Anderson, K. G. (2006). How well does paternity confidence match actual paternity? Evidence from worldwide nonpaternity rates. Current Anthropology, 47, 513–520.
Beise, J. (2005). The helping and helpful grandmother: The role of maternal and paternal grandmothers in child mortality in the seventeenth and eighteenth century population of French settlers in Quebec, Canada. In E. Voland, A. Chasiotis, & W. Schiefenhövel (Eds.), Grandmotherhood: The evolutionary significance of the second half of female life (pp. 215–238). New Brunswick: Rutgers University Press.
Chan, C. G., & Elder Jr., G. H. (2000). Matrilineal advantage in grandparent–grandchild relations. The Gerontologist, 40, 179–190.
Crittenden, A., & Marlowe, F. (2008). Allomaternal care among the Hadza of Tanzania. Human Nature, 19, 249–262.
Danielsbacka, M., Tanskanen, A. O., Jokela, M., & Rotkirch, A. (2011). Grandparental child care in Europe: Evidence for preferential investment in more certain kin. Evolutionary Psychology, 9, 3–24.
Dubas, J. S. (2001). How gender moderates the grandparent–grandchild relationship: A comparison of kin-keeper and kin-selector theories. Journal of Family Issues, 22, 478–492.
Euler, H. A. (2011). Grandparents and extended kin. In C. A. Salmon & T. K. Shackelford (Eds.), The Oxford handbook of evolutionary family psychology (pp. 181–207). New York: Oxford University Press.
Euler, H. A., Hoier, S., & Rohde, P. (2009). Relationship–specific intergenerational family ties: An evolutionary approach to the structure of cultural transmission. In U. Schönpflug (Ed.), Cultural transmission: Psychological, developmental, social, and methodological aspects (pp. 70–91). New York: Cambridge University Press.
Euler, H. A., & Weitzel, B. (1996). Discriminative grandparental solicitude as reproductive strategy. Human Nature, 7, 39–59.
Gaulin, S. J. C., McBurney, D. H., & Brakeman-Wartell, S. L. (1997). Matrilateral biases in the investment of aunts and uncles. Human Nature, 8, 139–151.
Hawkes, K., O’Connell, J. F., Blurton Jones, N. G., Alvarez, H. P., & Charnov, E. L. (1998). Grandmothering, menopause, and the evolution of human life histories. Proceedings of the National Academy of Sciences of the United States of America, 95, 1336–1339.
Hill, K., & Hurtado, A. M. (2009). Cooperative breeding in south American hunter-gatherers. Proceedings of the Royal Society: Biological Sciences, 276, 3863–3870.
Hrdy, S. B. (2005). Cooperative breeders with an ace in the hole. In E. Voland, A. Chasiotis, & W. Schiefenhövel (Eds.), Grandmotherhood: The evolutionary significance of the second half of female life (pp. 295–317). New Brunswick: Rutgers University Press.
Kaptijn, R., Thomese, F., Liefbroer, A. C., & Silverstein, M. (2013). Testing evolutionary theories of discriminative grandparental investment. Journal of Biosocial Science, 45, 1–22.
King, V. (2003). The legacy of a grandparent's divorce: Consequences for ties between grandparents and grandchildren. Journal of Marriage and the Family, 65, 170–183.
King, V., Silverstein, M., Elder Jr., G. H., Bengtson, V. L., & Conger, R. D. (2003). Relations with grandparents: Rural Midwest versus urban southern California. Journal of Family Issues, 24, 1044–1069.
Kramer, K. L. (2010). Cooperative breeding and its significance to the demographic success of humans. Annual Review of Anthropology, 39, 417–436.
Laham, S. M., Gonsalkorale, K., & von Hippel, W. (2005). Darwinian grandparenting: Preferential investment in more certain kin. Personality and Social Psychology Bulletin, 31, 63–72.
Lee, E., Spitze, G., & Logan, J. R. (2003). Social support to parents-in-law: The interplay of gender and kin hierarchies. Journal of Marriage and the Family, 65, 396–403.
