An association of evaluation professionals, to extend development evaluation practices by refining knowledge and expanding networks for development evaluation. IDEAS is one of the largest global associations for development evaluation, with a particular focus on developing and transitional economies. IDEAS' mission is to improve and extend the practice of development evaluation by refining methods, capacity and fostering its ownership and use,particularly in developing and transitional countries.It seeks to improve the practice of development evaluation and to promote it as an instrument of and accountability in making and implementing public policy.