Preemption,leapfrogging and competition in patent races

This paper investigates when patent races will be characterized by vigorous competition and when they will degenerate into a monopoly. Undersome conditions, a firm with an arbitrarily small headstart can preempt its rivals. Such ‘?-preemption’ is shown to depend on whether a firm that is behind in the patent race, as measured by the expected time remaining until discovery, cant ‘leapfrog’ the competition and become the new leader. An example of an R&D game with random discovery illustrates how ?-preemption can occur when leapfrogging is impossible. A multi-stage R&D process allows leapfrogging and thus permits competition. A similar conclusion emerges in a model of a deterministic patent race with imperfect monitoring of rival firms' R&D investment activities.     

Subgame-perfect equilibria of finite- and infinite-horizon games

We show that subgame-perfect equilibria of infinite-horizon games arise as limits, as the horizon grows long and epsilon small, of subgame-perfect epsilon-equilibria of games which are truncated after a finite horizon. A number of applications show that this result provides a useful technique for analyzing the existence and uniqueness of infinite-horizon equilibria. We extend our result to the sequential equilibrium concept.     

Evaluating the flipped classroom: A randomized controlled trial

Despite recent interest in flipped classrooms, rigorous research evaluating their effectiveness is sparse. In this study, the authors implement a randomized controlled trial to evaluate the effect of a flipped classroom technique relative to a traditional lecture in an introductory undergraduate econometrics course. Random assignment enables the analysis to eliminate other potential explanations of performance differences between the flipped and traditional classrooms, while assignment of experimental condition by section and lesson enables improved statistical precision. The authors find that the flipped classroom increases scores on medium-term, high-stakes assessments by 0.16 standard deviation, with similar long-term effects for high-performing students. Estimated impacts are robust to alternative specifications accounting for possible spillover effects arising from the experimental design.     

Conditional Universal Consistency

Players choose an action before learning an outcome chosen according to an unknown and history-dependent stochastic rule. Procedures that categorize outcomes, and use a randomized variation on fictitious play within each category are studied. These procedures are “conditionally consistent:” they yield almost as high a time-average payoff as if the player knew the conditional distributions of actions given categories. Moreover, given any alternative procedure, there is a conditionally consistent procedure whose performance is no more than epsilon worse regardless of the discount factor. We also discuss cycles, and argue that the time-average of play should resemble a correlated equilibrium. Journal of Economic Literature Classification Numbers: C72, C73, C63, D83.     

The Influence of Board Diversity,Board Diversity Policies and Practices,and Board Inclusion Behaviors on Nonprofit Governance Practices

This study examines how and when nonprofit board performance is impacted by board diversity. Specifically, we investigate board diversity policies and practices as well as board inclusion behaviors as mediating mechanisms for the influence of age, gender, and racial/ethnic diversity of the board on effective board governance practices. The empirical analysis, using a sample of 1,456 nonprofit board chief executive officers, finds that board governance practices are directly influenced by the gender and racial diversity of the board and that board inclusion behaviors together with diversity policies and practices mediate the influence of the board’s gender and racial diversity on internal and external governance practices. Additionally, we found an interaction effect that indicates when boards have greater gender diversity, the negative impact of racial diversity on governance practices is mitigated. The findings suggest that board governance can be improved with more diverse membership, but only if the board behaves inclusively and there are policies and practices in place to allow the diverse members to have an impact.     

State of the cart

Food on wheels: it's here, there and everywhere. But while some operations rev up cart expansion plans, others have shifted into low gear. Here's an update on that '90s phenomenon: mobile merchandising.     

Historical Materialism and Agrarian History

Theory as History: Essays on Modes of Production and Exploitation , by Jairus Banaji. Leiden and Boston: Brill, 2010 . Historical Materialism Book Series Volume 25 . Pp. xix+406. €101 (hb). ISBN 978‐90‐04‐18368‐1 The collection provides an opportunity to assess Jairus Banaji's original and provocative contributions over more than three decades. This review tries to chart a path across the range of the essays as a whole, marked by three themes and their connections and possible disconnections: what constitutes modes of production; modes of production before capitalism and their histories; and characterizing and periodizing capitalism. Banaji's emphatic arguments for long histories/trajectories of commodity production, exchange and accumulation across different times and places, especially in estate agriculture and the circuits of merchant capital, traverse these three themes.     

Intergenerational Transfers and Insurance Policy Design

Abstract

Group health insurance policies offering an identical benefit package to every member of the group result in lower expected health benefits for younger cohorts than older cohorts. The dispersion in insurance benefits across age groups differs among insurance policies. Simulation results presented in this paper demonstrate that a shift from comprehensive health insurance to high-deductible health insurance decreases the share of expected benefits going to younger cohorts. An estimated 81.5% of the 23-to-32-year-old cohort is expected to receive less than $500 in health benefits during a year for one prototypical high-deductible health plan. Low expected benefits for younger relatively healthy cohorts could increase the number of younger individuals who eschew health coverage. Age-rated premiums are probably the most straightforward way to stimulate demand for high-deductible health plans among younger healthier individuals.