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What Drives the Development of Social Inequality Over the Life Course? The German TwinLife Study

  • Elisabeth Hahn (a1), Juliana Gottschling (a1), Wiebke Bleidorn (a2), Christian Kandler (a3), Marion Spengler (a4), Anna E. Kornadt (a3), Wiebke Schulz (a3), Reinhardt Schunck (a3), Tina Baier (a3), Kristina Krell (a3), Volker Lang (a3), Franziska Lenau (a1), Anna-Lena Peters (a3), Martin Diewald (a3), Rainer Riemann (a3) and Frank M. Spinath (a1)...


The German twin family study ‘TwinLife’ was designed to enhance our understanding of the development of social inequalities over the life course. The interdisciplinary project investigates mechanisms of social inequalities across the lifespan by taking into account psychological as well as social mechanisms, and their genetic origin as well as the interaction and covariation between these factors. Main characteristics of the study are: (1) a multidimensional perspective on social inequalities, (2) the assessment of developmental trajectories in childhood, adolescence, and young adulthood in a longitudinal design by using (3) a combination of a multi-cohort cross-sequential and an extended twin family design, while (4) capturing a large variation of behavioral and environmental factors in a representative sample of about 4,000 German twin families. In the present article, we first introduce the theoretical and empirical background of the TwinLife study, and second, describe the design, content, and implementation of TwinLife. Since the data will be made available as scientific use file, we also illustrate research possibilities provided by this project to the scientific community.

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Corresponding author

address for correspondence: Elisabeth Hahn, Department of Psychology, Saarland University, Campus A1 3, Saarbruecken D-66123, Germany. E-mail:


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Abbott, A. (2001). Time matters: On theory and method. Chicago: University of Chicago Press.
Abendroth, A., Melzer, S. M., Jacobebbinghaus, P., & Schlechter, F. (2014). Methodenbericht Beschäftigten- und Partnerbefragung des Linked-Employer-Employee Panels (LEEP-B3) im Projekt B3 ‘Wechselwirkungen zwischen Verwirklichungschancen im Berufs- und Privatleben‘(SFB 882 Technical Report Series, 6). Bielefeld: DFG Research Center. Retrieved from
Alkire, S. (2005). Subjective quantitative studies of human agency. Social Indicators Research, 74, 217260.
Becker, A., Busjahn, A., Faulhaber, H., Bähring, S., Robertson, J., Schuster, H., & Luft, F. (1997). Twin zygosity. Automated determination with microsatellites. Journal of Reproductive Medicine, 42, 260266.
Beierlein, C., Kovaleva, A., Kemper, C. J., & Rammstedt, B. (2012). Ein Messinstrument zur Erfassung subjektiver Kompetenzerwartungen: Allgemeine Selbstwirksamkeit Kurzskala (ASKU) (GESIS Working Papers 2012). Köln: GESIS. Retrieved from
Blossfeld, H.-P., von Maurice, J., & Schneider, T. (2011). Grundidee, Konzeption und Design des Nationalen Bildungspanels für Deutschland, NEPS Working Paper, 1. Retrieved from
Boer, F., Westenberg, P. M., McHale, S. M., Updegraff, K. A., & Stocker, C. M. (1997). The factorial structure of the Sibling Relationship Inventory (SRI) in American and Dutch samples. Journal of Social and Personal Relationships, 14, 851859.
Bonanno, G. A. (2004). Loss, trauma, and human resilience: Have we underestimated the human capacity to thrive after extremely aversive events?. The American Psychologist, 59, 2028.
Breen, R., & Jonsson, J. O. (2005). Inequality of opportunity in comparative perspective: Recent research on educational attainment and social mobility. Annual Review of Sociology, 31, 223243.
Breen, R., Luijkx, R., Müller, W., & Pollak, R. (2009). Nonpersistent inequality in educational attainment: Evidence from eight European countries. American Journal of Sociology, 114, 14751521.
Breslau, J., Michael, L., Nancy, S. B., & Kessler, R. C. (2008). Mental disorders and subsequent educational attainment in a US national sample. Journal of Psychiatric Research, 42, 708716.
