Feedback mechanisms that allow partners to rate each other after a transaction are considered crucial for the success of anonymous internet trading platforms. We document an asymmetry in the feedback behavior on eBay, propose an explanation based on the micro structure of the feedback mechanism...

In practical activity, the procurer can often decide to split the supply of a product in multiple contracts, or lots. This paper surveys some competitive tendering procedures for multiple contracts and discusses how the choice of the most appropriate format of competitive tendering for the...

I find that current US's and EU's Antitrust laws -- in particular their "moderate"' leniency programmes that only reduce or at best cancel sanctions for price-fixing firms that self-report -- may make collusion enforceable even in one-shot competitive interactions, like Bertrand oligopolies and...

We explore empirically the impact of buyer quality on public procurement outcomes. Using purchases data (Federal Procurement Data System) and survey data (Federal Employee Viewpoint Survey) from US federal agencies, we find that procurement quality is highly heterogeneous across different...

We study the relationship between collusion and corruption in a stylized model of repeated procurement where the cost of reporting corrupt bureaucrats gives rise to a free riding problem. As in Dixit (2015, 2016), cooperation among honest suppliers alleviates free-riding in reporting. However,...

Centralization of public procurement can lower prices for the government's direct purchase of goods and services. This paper focuses on indirect savings. Public administrations that do not procure directly through a central procurement agency might benefit from the availability of...

eBay’s feedback mechanism is considered crucial to establishing and maintaining trust on the world’s largest trading platform. The effects of a user’s reputation on the probability of sale and on prices are at the center of a large number of studies. More recent theoretical...

To stay on top of global competition, firms and governments often need to acquire innovative goods and services, including ideas and research, from their strategic suppliers. A careful design of procurement policy is crucial to make potential suppliers generate and sell the most suitable...

The number and the size of lots influence the degree of competition in a tendering procedure mainly through two channels, both related to the market structure: the number of participants and their bidding behaviour. This paper discusses the relation between lots, participation, competition and...