Tiago Ribeiro

We present a study of consumer preferences for information in wine purchases. Consumers are presented with extra information in the form of qualitative product descriptions and quantitative expert ratings. We implement a discrete choice experiment in which we vary experimentally the presence of the descriptions and ratings and the values of the rat...

We use the approach of the partial-ownership literature to model the partial sale of a firm’s productive capacity. The framework is applied to the Portuguese outdoor advertising industry. We develop and estimate—with the use product-level data—a differentiated products equilibrium model that: (1) includes a wholesale and a retail level; and (2) all...

In this paper, we present a study of consumer preferences for mobile telecommunications plans and operator characteristics. The objective of the study was to identify consumer preferences for the following characteristics of mobile plans: the importance of using the same provider as friends and family (calling club network effects), the market shar...

Having become a standard tool, the reliability of quantitative merger assessment depends on the inclusion of all features of a transaction and of the remedies that are envisaged by the competent authorities. That requirement is sometimes difficult to satisfy with the tools currently used to carry out that quantitative assessment. On the basis of t...

The question of whether bundles of telecommunication services are relevant product markets is addressed. As a first step, demand for bundles of services, as well as the associated services, is modeled as a discrete choice problem with a potentially large number of products. A unique invoice based consumer level data set from Portuguese telecommunic...

This article, assesses the unilateral and coordinated effects on the Portuguese mort-gage loans market of the merger between the banks BCP and BPI. We use a rich cross-section of consumer level data and a discrete choice model to estimate the price elasticities of demand and the marginal costs of mortgage loans. Based on these estimates, we simulat...

This article, assesses the unilateral and coordinated effects on the Portuguese mortgage loans and short term corporate credit markets of the merger between the banks BCP and BPI. We use a rich cross-section of micro level data and a discrete choice model to estimate the price elasticities of demand and the marginal costs of mortgage loans and shor...

In Portugal, until recently, the telecommunications incumbent offered broadband access to the Internet, both through digital subscriber line and cable modem. We estimate the impact on broadband access to the Internet of the structural separation of these two businesses. Using a panel of consumer level data and a random effects mixed logit model, we...

In Portugal, until recently, the telecommunications incumbent offered broadband access to the Internet, both through digital subscriber line and cable modem. We estimate the impact on broadband access to the Internet of the structural separation of these two businesses. Using a panel of consumer level data and a random effects mixed logit model, we...

This paper provides statistical methods that permit the association of socioeconomic status and health to be partially unraveled in panel data by excluding some postulated causal paths, or delimiting their range of action. These methods are applied to the Asset and Health Dynamics of the Oldest Old (AHEAD) Panel to test for the absence of causal li...

The online database EconLit (within WebSpirs) allows to download economic references into a text file. For users of L A T E X, it seems convenient to transform the reference file into a format that BibTeX understands. The script elit2bib does this. We have written elit2bib to include some new, and in our view desir-able, features. Our script, progr...

Differential morbidity and mortality by socio-economic status (SES) have been observed over a wide range of data and populations, with higher SES associated with lower morbidity and mortality. The association has been attributed to differential access to medical services, to the impact of disabilities and medical costs on savings, and to genetic an...

Thesis (Ph. D. in Economics)--University of California, Berkeley, Spring 2003. Includes bibliographical references (leaves 55-58).