Understanding the mechanisms through which an influential early childhood program boosted adult outcomes. Heckman J, Savelyev P. J Heckman, R Pinto, P Savelyev - American Economic Review, 2013 - aeaweb.org GSID: fd47u-RQf5sJ
Handbook of early literacy research. Dickinson DK. SB Neuman, DK Dickinson - 2003 - books.google.com GSID: ctRIYI_myP8J