The study tests whether strong rather than weak ties account for small business growth in Turkey. Data were collected by means of a questionnaire filled out by the owners of small firms operating in four cities. Growth is comprised of two main areas, production expansion and knowledge...

When, on 21st September 2006, 'The Economist' compared incumbent telecommunication operators with dinosaurs that could soon face extinction, most readers were ready to agree. The mixture of declining revenues and fierce competition was believed to shake the market and soon to dethrone former...

Entrepreneurs face higher commercialization costs than incumbents. We show that this implies that entrepreneurs will choose more risky projects than incumbents, aiming to reduce their high expected marginal commercialization cost. However, entrepreneurs may select too safe projects from a social...

This chapter reviews academic research on the connections between agglomeration and innovation. We first describe the conceptual distinctions between invention and innovation. We then describe how these factors are frequently measured in the data and some resulting empirical regularities....

We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance over which attraction forces operate. Overlapping firm interactions yield agglomeration clusters...

Exit of venture-backed firms often takes place through sales to large incumbent firms. We show that in such an environment, venture-backed firms have a stronger incentive to develop basic innovations into commercialized innovations than incumbent firms, due to strategic product market effects....

We study the effects of managerial practices in schools on students' outcomes. We measure managerial practices using the World Management Survey, a methodology that enables us to construct robust measures of management quality comparable across countries. We find substantial heterogeneity in...

We study the effects of managerial practices in schools on students' outcomes. We measure managerial practices using the World Management Survey, a methodology that enables us to construct robust measures of management quality comparable across countries.We find substantial heterogeneity in...

We study how managerial practices of school principals affect student performance and aspirations. We link administrative data on secondary Italian students to the management scores of their school principals in 2011 and 2015 based on the World Management Survey methodology. The frequent...

We study how managerial practices of school principals affect student performance and aspirations. We link administrative data on secondary Italian students to the management scores of their school principals in 2011 and 2015 based on the World Management Survey methodology. The frequent...