The Minnesota Twin Registry: Current Status and Future Directions

Minnesota Twin Registry, Department of Psychology, University of Minnesota, Twin Cities Campus, Minneapolis 55455-0344, USA.
Twin Research 11/2002; 5(5):488-92. DOI: 10.1375/136905202320906336
Source: PubMed


The Minnesota Twin Registry is a birth-record-based twin registry. Begun in 1983, it includes data for 4307 surviving intact pairs born in Minnesota between 1936 and 1955. In addition, the Registry includes 901 twin pairs born in Minnesota from 1904 to 1934, as well as 391 male pairs born in Minnesota from 1961 to 1964. The research focus is primarily on human individual differences assessed by self-report. Questionnaires completed by the participants include measures of personality, occupational interests, demographics, and leisure-time activities. We outline major contributions that have resulted from Registry research, as well as current and future research directions.

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    • "Dizygotic twins of unlike sex were not recruited for the study. For more details on the registry see Lykken, Bouchard, McGue, and Tellegen (1990) and Krueger and Johnson (2002). It should be noted that our sample is clearly not representative of adults in the United States—it is middle-aged, overwhelmingly white, and geographically concentrated in the Midwest. "
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    ABSTRACT: This article reports results from the first twin study of adults in the United States that focuses exclusively and comprehensively on political traits. These data allow us to test whether a common set of genetic and environmental influences act upon a broad variety of values, personality traits, and political attitudes. In short, it allows us to empirically investigate whether there are a core set of predispositions that form the basis of our political orientations and, if so, whether these predispositions are shaped by the same environmental and innate forces. The key finding from our analysis is that there are core political predispositions that are rooted in common genetic and environmental influences and that these predispositions are empirically distinct from broader personality traits.
    Preview · Article · Dec 2013 · Political Psychology
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    • "This group consists of 201 female monozygotic (MZ), 130 male MZ, 80 male DZ, and 140 female dizygotic (DZ) pairs. All twins are members of the Minnesota Twin Family Registry (Krueger & Johnson, 2002; Lykken et al., 1990) and the data we use were generated by a single wave online survey on political attitudes conducted in 2008 and 2009; the ascertainment rate was 61%. A small number of subjects, 240 in total, with limited internet access took the survey on paper. "
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    ABSTRACT: Attitudes towards foreign policy have typically been explained by ideological and demographic factors. We approach this study from a different perspective and ex amine the extent to which foreign policy preferences correspond to genetic variation. Using data from the Minnesota Twin Family Study, we show that a moderate share of individual differences in the degree to which one's foreign policy preferences are hawkish or dovish can be attributed to genetic variation. We also show, based on a bivariate twin model, that foreign policy preferences share a common genetic source of variation with political ideology. This result presents the possibility that ideology may be the causal pathway through which genes affect foreign policy preferences.
    Preview · Article · Feb 2012 · Twin Research and Human Genetics
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    • "In the Minnesota Study of Twins Reared Apart, genetic factors accounted for more than 50% of the variance in issues like personal interests, well-being and emotionality (Krueger and Johnson, 2002). Even in occurrences of major life events such as divorce, there is a heritable component (Krueger and Johnson, 2002). In another study, Chiao and Blizinsky (2010) concluded that East Asian nations that have a higher frequency of S allele carriers of the 5-HTTLPR (a type of polymorphism that causes attentional bias to negative information and negative emotion) engage in narrow thinking and a cognitive focus that facilitates the maintenance of collectivistic cultural norms of social conformity. "
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    ABSTRACT: In previous research endeavours on national economic development, almost no studies exist on how regional confidence can influence industrial and economic well-being. This paper provides a cultural-ecology parenthesis, which integrates climatic, geographic and genetic factors to spell out the forces of confidence on national economic well-being, which is reflected by the gross national income per capita. The correlation between the mean level of the Rosenberg self-esteem scale and the GNI per capita growth of 45 countries across the globe supports the hypothesis that the cultural-ecology perspective of confidence has a positive influence on overall economic development.
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