This thesis addresses theoretical and empirical questions related to network economics. In particular, it analyze network effects and switching costs in the mobile telecommunications industry. The first chapter analyzes competition in a two-period differentiated-products duopoly in the presence...

This article assesses the unilateral effects on prices of a merger in the Portuguese mobile telephony market. We use aggregate quarterly data from 1999 to 2005 and a nested logit model to estimate the price elasticities of demand and the marginal costs of subscription of mobile telephony. Given...

Financial institutions are expected to play a crucial role in reallocating resources in favor of industries facing greater global and local shocks to growth opportunities. Fisman and Love, in their paper entitled “Financial development and intersectoral allocation: A new approach”, argue...

The measurement of productivity is a complex task. The OECD has recently released a comprehensive manual or guide to the measurement of industry-level and aggregate productivity. In the fifth article, Paul Schreyer from the OECD and the author of the OECD productivity manual provides an overview...

We study how Foreign Direct Investment (FDI) measures gross fixed capital formation in foreign-owned companies. Our data include firm-level information on FDI inflows and real investment (Gross Fixed Capital Formation) by foreign-owned companies located in Finland. Our results suggest that the...

Micro-level empirical research has begun to obtain important results on the effects of currency variations on firms' survival. To date, the literature has lacked detailed analysis of the effects of exchange rates on firms' survival behavior in emerging markets due to a scarcity of firm level...

In this paper, we explore whether information from firm-level data can improve forecasts of aggregate productivity growth. We generate firm-level productivity measures and aggregate them into time-series components that capture within-firm productivity and the productivity contribution of...

This study investigates whether firm-level accrual mispricing exists and if such mispricing is persistent. Our results show both under and overpricing of accruals that persevere. Specifically, we show that a trading strategy going a dollar long (short) in underpriced (overpriced) accrual firms...

This paper uses firm-level panel data of on-the-job training to estimate its impact on productivity and wages. To this end, we apply and extend the control function approach for estimating production functions, which allows us to correct for the endogeneity of input factors and training. We find...