Using Genetic Markers as Instrumental Variables to Unravel the Link between Education and Fertility • Nicola Barban, University of Groningen ; Melinda Mills, University of Groningen ; Jornt Mandemakers, University of Groningen ; Harold Snieder, University of Groningen

Parental Social Disparities in Epigenetic Regulation of Newborns' Imprinted Genes Related to Gestational Growth and Later-Life Health • Katherine King, U.S. Environmental Protection Agency and Duke University ; Susan Murphy, Duke University ; Cathrine Hoyo, Duke University

Kin Influences on Fertility: A Theoretical Framework Tested with a Review of the Literature • Rebecca Sear, London School of Hygiene and Tropical Medicine (LSHTM) ; Cristina Moya, London School of Hygiene and Tropical Medicine (LSHTM)

Costs of Reproduction and Maternal Depletion in a High Fertility and Mortality Population • Michael D. Gurven, University of California, Santa Barbara ; Megan E. Costa, University of Pennsylvania ; Daniel Eid R., Universidad Mayor San Simon, Bolivia ; Jonathan Stieglitz, University of New Mexico ; Bret Beheim, University of New Mexico ; Benjamin Trumble, University of California, Santa Barbara ; Hillard S. Kaplan, University of New Mexico