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Why Twin Studies Are Problematic for the Study of Political Ideology: Rethinking "Are Political Orientations Genetically Transmitted?"

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Abstract:

We argue that many of the arguments presented, and methods used, by
Alford, Funk, and Hibbing in “Are Political Orientations Genetically Transmitted?”
(APSR 2005) are flawed. Our critical discussion has three parts. We begin
with a general discussion of the heritability statistic (h2); we explain why
the statistic is not an estimate of the extent to which political attitudes are
genetically inherited, as well as why the authors are wrong to extrapolate
their findings to the American population. Next, we describe problems
with the “twin study” method that cause us to doubt the “heritability” and
“environment” statistics it generates. We then discuss several politically
relevant “genetic” theoretical claims made by the authors that are either
not tested or not supported by their data analyses. Upon concluding these
critical discussions, we provide an alternate research agenda for the
exploration of the origins of political orientations and attitudes. First, we
discuss findings from the political socialization literature that suggest a
very important role for social transmission in attitude formation. Second,
we provide a theoretical framework for analyzing the contribution of
genes and the environment to political orientations that takes into account
the complex, interacting relationship of these two influences.

Most Common Document Word Stems:

twin (178), studi (121), polit (108), social (96), environ (90), et (78), al (77), attitud (75), genet (74), herit (73), alford (73), mz (58), influenc (56), similar (56), parent (52), discuss (48), differ (47), share (44), dz (41), pair (41), author (39),

Author's Keywords:

behavioral genetics, twin studies, political ideology, socialization
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Association:
Name: International Society of Political Psychology
URL:
http://ispp.org


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MLA Citation:

Suhay, Elizabeth. and Kalmoe, Nathan. "Why Twin Studies Are Problematic for the Study of Political Ideology: Rethinking "Are Political Orientations Genetically Transmitted?"" Paper presented at the annual meeting of the International Society of Political Psychology, Classical Chinese Garden, Portland, Oregon USA, Jul 04, 2007 <Not Available>. 2009-05-24 <http://www.allacademic.com/meta/p204584_index.html>

APA Citation:

Suhay, E. and Kalmoe, N. , 2007-07-04 "Why Twin Studies Are Problematic for the Study of Political Ideology: Rethinking "Are Political Orientations Genetically Transmitted?"" Paper presented at the annual meeting of the International Society of Political Psychology, Classical Chinese Garden, Portland, Oregon USA Online <APPLICATION/PDF>. 2009-05-24 from http://www.allacademic.com/meta/p204584_index.html

Publication Type: Conference Paper/Unpublished Manuscript
Abstract: We argue that many of the arguments presented, and methods used, by
Alford, Funk, and Hibbing in “Are Political Orientations Genetically Transmitted?”
(APSR 2005) are flawed. Our critical discussion has three parts. We begin
with a general discussion of the heritability statistic (h2); we explain why
the statistic is not an estimate of the extent to which political attitudes are
genetically inherited, as well as why the authors are wrong to extrapolate
their findings to the American population. Next, we describe problems
with the “twin study” method that cause us to doubt the “heritability” and
“environment” statistics it generates. We then discuss several politically
relevant “genetic” theoretical claims made by the authors that are either
not tested or not supported by their data analyses. Upon concluding these
critical discussions, we provide an alternate research agenda for the
exploration of the origins of political orientations and attitudes. First, we
discuss findings from the political socialization literature that suggest a
very important role for social transmission in attitude formation. Second,
we provide a theoretical framework for analyzing the contribution of
genes and the environment to political orientations that takes into account
the complex, interacting relationship of these two influences.

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Associated Document Available International Society of Political Psychology
Associated Document Available Political Research Online

Document Type: application/pdf
Page count: 53
Word count: 13799
Text sample:
Why Twin Studies Are Problematic for the Study of Political Ideology: Rethinking Are Political Orientations Genetically Transmitted? Elizabeth Suhay and Nathan Kalmoe Department of Political Science University of Michigan and Christa McDermott Department of Psychology University of Michigan DRAFT 1 July 2007 Paper prepared for the International Society of Political Psychology annual meeting in Portland Oregon July 3-7 2007 ABSTRACT We argue that many of the arguments presented and methods used by Alford Funk and Hibbing in “Are Political
.68/.69 .28/.26 Tedin (74/80) - Sal .68/.75 .39/.06 Jennings et al - Pol .61/.48 .37/.24 Jennings et al - PS AFH values represent percentages of political attitude variance attributable to shared environment. The socialization study values are parent-child correlations. PA = Perceptual Accuracy Pol = Politicization PS = Parent Stability Sal = Salience. For Jennings et al. (2001) the left number is the Generation1-Generation2 correlation while the right number is the Gen2-Gen3 correlation. (Party evaluations and ideology were not


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