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On Taking a Skewed Risk More than Once

By Sebastian Ebert and Mats Köster

American Economic Journal: Microeconomics, May 2026

Penny-picking refers to the often-observed phenomenon of repeatedly taking negatively skewed risks and seems directly at odds with evidence on (positive-)skewness-seeking as observed in static settings. We show that penny-picking may not only occur despit...

Quality and Imperfect Competition

By Germain Gaudin

American Economic Journal: Microeconomics, May 2026

We study quality distortions when firms hold market power. We develop a model allowing for flexible functional forms of demand in order to extend Spence's (1975) monopoly analysis to imperfect competition. We show that quality distortions are determined b...

The Organization of Innovation: Incomplete Contracts and the Outsourcing Decision

By Thomas Jungbauer, Sean Nicholson, June Pan, Michael Waldman, and Lucy Xiaolu Wang

American Economic Journal: Microeconomics, May 2026

Why do firms outsource research and development (R&D) for some products while conducting R&D in-house for similar ones? An innovating firm risks cannibalizing its existing products. The more profitable these products, the more the firm wants to limit ...

The Effect of Mergers on Innovation

By Kaustav Das, Tatiana Mayskaya, and Arina Nikandrova

American Economic Journal: Microeconomics, May 2026

We study the effect of a merger on R&D activity in a dynamic model with uncertainty about the feasibility of innovation. The merger has three effects: It may reduce the number of follow-up innovations (cannibalization effect), increase the probability of ...

Sharing Model Uncertainty

By Chiaki Hara, Sujoy Mukerji, Frank Riedel, and Jean-Marc Tallon

American Economic Journal: Microeconomics, May 2026

This paper examines efficient allocations in economies where consumers exhibit heterogeneous smooth ambiguity preferences and face model uncertainty with a common set of identifiable models. Aggregate endowment is ambiguous. We characterize economies wher...