Decision Making & Negotiations

Post-2008 financial regulatory changes largely have been a failure. They have produced high compliance costs, while constructing regulatory mechanisms that are unlikely to achieve their intended objectives. Furthermore, financial regulation increasingly has adopted processes that are inconsistent with adherence to the rule of law, which not only threaten the fundamental norms on which our democracy is founded but also undermine the effectiveness of regulation.

Recent bank regulations have imposed large compliance costs on banks of all sizes, and have increased the costs of borrowing to both consumers and companies. But in this summary of his recent book, the author argues that the problems with banking system regulation go well beyond the excessive costs. Indeed, Dodd-Frank and other post-crisis regulatory reforms have failed to address the major shortcomings that produced the crisis of 2007–2009. Most importantly, excessive housing finance risk was not dealt with adequately, and is already on the rise again.

While it is generally believed that insulating cost allocations help managers focus their attention on their own actions and shield them from the actions of others, non-insulating schemes can have appeal by encouraging teamwork and/or mutual monitoring among divisions. In this paper, we demonstrate that non-insulating allocations can induce fruitful cooperation among parties even when teamwork and mutual monitoring are nonissues.

This research considers how marketers can encourage or 'nudge' consumers to transmit word of mouth (WOM), such as referrals or recommendations to friends, in a manner that helps reach, inform, or influence large numbers of consumers quickly, which is an outcome referred to as faster diffusion. Building on studies showing diffusion is faster when higher-connectivity people are involved; the authors propose a mechanism based on network externalities that encourages regular customers to select receivers who have higher levels of social connectivity.

The incentive contracts of delegated investment managers may have unintended negative consequences for asset prices. I show that managers who are compensated for relative performance optimally shift their portfolio weights towards those of the benchmark when volatility rises, putting downward price pressure on overweight stocks and upward pressure on underweight stocks. In quarters when volatility rises most (top quintile), a portfolio of aggregate-underweight minus aggregate-overweight stocks returns 3% to 8% per quarter depending on the risk adjustment.

We introduce a tractable dynamic monitoring technology into a continuous-time moral hazard problem and study the optimal long-term contract between principal and agent. Monitoring adds value by allowing the principal to reduce the intensity of performance-based incentives, reducing the likelihood of costly termination. We present a novel characterization of optimal dynamic incentive provision when performance-based incentives may decline continuously to zero. Termination happens in equilibrium only if its costs are relatively low.

We develop a tractable general equilibrium framework of housing and mortgage markets with aggregate and idiosyncratic risks, costly liquidity and strategic defaults, empirically relevant informational asymmetries, and endogenous mortgage design. We show that adverse selection plays an important role in shaping the form of an equilibrium contract. If borrowers' homeownership values are known, aggregate wages and house prices determine the optimal state-contingent mortgage payments, which efficiently reduces the costs of liquidity default.

A monopolist offers a product to a market of consumers with heterogeneous quality preferences. Although initially uninformed about the product quality, they learn by observing past purchase decisions and reviews of other consumers. Our goal is to analyze the social learning mechanism and its effect on the seller's pricing decision. This analysis borrows from the literature on social learning and on pricing and revenue management.