Byrd, A. L., & Manuck, S. B. (2014). MAOA, childhood maltreatment, and antisocial behavior: Meta-analysis of a gene-environment interaction. Biological Psychiatry, 75, 917.
Caspi, A., McClay, J., Moffitt, T. E., Mill, J., Martin, J., Craig, I. W., . . . Poulton, R. (2002). Role of genotype in the cycle of violence in maltreated children. Science, 297, 851854.
Conley, D., Domingue, B., Cesarini, D., Dawes, C., Rietveld, C., & Boardman, J. (2015). Is the effect of parental education on offspring biased or moderated by genotype?. Sociological Science, 2, 82105.
Costa, P. T., & McCrae, R. R. (1992). Four ways five factors are basic. Personality and Individual Differences, 13, 653665.
Coventry, W. L., & Keller, M. C. (2005). Estimating the extent of parameter bias in the classical twin design: A comparison of parameter estimates from extended twin-family and classical twin designs. Twin Research and Human Genetics, 8, 214223.
Cunha, F., & Heckman, J. J. (2009). The economics and psychology of inequality and human development. Journal of the European Economic Association, 7, 320364.
Dickhäuser, O., Schöne, C., Spinath, B., & Stiensmeier-Pelster, J. (2002). Die Skalen zum akademischen Selbstkonzept. Zeitschrift Für Differentielle Und Diagnostische Psychologie, 23, 393405.
Diener, E., Emmons, R. A., Larsen, R. J., & Griffin, S. (1985). The satisfaction with life scale. Journal of Personality Assessment, 49, 7175.
Duckworth, A. L., & Quinn, P. D. (2009). Development and validation of the short grit scale (Grit-S). Journal of Personality Assessment, 91, 166174.
Eaves, L. (2009). Putting the ‘human’ back in genetics: Modeling the extended kinships of twins. Twin Research and Human Genetics, 12, 17.
Ellert, U., Lampert, T., & Ravens-Sieberer, U. (2005). Messung der gesundheitsbezogenen Lebensqualität mit dem SF-8. Bundesgesundheitsblatt-Gesundheitsforschung-Gesundheitsschutz, 48, 13301337.
Erikson, R., & Goldthorpe, J. H. (1992). The constant flux: A study of class mobility in industrial societies. Oxford: Oxford University Press.
Esch, P., Bocquet, V., Pull, C., Couffignal, S., Lehnert, T., Graas, M., . . . Ansseau, M. (2014). The downward spiral of mental disorders and educational attainment: A systematic review on early school leaving. BMC Psychiatry, 14, 237.
Farber, S. L. (1981). Identical twins reared apart: A reanalysis. New York: Basic Books.
Fowler, J. H., & Schreiber, D. (2008). Biology, politics, and the emerging science of human nature. Science, 322, 912914.
Freese, J. (2008). Genetics and the social science explanation of individual outcomes. American Journal of Sociology, 114, S1S35.
Frey, A., Althaus, D., & Duhm, E. (2008). Beobachtungsbogen für 3-bis 6-jährige Kinder: BBK 3-6; Manual. Göttingen: Hogrefe.
Gadermann, A. M., Schonert-Reichl, K. A., & Zumbo, B. D. (2010). Investigating validity evidence of the satisfaction with life scale adapted for children. Social Indicators Research, 96, 229247.
Gerlitz, J.-Y., & Schupp, J. (2005). Zur Erhebung der Big-Five-basierten Persönlichkeitsmerkmale im SOEP. Dokumentation der Instrumentenentwicklung BFI-S auf Basis des SOEP-Pretests 2005, DIW Research Notes, 4.
Giovannini, E., Hall, J., Morrone, A., & Ranuzzi, G. (2011). A framework to measure the progress of societies. Revue D’économie Politique, 121, 93118.
Gjone, H., & Nøvik, T. S. (1995). Parental ratings of behaviour problems: A twin and general population comparison. Journal of Child Psychology and Psychiatry, and Allied Disciplines, 36, 12131224.
Goldthorpe, J. H. (2010). Analysing social inequality: A critique of two recent contributions from economics and epidemiology. European Sociological Review, 26, 731744.
