Lately, a new trend has specially outreached on the Information Society that of Social Computing. Starting from a citizen-focused model of health seamless provision of services, this paper analyses some current Web 2.0 initiatives on the Health sector. These opportunities would not be fully...

Traditional trade models ignoring the dimension of product quality generally lead to excessively low trade price elasticities. In this paper, we show that higher estimated trade price elasticities, more in conformity with theory, can be obtained by controlling product quality in trade equations....

Using a unique dataset of art auctions on eBay, we conduct an empirical analysis of the added value of an auction's charity status. The panel structure of our dataset allows us to employ fixed effects techniques to control for observed and unobserved differences across auctions. The existing...

We use store-level data to document the exact process of changing prices and to directly measure menu costs at five multi-store supermarket chains. We show that changing prices in these establishments is a complex process, requiring dozens of steps and a nontrivial amount of resources. The menu...

We combine two data sets to study price rigidity. The first consists of weekly time series of retail, wholesale, and spot prices for twelve products. These time series contain two exogenous cost shocks. We find that prices exhibit more rigidity in response to the second shock than the first. The...

We empirically study the price adjustment process at multiproduct retail stores. We use a unique store level data set for five large supermarket and one drugstore chains in the U.S., to document the exact process required to change prices. Our data set allows us to study this process in great...