This collection of papers from a conference held in honour of the economist Zvi Griliches is a tribute to his many contributions to current economic thought. Here, scholars of economic measurement address issues in the areas of productivity, price hedonics, capital measurement, diffusion of new technologies, and output and price measurement in 'hard-to-measure' sectors of the economy. The book furthers Griliches's vital work that changed the way economists think about the U.S. National Income and Product Accounts.