TY - JOUR AU - Black,Sandra E. AU - Devereux,Paul J. AU - Salvanes,Kjell TI - From the Cradle to the Labor Market? The Effect of Birth Weight on Adult Outcomes JF - National Bureau of Economic Research Working Paper Series VL - No. 11796 PY - 2005 Y2 - November 2005 UR - http://www.nber.org/papers/w11796 L1 - http://www.nber.org/papers/w11796.pdf N1 - Author contact info: Sandra Black Department of Economics University of Texas Austin, TX 78712 Tel: 512-475-8519 E-Mail: sblack@austin.utexas.edu Paul J. Devereux School of Economics and Geary Institute University College Dublin Belfield, Dublin 4 Ireland E-Mail: devereux@ucd.ie Kjell Salvanes Department of Economics Norwegian School of Economics Hellev. 30, N-5035 Bergen Norway E-Mail: kjell.salvanes@nhh.no AB - Lower birth weight babies have worse outcomes, both short-run in terms of one-year mortality rates and longer run in terms of educational attainment and earnings. However, recent research has called into question whether birth weight itself is important or whether it simply reflects other hard-to-measure characteristics. By applying within twin techniques using a unique dataset from Norway, we examine both short-run and long-run outcomes for the same cohorts. We find that birth weight does matter; very small short-run fixed effect estimates can be misleading because longer-run effects on outcomes such as height, IQ, earnings, and education are significant and similar in magnitude to OLS estimates. Our estimates suggest that eliminating birth weight differences between socio-economic groups would have sizeable effects on the later outcomes of children from poorer families. ER -