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Exact Distribution Theory in Structural Estimation with an Identity

Phillips, Peter C.B. - Cowles Foundation for Research in Economics, Yale University - 2007

Some exact distribution theory is developed for structural equation models with and without identities. The theory includes LIML, IV and OLS. We relate the new results to earlier studies in the literature, including the pioneering work of Bergstrom (1962). General IV exact distribution formulae...

Persistent link: https://www.econbiz.de/10005463867

A Remark on Bimodality and Weak Instrumentation in Structural Equation Estimation

Phillips, Peter C. B. - Cowles Foundation for Research in Economics, Yale University - 2005

In a simple model composed of a structural equation and identity, the finite sample distribution of the IV/LIML estimator is always bimodal and this is most apparent when the concentration parameter is small. Weak instrumentation is the energy that feeds the secondary mode and the coefficient in...

Persistent link: https://www.econbiz.de/10005593466

Market Diffusion with Two-Sided Learning

Bergemann, Dirk; Valimaki, Juuso - Cowles Foundation for Research in Economics, Yale University - 1996

The diffusion of a new product of uncertain value is analyzed in a duopolistic market in continuous time. The two sides of the market, buyers and sellers, learn the true value of the new product over time as a result of experimentation. Buyers have heterogeneous preferences over the products and...

Persistent link: https://www.econbiz.de/10005463873

Monopoly Pricing of Experience Goods

Bergemann, Dirk; Valimaki, Juuso - Cowles Foundation for Research in Economics, Yale University - 2004

learning and turnover among buyers. …

Persistent link: https://www.econbiz.de/10004990828

Collaborating

Bonatti, Alessandro; Horner, Johannes - Cowles Foundation for Research in Economics, Yale University - 2009

This paper examines moral hazard in teams over time. Agents are collectively engaged in an uncertain project, and their individual efforts are unobserved. Free-riding leads not only to a reduction in effort, but also to procrastination. The collaboration dwindles over time, but never ceases as...

Persistent link: https://www.econbiz.de/10005000297

Market Experimentation and Pricing

Bergemann, Dirk; Valimaki, Juuso - Cowles Foundation for Research in Economics, Yale University - 1996

We present a continuous-time model of Bayesian learning in a duopolistic market. Initially the value of one product … externality leads to too much learning. Buyers do not consider the impact of their experimentation on other buyers while the … and allocations in this two-sided learning model. The analysis is presented for a finite number of buyers as well as for a …

Persistent link: https://www.econbiz.de/10005093954

The Financing of Innovation: Learning and Stopping

Bergemann, Dirk; Hege, Ulrich - Cowles Foundation for Research in Economics, Yale University - 2001

This paper considers the financing of a research project under uncertainty about the time of completion and the probability of eventual success. The uncertainty about future success gradually diminishes with the arrival of addtional funding. The entrepreneur controls the funds and can divert...

Persistent link: https://www.econbiz.de/10005087360

Communication and Learning

Anderlini, Luca; Gerardi, Dino; Lagunoff, Roger - Cowles Foundation for Research in Economics, Yale University - 2008

makers. We ask whether there exist "full learning'' equilibria -- ones in which the players' posterior beliefs eventually …. Surprisingly, in the latter case full learning may be impossible even in the limit as all players become infinitely patient. We …. In this case full learning equilibria exist. …

Persistent link: https://www.econbiz.de/10005593160

Experimentation in Markets

Bergemann, Dirk; Valimaki, Juuso - Cowles Foundation for Research in Economics, Yale University - 1999

We present a model of entry and exit with Bayesian learning and price competition. A new product of initially unknown …

Persistent link: https://www.econbiz.de/10005593440

Wald Revisited: The Optimal Level of Experimentation

Moscarini, Giuseppe; Smith, Lones - Cowles Foundation for Research in Economics, Yale University - 1998

This paper revisits Wald's (1947) sequential experimentation paradigm, now assuming that an impatient decision maker can run variable-size experiments each period at some increasing and strictly convex cost before finally choosing an irreversible action. We translate this natural discrete time...

Persistent link: https://www.econbiz.de/10005762616