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Träfflista för sökning "WFRF:(Cesarini David) ;pers:(Lichtenstein Paul)"

Sökning: WFRF:(Cesarini David) > Lichtenstein Paul

  • Resultat 1-8 av 8
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1.
  • Smith, Jennifer A, et al. (författare)
  • Genome-wide association study identifies 74 loci associated with educational attainment
  • 2016
  • Ingår i: Nature (London). - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 533:7604, s. 539-542
  • Tidskriftsartikel (refereegranskat)abstract
    • Educational attainment is strongly influenced by social and other environmental factors, but genetic factors are estimated to account for at least 20% of the variation across individuals. Here we report the results of a genome-wide association study (GWAS) for educational attainment that extends our earlier discovery sample of 101,069 individuals to 293,723 individuals, and a replication study in an independent sample of 111,349 individuals from the UK Biobank. We identify 74 genome-wide significant loci associated with the number of years of schooling completed. Single-nucleotide polymorphisms associated with educational attainment are disproportionately found in genomic regions regulating gene expression in the fetal brain. Candidate genes are preferentially expressed in neural tissue, especially during the prenatal period, and enriched for biological pathways involved in neural development. Our findings demonstrate that, even for a behavioural phenotype that is mostly environmentally determined, a well-powered GWAS identifies replicable associated genetic variants that suggest biologically relevant pathways. Because educational attainment is measured in large numbers of individuals, it will continue to be useful as a proxy phenotype in efforts to characterize the genetic influences of related phenotypes, including cognition and neuropsychiatric diseases.
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  • Cesarini, David, et al. (författare)
  • Heritability of ultimatum game responder behavior
  • 2007
  • Ingår i: Proceedings of the National Academy of Sciences. - : National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 104:40, s. 15631-15634
  • Tidskriftsartikel (refereegranskat)abstract
    • Experimental evidence suggests that many people are willing to deviate from materially maximizing strategies to punish unfair behavior. Even though little is known about the origins of such fairness preferences, it has been suggested that they have deep evolutionary roots and that they are crucial for maintaining and understanding cooperation among non-kin. Here we report the results of an ultimatum game, played for real monetary stakes, using twins recruited from the population-based Swedish Twin Registry as our subject pool. Employing standard structural equation modeling techniques, we estimate that >40% of the variation in subjects' rejection behavior is explained by additive genetic effects. Our estimates also suggest a very modest role for common environment as a source of phenotypic variation. Based on these findings, we argue that any attempt to explain observed ultimatum bargaining game behavior that ignores this genetic influence is incomplete.
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4.
  • Dawes, Christopher T., et al. (författare)
  • Experimental Game Theory and Behavior Genetics
  • 2009
  • Ingår i: Annals of the New York Academy of Sciences. - : Wiley. - 0077-8923. ; , s. 66-75
  • Tidskriftsartikel (refereegranskat)abstract
    • We summarize the findings from a research program studying the heritability of behavior in a number of widely used economic games, including trust, dictator, and ultimatum games. Results from the standard behavior genetic variance decomposition suggest that strategies and fundamental economic preference parameters are moderately heritable, with estimates ranging from 18 to 42%. In addition, we also report new evidence on so-called "hyperfair" preferences in the ultimatum game. We discuss the implications of our findings with special reference to current efforts that seek to understand the molecular genetic architecture of complex social behaviors.
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5.
  • Johannesson, Magnus, et al. (författare)
  • Genetic Variation in Financial Decision-Making
  • 2010
  • Ingår i: Journal of Finance. - : Wiley. - 1540-6261 .- 0022-1082. ; 65:5, s. 1725-1754
  • Tidskriftsartikel (refereegranskat)abstract
    • Individuals differ in how they construct their investment portfolios, yet empirical models of portfolio risk typically account only for a small portion of the cross-sectional variance. This paper asks whether genetic variation can explain some of these individual differences. Following a major pension reform Swedish adults had to form a portfolio from a large menu of funds. We match data on these investment decisions with the Swedish Twin Registry and find that approximately 25% of individual variation in portfolio risk is due to genetic variation. We also find that these results extend to several other aspects of financial decision-making.
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  • Johannesson, Magnus, et al. (författare)
  • Genetic variation in preferences for giving and risk taking
  • 2009
  • Ingår i: Quarterly Journal of Economics. - : Oxford University Press (OUP): Policy E - Oxford Open Option D - RCUK. - 1531-4650 .- 0033-5533. ; 124:2, s. 809-842
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, we use the classical twin design to provide estimates of genetic and environmental influences on experimentally elicited preferences for risk and giving. Using standard methods from behavior genetics, we find strong prima facie evidence that these preferences are broadly heritable and our estimates suggest that genetic differences explain approximately twenty percent of individual variation. The results thus shed light on an important source of individual variation in preferences, a source that has hitherto been largely neglected in the economics literature.
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7.
  • Johannesson, Magnus, et al. (författare)
  • Heritability of Overconfidence
  • 2009
  • Ingår i: Journal of the European Economic Association. - : Oxford University Press (OUP): Policy B - Oxford Open Option D / Massachusetts Institute of Technology Press (MIT Press) / Oxford University Press (OUP): Policy F. - 1542-4766. ; 7:2-3, s. 617-627
  • Tidskriftsartikel (refereegranskat)abstract
    • Empirical evidence suggests that people on average overestimate their own ability in a variety of circumstances. Little is known, however, about the origins of such overconfidence. To shed some light on this issue, we use the classic twin design to estimate the genetic and environmental contributions to individual differences in overconfidence. We collect data on overconfidence among 460 twin pairs. Overconfidence is measured as the difference between the perceived and actual rank in cognitive ability. Cognitive ability is measured using a 20-minute test of general intelligence. We find a highly significant joint effect of genes and common environment, but our estimates of the relative contributions of genetic and common environmental variation are less precise. According to our point estimates, genetic differences explain 16–34% of the variation in overconfidence depending on the definition of overconfidence used and common environmental differences explain 5–11%. ; Economic Anthropology; Social and Economic Stratification
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