Goodman, R. (1997). The strengths and difficulties questionnaire: A research note. Journal of Child Psychology and Psychiatry, 38, 581586.
Grusky, D. B., Ku, M. C., & Szelényi, S. (2008). Social stratification: Class, race, and gender in sociological perspective. Boulder, CO: Westview.
Guo, G., & Stearns, E. (2002). The social influences on the realization of genetic potential for intellectual development. Social Forces, 80, 881910.
Hahn, E., Gottschling, J., & Spinath, F. M. (2013). Current twin studies in Germany: Report on CoSMoS, SOEP, and ChronoS. Twin Research and Human Genetics, 16, 173178.
Hahn, E., Specht, J., Gottschling, J., & Spinath, F. M. (2015). Coping with unemployment: The impact of unemployment duration and personality on trajectories of life satisfaction. European Journal of Personality, 29, 635646.
Hahn, E., Spinath, F. M., Siedler, T., Wagner, G. G., Schupp, J., & Kandler, C. (2012). The complexity of personality: Advantages of a genetically sensitive multi-group design. Behavior Genetics, 42, 221233.
Hauser, R. M., Warren, J. R., Huang, M.-H., & Carter, W. Y. (2000). Occupational status, education, and social mobility in the meritocracy. In Arrow, K., Bowles, S., & Durlauf, S. (Eds.), Meritocracy and economic inequality (pp. 179229). Princeton, NJ: Princeton University Press.
Headey, B. (2010). The set point theory of well-being has serious flaws: On the eve of a scientific revolution?. Social Indicators Research, 97, 721.
Heath, A. C., Kendler, K. S., Eaves, L. J., & Markell, D. (1985). The resolution of cultural and biological inheritance: Informativeness of different relationships. Behavior Genetics, 15, 439465.
Heckman, J. J. (2006). Skill formation and economics of investing in disadvantaged children. Science, 312, 19001902.
Heckman, J. J., & Kautz, T. (2012). Hard evidence on soft skills. Labour Economics, 19, 451464.
Heyeres, U. (2006). Adult sibling relationship questionnaire. Gruppendynamik und Organisationsberatung, 37, 215225.
Huinink, J., Brüderl, J., Nauck, B., Walper, S., Castiglioni, L., & Feldhaus, M. (2011). Panel analysis of intimate relationships and family dynamics (pairfam): Conceptual framework and design. Zeitschrift für Familienforschung [Journal of Family Research], 23, 77101.
Ivcevic, Z., & Brackett, M. (2014). Predicting school success: Comparing conscientiousness, grit, and emotion regulation ability. Journal of Research in Personality, 52, 2936.
Jackson, M., Goldthorpe, J. H., & Mills, C. (2005). Education, employers and class mobility. Research in Social Stratification and Mobility, 23, 333.
Jencks, C., & Tach, L. (2006). Would equal opportunity mean more mobility?. In Morgan, S., Grusky, D., & Fields, G. (Eds.), Mobility and inequality: Frontiers of research in sociology and economics (pp. 2358). Stanford, CA: Stanford University Press.
Kandler, C., Bleidorn, W., & Riemann, R. (2012). Left or right? sources of political orientation: The roles of genetic factors, cultural transmission, assortative mating, and personality. Journal of Personality and Social Psychology, 102, 633645.
Keller, M. C., Medland, S. E., Duncan, L. E., Hatemi, P. K., Neale, M. C., Maes, H. H. M., & Eaves, L. J. (2009). Modeling extended twin family data I: Description of the cascade model. Twin Research and Human Genetics, 12, 818.
Kendler, K. S. (2001). Twin studies of psychiatric illness: An update. Archives of General Psychiatry, 58, 10051014.
Kerbo, H. (2011). Social stratification and inequality (8th ed.). New York, NY: McGraw-Hill Education.
Kuhn, J.-T., Holling, H., & Freund, P. A. (2008). Begabungsdiagnostik mit dem Grundintelligenztest (CFT 20-R). Psychometrische Eigenschaften und Messäquivalenz. Diagnostica, 54, 184192.
Lareau, A. (2002). Invisible inequality: Social class and childrearing in black families and white families. American Sociological Review, 67, 747776.
