Prepared by the OECD Directorate for Science, Technology and Industry (STI), the STI Review, published twice yearly, presents studies of interest to science, technology and industry policy makers and analysts, with particular emphasis on cross-country comparisons, quantitative descriptions of new trends and identification of recent and future policy problems. Because of the nature of OECD work, the STI Review explores structural and institutional change at global level as well as at regional, national and sub-national levels. Issues often focus on particular themes, such as surveys on firm-level innovation behaviour and technology-related employment problems.