Leonetti, D. L., Nath, D. C., Hemam, N. S., & Neill, D. B. (2005). Kinship organisation and the impact of grandmothers on reproductive success among the matrilineal Khasi and patrilineal Bengali of Northeast India. In E. Voland, A. Chasiotis, & W. Schiefenhövel (Eds.), Grandmotherhood: The evolutionary significance of the second half of female life (pp. 194–214). New Brunswick: Rutgers University Press.
Marlowe, F. (2000). The patriarch hypothesis: An alternative explanation of menopause. Human Nature, 11, 27–42.
McBurney, D., Simon, J., Gaulin, S. J. C., & Geliebter, A. (2002). Matrilateral biases in the investment of aunts and uncles: Replication in a population presumed to have high paternity uncertainty. Human Nature, 13, 391–402.
Michalski, R. L., & Shackelford, T. K. (2005). Grandparental investment as a function of relational uncertainty and emotional closeness with parent. Human Nature, 16, 293–305.
Monserud, M. A. (2008). Intergenerational relationships and affectual solidarity between grandparents and young adults. Journal of Marriage and the Family, 70, 182–195.
Pashos, A. (2000). Does paternal uncertainty explain discriminative grandparental solicitude? A cross-cultural study in Greece and Germany. Evolution and Human Behavior, 21, 97–109.
Pashos, A., & McBurney, D. H. (2008). Kin relationships and the caregiving biases of grandparents, aunts and uncles: A two generational questionnaire study. Human Nature, 19, 311–330.
Pashos, A., Schwarz, S., & Bjorklund, D. F. (2016). Kin investment by step-grandparents–more than expected. Evolutionary Psychology, 14, 1–13. doi:10.1177/1474704916631213.
Perry, G., Daly, M., & Macfarlan, S. (2014). Maternal foster families provide more stable placements than paternal families. Children and Youth Services Review, 46, 155–159.
Ragsdale, G. (2004). Grandmothering in Cambridgeshire, 1770–1861. Human Nature, 15, 301–317.
Russell, R. J. H., & Wells, P. A. (1987). Estimating paternity confidence. Ethology and Sociobiology, 8, 215–220.
Salmon, C. A. (1999). On the impact of sex and birth order on contact with kin. Human Nature, 10, 183–197.
Schiefenhövel, W., & Grabolle, A. (2005). The role of maternal grandmothers in Tobriand adoptions. In E. Voland, A. Chasiotis, & W. Schiefenhövel (Eds.), Grandmotherhood. The evolutionary significance of the second half of female life (pp. 177–193). New Brunswick: Rutgers University Press.
Sear, R., & Mace, R. (2008). Who keeps children alive? A review of the effects of kin on child survival. Evolution and Human Behavior, 29, 1–18.
Sear, R., Mace, R., & McGregor, I. A. (2000). Maternal grandmothers improve the nutritional status and survival of children in rural Gambia. Proceedings of the Royal Society of London Series B, Biological Sciences, 267, 461–467.
Smith, M. S. (1988). Research in developmental sociobiology: Parenting and family behavior. In K. B. Mac-Donald (Ed.), Sociobiological perspectives on human development (pp. 271–292). New York: Springer.
Sorenson Jamison, C., Cornell, L. L., Jamison, P. L., & Nakazato, H. (2002). Are all grandmothers equal? A review and a preliminary test of the “grandmother hypothesis” in Tokugawa Japan. American Journal of Physical Anthropology, 119, 67–76.
Strassmann, B. I., & Garrard, W. M. (2011). Alternatives to the grandmother hypothesis: A meta-analysis of the association between grandparental and grandchild survival in patrilineal populations. Human Nature, 22, 201–222.
Voland, E., & Beise, J. (2002). Opposite effects of maternal and paternal grandmothers on infant survival in historical Krummhörn. Behavioral Ecology and Sociobiology, 52, 435–443.