Lucas, R. E. (2007). Adaptation and the set-point model of subjective well-being: Does happiness change after major life events?. Current Directions in Psychological Science, 16, 7579.
Marsh, H. W., Ellis, L. A., & Craven, R. G. (2002). How do preschool children feel about themselves? Unraveling measurement and multidimensional self-concept structure. Developmental Psychology, 38, 376393.
McAuley, E., Duncan, T., & Tammen, V. V. (1989). Psychometric properties of the intrinsic motivation inventory in a competitive sport setting: A confirmatory factor analysis. Research Quarterly for Exercise and Sport, 60, 4858.
Narusyte, J., Neiderhiser, J. M., D'Onofrio, B. M., Reiss, D., Spotts, E. L., Ganiban, J., & Lichtenstein, P. (2008). Testing different types of genotype-environment correlation: An extended children-of-twins model. Developmental Psychology, 44, 15911603.
Oishi, S., Kesebir, S., & Diener, E. (2011). Income inequality and happiness. Psychological Science, 22, 10951100.
Oniszczenko, W., Angleitner, A., Strelau, J., & Angert, T. (1993). The Questionnaire of Twins’ Physical Resemblance, University of Warsaw, Poland, and University of Bielefeld, Germany. Unpublished manuscript.
Pinker, S. (2003). The blank slate: The modern denial of human nature. New York: Penguin Books.
Plomin, R., & Crabbe, J. (2000). DNA. Psychological Bulletin, 126, 806828.
Plomin, R., DeFries, J. C., McClearn, G. E., & McGuffin, P. (2008). Behavioral genetics (5th ed.). New York: Worth Publishers.
Polderman, T. J. C., Benyamin, B., De Leeuw, C. A., Sullivan, P. F., Van Bochoven, A., Visscher, P. M., & Posthuma, D. (2015). Meta-analysis of the heritability of human traits based on fifty years of twin studies. Nature Genetics, 47, 702709.
Poropat, A. E. (2009). A meta-analysis of the five-factor model of personality and academic performance. Psychological Bulletin, 135, 322338
Price, T. S., Freeman, B., Craig, I., Petrill, S. A., Ebersole, L., & Plomin, R. (2000). Infant zygosity can be assigned by parental report questionnaire data. Twin Research and Human Genetics, 3, 129133.
Purcell, S. (2002). Variance components models for gene-environment interaction in twin analysis. Twin Research and Human Genetics, 5, 554571.
Reinecke, J., Stemmler, M., Sünkel, Z., Schepers, D., Weiss, M., Arnis, M., . . . Wittenberg, J. (2013). The development of deviant and delinquent behavior over the life course in the context of processes of social inequalities (SFB 882 Working Paper Series, 17). Bielefeld: DFG Research Center. Retrieved from
Richardson, M., Abraham, C., & Bond, R. (2012). Psychological correlates of university students’ academic performance: A systematic review and meta-analysis. Psychological Bulletin, 138, 353387. 6838
Robins, R. W., Hendin, H. M., & Trzesniewski, K. H. (2001). Measuring global self-esteem: Construct validation of a single-item measure and the Rosenberg self-esteem scale. Personality and Social Psychology Bulletin, 27, 151161.
Rosenberg, M. (1965). Society and the adolescent self-image. Princeton, NJ: Princeton University Press.
Roth, B., Hahn, E., & Spinath, F. M. (2016). Income inequality, life satisfaction, and economic worries. Social Psychological and Personality Science. Advance online publication.
Rowe, D. C., Jacobson, K. C., & Van den Oord, E. J. (1999). Genetic and environmental influences on vocabulary IQ: Parental education level as moderator. Child Development, 70, 11511162.
Runciman, W. G. (1972). Relative deprivation and social justice: A study of attitudes to social inequality in twentieth century England. Harmondsworth, UK: Penguin Books.
Rutter, M., Pickles, A., Murray, R., & Eaves, L. (2001). Testing hypotheses on specific environmental causal effects on behavior. Psychological Bulletin, 127, 291324.
Scarr, S. (1992). Developmental theories for the 1990s: Development and individual differences. Child Development, 63, 119.
