TY - JOUR AU - Aizer,Anna AU - Stroud,Laura AU - Buka,Stephen TI - Maternal Stress and Child Outcomes: Evidence from Siblings JF - National Bureau of Economic Research Working Paper Series VL - No. 18422 PY - 2012 Y2 - September 2012 UR - http://www.nber.org/papers/w18422 L1 - http://www.nber.org/papers/w18422.pdf N1 - Author contact info: Anna Aizer Brown University Department of Economics 64 Waterman Street Providence, RI 02912 Tel: 401/863-9529 Fax: 401/863-1970 E-Mail: anna_aizer@brown.edu Laura Stroud Centers for Behavioral and Preventive Medicine Brown Medical School and The Miriam Hospital Coro West, Suite 500, 1 Hoppin Street Providence RI 02903 E-Mail: lstroudri@gmail.com Stephen Buka Brown University - Dept of Epidemiology Box G-S121-2 121 Providence, RI 02912 E-Mail: stephen_buka@brown.edu AB - We study how maternal stress affects offspring outcomes. We find that in-utero exposure to elevated levels of the stress hormone cortisol negatively affects offspring cognition, health and educational attainment. These findings are based on comparisons between siblings which limits variation to short-lived shocks and controls for unobserved differences between mothers that could bias estimates. Our results are consistent with recent experimental results in the neurobiological literature linking exogenous exposure to stress hormones in-utero with declines in offspring cognitive, behavioral and motor development. Moreover, we find that not only are mothers with low levels of human capital characterized by higher and more variable cortisol levels, but that the negative impact of elevated cortisol is greater for them. These results suggest that prenatal stress may play a role in the intergenerational persistence of poverty. ER -