et al. (2016). Analysis of shared heritability in common disorders of the brain. bioRxiv. doi:10.1101/048991.
Berkman, LF, Berkman, CS, Kasl, S, Freeman, DH Jr., Leo, L, Ostfeld, AD, Cornoni-Huntley, J, Brody, J (1986). Depressive symptoms in relation to physical health and functioning in the elderly. American Journal of Epidemiology
Bierut, LJ, Heath, AC, Bucholz, KK, Dinwiddie, SH, Madden, PA, Statham, DJ, Dunne, MP, Martin, NG (1999). Major depressive disorder in a community-based twin sample: are there different genetic and environmental contributions for men and women?
Archives of General Psychiatry
Blazer, DG (2003). Depression in late life: review and commentary. Journal of Gerontology Series A: Biological Sciences and Medical Sciences
Carmelli, D, Swan, GE, Kelly-Hayes, M, Wolf, PA, Reed, T, Miller, B (2000). Longitudinal changes in the contribution of genetic and environmental influences to symptoms of depression in older male twins. Psychology and Aging
Christensen, K, Holm, NV, McGue, M, Corder, L, Vaupel, JW (1999). A Danish population-based twin study on general health in the elderly. Journal of Aging and Health
Djernes, JK (2006). Prevalence and predictors of depression in populations of elderly: a review. Acta Psychiatrica Scandinavia
Ehrlich, BS, Isaacowitz, DM (2002). Does subjective well-being increase with age?
Perspectives in Psychology
Finkel, D, McGue, M (1993). The origins of individual differences in memory among the elderly: a behavior genetic analysis. Psychology and Aging
Finkel, D, Pedersen, NL (2004). Processing speed and longitudinal trajectories of change for cognitive abilities: The Swedish Adoption/Twin Study of Aging. Aging, Neuropsychology, and Cognition. Special Issue: Longitudinal Studies of Cognitive Aging
Fiske, A, Wetherell, JL, Gatz, M (2009). Depression in older adults. Annual Review of Clinical Psychology
Forlani, C, Morri, M, Ferrari, B, Dalmonte, E, Menchetti, M, De Ronchi, D, Atti, AR (2014). Prevalence and gender differences in late-life depression: a population-based study. American Journal of Geriatric Psychiatry
Franz, CE, Lyons, MJ, O'Brien, R, Panizzon, MS, Kim, K, Bhat, R, Grant, MD, Toomey, R, Eisen, S, Xian, H, Kremen, WS (2011). A 35-year longitudinal assessment of cognition and midlife depression symptoms: the Vietnam Era Twin study of aging. The American Journal of Geriatric Psychiatry
Gatz, M, Pedersen, NL, Plomin, R, Nesselroade, JR, McClearn, GE (1992). The importance of shared genes and shared environments for symptoms of depression in older adults. Journal of Abnormal Psychology
Gatz, M, Petkus, A, Reynolds, CA, Franz, C, Kaprio, J, Christensen, K, for the IGEMS Consortium (2015
a). Age moderation of individual differences in chronic medical illness burden [Abstract]. Behavior Genetics
Gatz, M, Reynolds, CR, Finkel, D, Hahn, CJ, Zhou, Y, Zavala, C (2015b). Data harmonization in aging research: not so fast. Journal of Experimental Aging Research
Gillespie, NA, Kirk, KM, Evans, DM, Heath, AC, Hickie, IB, Martin, NG (2004). Do the genetic or environmental determinants of anxiety and depression change with age? A longitudinal study of Australian twins. Twin Research
Gold, CH, Malmberg, B, McClearn, GE, Pedersen, NL, Berg, S (2002). Gender and health: a study of older unlike-sex twins. Journals of Gerontology: Series B: Psychological Sciences and Social Sciences
Heath, AC, Kessler, RC, Neale, MC, Hewitt, JK, Eaves, LJ, Kendler, KS (1993). Testing hypotheses about direction of causation using cross sectional family data. Behavior Genetics
Johnson, W (2007). Genetic and environmental influences on behavior: capturing all the interplay. Psychological Review
Johnson, W, McGue, M, Gaist, D, Vaupel, JW, Christensen, K (2002). Frequency and heritability of depression symptomatology in the second half of life: evidence from Danish twins over 45. Psychological Medicine
Judd, LL, Schettler, PJ, Akiskal, HS (2002). The prevalence, clinical relevance, and public health significance of subthreshold depressions. Psychiatric Clinics of North America
Kaprio, J (2013). The Finnish Twin Cohort Study: an update. Twin Research and Human Genetics
Kaprio, J, Koskenvuo, M (2002). Genetic and environmental factors in complex diseases: the older Finnish Twin Cohort. Twin Research and Human Genetics
Kendler, KS, Gardner, CO (2014). Sex differences in the pathways to Major Depression: a study of opposite-sex twin pairs. The American Journal of Psychiatry
Kendler, KS, Gardner, CO, Neale, MC, Prescott, CA (2001). Genetic risk factors for major depression in men and women: similar or different heritabilities and same or partly distinct genes?