Scarr, S. (1993). Biological and cultural diversity: The legacy of Darwin for development. Child Development, 64, 13331353.
Scarr-Salapatek, S. (1971). Race, social class, and IQ. Science, 174, 12851295.
Shanahan, M. J., Hofer, S. M., & Shanahan, L. (2003). Biological models of behavior and the life course. In Mortimer, J. T., & Shanahan, M. J. (Eds.), Handbook of the life course (pp. 597622). Boston: Springer.
Shavit, Y., & Blossfeld, H.-P. (Eds.). (1993). Persistent inequality: Changing educational attainment in thirteen countries (Social Inequality Series). Boulder, CO: Westview Press.
Smeeding, T., Erikson, R., & Jäntti, M. (2011). Introduction. In Smeeding, T., Erikson, R., & Jäntti, M. (Eds.), Persistence, privilege, and parenting (pp. 126). New York: Russell Sage Foundation.
Spinath, B., Stiensmeier-Pelster, J., Schöne, C., & Dickhäuser, O. (2002). Skalen zur Erfassung der Lern-und Leistungsmotivation (SELLMO). Göttingen: Hogrefe.
Spinath, F. M., & Wolf, H. (2006). CoSMoS and TwinPaW: Initial Report on two new German twin studies. Twin Research and Human Genetics, 9, 787790.
Steinmayr, R., & Spinath, B. (2010). Konstruktion und erste Validierung einer Skala zur Erfassung subjektiver schulischer Werte (SESSW). Diagnostica, 56, 195211.
Stiglitz, J. E., Sen, A., Fitoussi, J.-P. (Eds.). (2010). Report by the commission on the measurement of economic performance and social progress. Paris: Commission on the Measurement of Economic Performance and Social Progress. Retrieved from
Tucker-Drob, E. M., & Bates, T. C. (2016). Large cross-national differences in gene × socioeconomic status interaction on intelligence. Psychological Science, 27, 138149.
Tucker-Drob, E. M., Rhemtulla, M., Harden, K. P., Turkheimer, E., & Fask, D. (2011). Emergence of a gene × socioeconomic status interaction on infant mental ability between 10 months and 2 years. Psychological Science, 22, 125133.
Turkheimer, E. (2000). Three laws of behavior genetics and what they mean. Current Directions in Psychological Science, 9, 160164.
Turkheimer, E., Haley, A., Waldron, M., d'Onofrio, B., & Gottesman, I. I. (2003). Socioeconomic status modifies heritability of IQ in young children. Psychological Science, 14, 623628.
Visscher, P. M., Brown, M. A., McCarthy, M. I., & Jang, J. (2012). Five years of GWAS discovery. American Journal of Human Genetics, 90, 724.
Wagner, G. G., Frick, J. R., & Schupp, J. (2007). The German socio-economic panel study (SOEP): Evolution, scope and enhancements (SOEP papers on Multidisciplinary Panel Data Research 1, DIW). Berlin: The German Socio-Economic Panel (SOEP).
Wang, Z., Deater-Deckard, K., Petrill, S. A., & Thompson, L. A. (2012). Externalizing problems, attention regulation, and household chaos: A longitudinal behavioral genetic study. Development and Psychopathology, 24, 755769.
Warwick-Booth, L. (2013). Social inequality: A student's guide. London: Sage Publications.
Weiß, R. H., & Osterland, J. (2013). Grundintelligenztest Skala 1 — Revision: CFT 1-R. Göttingen: Hogrefe.
Welsch, H. (2007). Macroeconomics and life satisfaction: Revisiting the ;misery index. Journal of Applied Economics, 10, 237251.


What Drives the Development of Social Inequality Over the Life Course? The German TwinLife Study

  • Elisabeth Hahn (a1), Juliana Gottschling (a1), Wiebke Bleidorn (a2), Christian Kandler (a3), Marion Spengler (a4), Anna E. Kornadt (a3), Wiebke Schulz (a3), Reinhardt Schunck (a3), Tina Baier (a3), Kristina Krell (a3), Volker Lang (a3), Franziska Lenau (a1), Anna-Lena Peters (a3), Martin Diewald (a3), Rainer Riemann (a3) and Frank M. Spinath (a1)...


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