is author of Analysing
Public Policy (Cassell 1998) and Local Governance in
Western Europe (SAGE 2001).
DOI: 10.1177/0002716209351498

ANNALS, AAPSS, 628, March 2010

6

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