Kendler, KS, Gatz, M, Gardner, CO, Pedersen, NL (2006). A Swedish national twin study of lifetime major depression. American Journal of Psychiatry
Kendler, KS, Thornton, LM, Gilman, SE, Kessler, RC (2000). Sexual orientation in a U.S. national sample of twin and nontwin sibling pairs. American Journal of Psychiatry
Kessler, RC, Foster, C, Webster, PS, House, JS (1992). The relationship between age and depressive symptoms in two national surveys. Psychology and Aging
Korhonen, T, Broms, U, Varjonen, J, Romanov, K, Koskenvuo, M, Kinnunen, T, Kaprio, J (2007). Smoking behaviour as a predictor for depression among Finnish men and women – a prospective study of adult twins. Psychological Medicine
Kremen, WS, Thompson-Brenner, H, Leung, YJ, Grant, MD, Franz, CE, Eisen, SA, Jacobson, KC, Boake, C, Lyons, MJ (2006). Genes, environment, and time: the Vietnam Era Twin Study of Aging (VETSA). Twin Research and Human Genetics
McArdle, JJ, Hamagami, F (2003). Structural equation models for evaluating dynamic concepts within longitudinal twin analyses. Behavioral Genetics
McClearn, GE, Johansson, B, Berg, S, Pedersen, NL, Ahern, F, Petrill, SA, Plomin, R (1997). Substantial genetic influence on cognitive abilities in twins 80 or more years old. Science
McGue, M, Christensen, K (1997). Genetic and environmental contributions to depression symptomatology: evidence from Danish twins 75 years of age and older. Journal of Abnormal Psychology
Meeks, S, Murrell, SA, Mehl, RC (2000). Longitudinal relationships between depressive symptoms and health in normal older and middle-aged adults. Psychology and Aging
Neale, M, Hunter, M, Pritikin, JN, Zahery, M, Brick, TR, Kickpatrick, RM, Estabrook, R, Bates, TC, Maes, H, Boker, SM (2016). Open Mx 2.0: extended structural equation and statistical modeling. Psychometrika
Neale, M, Roysamb, E, Jacobson, K (2006). Multivariate genetic analysis of sex limitation and GxE interaction. Twin Research and Human Genetics
Neiderhiser, JM, Lichtenstein, P (2008). The Twin and Offspring Study in Sweden: advancing our understanding of genotype-environment interplay by studying twins and their families. Acta Psychologica Sinica
Pedersen, NL, Christensen, K, Dahl, A, Finkel, D, Franz, C, Gatz, M, Horwitz, BN, Johansson, B, Johnson, W, Kremen, WS, Lyons, MJ, Malmberg, B, McGue, M, Neiderhiser, JM, Peterson, I, Reynolds, CA (2013). IGEMS: The Consortium on Interplay of Genes and Environment across Multiple Studies. Twin Research and Human Genetics
Radloff, LS (1977). The CES – D scale: a self – report depressive mood scale for research in the general population. Applied Psychological Measurement
Roth, M, Tym, E, Mountjoy, CQ, Huppert, FA, Hendrie, H, Verma, S, Goodard, R (1986). CAMDEX: a standardised instrument for the diagnosis of mental disorder in the elderly with special reference to the early detection of dementia. British Journal of Psychiatry
Salvi, F, Miller, MD, Grilli, A, Giorgi, R, Towers, AL, Morichi, V, Spazzafumo, L, Mancinelli, L, Espinosa, E, Rappelli, A, Dessì-Fulgheri, P (2008). A manual of guidelines to score the modified cumulative illness rating scale and its validation in acute hospitalized elderly patients. Journal of the American Geriatrics Society
SAS Institute Inc. (2013). SAS 9.4. SAS Institute Inc.: Cary, NC.
Schnittker, J (2014). Natural Symptoms? The Intersection of Social, Biological, and Genetic Determinants of Depression in Later Life. Working paper: University of Pennsylvania Population, Aging Research Center. PARC Working Paper Series, WPS 14–01.
Scott, KM, Lim, C, Al-Hamzawi, A, Alonso, J, Bruffaerts, R, Caldas-de-Almeida, JM, Florescu, S, de Girolamo, G, Hu, C, de Jonge, P, Kawakami, N, Medina-Mora, ME, Moskalewicz, J, Navarro-Mateu, F, O'Neill, S, Piazza, M, Pasada-Villa, J, Torres, Y, Kessler, RC (2016). Association of mental disorders with subsequent chronic physical conditions: world mental health surveys from 17 countries. JAMA Psychiatry
Skytthe, A, Christiansen, L, Kyvik, KO, Bødker, FL, Hvidberg, L, Petersen, I, Nielsen, MMF, Bingley, P, Hjelmborg, J, Tan, Q, Holm, NV, Vaupel, JW, McGue, M, Christensen, K (2013). The Danish Twin Registry: linking surveys, national registers, and biological information. Twin Research and Human Genetics
Sonnenberg, CM, Beekman, ATF, Deeg, DJH, van Tilburg, W (2000). Sex differences in late life depression. Acta Psychiatrica Scandinavica
Steptoe, A (2007). Depression and Physical Illness. Cambridge University Press: New York.
Sutin, AR, Terracciano, A, Milaneschi, Y, An, Y, Ferrucci, L, Zonderman, AB (2013). The trajectory of depressive symptoms across the adult lifespan. JAMA Psychiatry
Takkinen, S, Tolvanen, A, Kaprio, J, Berg, S, Koskenvuo, M, Rantanen, T (2004). The genetic and environmental effects on depressive symptoms among older female twins. Twin Research
Turkheimer, E, Harden, KP (2014). Behavior genetic research methods: testing quasi-causal hypotheses using multivariate twin data. In Handbook of Research Methods in Personality and Social Psychology (ed. Reis, H. T. and Judd, C. M.), pp. 159–187. John Wiley: New York.
Twenge, JM (2015). Time period and birth cohort differences in depressive symptoms in the U.S., 1982–2013. Social Indicators Research
van der Sluis, S, Posthuma, D, Dolan, CV (2012). A note on false positives and power in GxE modelling of twin data. Behavior Genetics
Van Hulle, C, Lahey, B, Rathouz, P (2013). Operating characteristics of alternative statistical methods for detecting gene-by-measured environment interaction in the presence of gene-environment correlation in twin and sibling studies. Behavior Genetics