The Encyclopedia on Early Childhood Development produced by the Centre of Excellence for Early Childhood Development is now available as a free online resource. The Encyclopedia, intended primarily for policy-makers, service providers and parents, brings together articles written by internationally renowned experts on topics having to do with the psychosocial development of young children, from conception to the age of five. Each of the 33 topics addressed is explored from three perspectives: development, services and policies. Key points are summarized in a user friendly format that will be most useful to practitioners and planners.