So much has been written recently about the individual, economic and social benefits of investing in early childhood development (ECD), that it is becoming a challenge to summarize these studies. However, ECD is an area that I’m increasingly involved in with my work at The World Bank. Among others, Nobel Laureate Economist, James Heckman and his colleagues have provided very convincing evidence of the benefits of early childhood interventions, including preschool education, on later individual and social outcomes (my colleague and fellow blogger, Jishnu Das looked at Heckman's work in his last blog post "Are Non-Cognitive Gains in Education More Important than Test-Scores?"). These benefits are substantial and varied, ranging from improved education outcomes for the individual, access to better jobs, higher wages, and even lower risks of engaging in criminal activities – which, of course benefits society as a whole. Moreover, investing early is a better investment than waiting until the child is older, because the costs of achieving comparable benefits through interventions later in life – remedial education in basic education, programs to target at-risk youth, and the like – are so much more costly and also less likely to have an impact.