Paradise Lost and Found? The Econometric Contributions of Clive W.J. Granger and Robert F. Engle

This paper provides a non-technical and illustrated introduction to the econometric contributions of the 2003 Nobel Prize winners, Robert Engle and Clive Granger, with special emphasis on their implications for heterodox economists.ARCH, GARCH, cointegration, error correction model, general-to-speci...c

Labor Discipline, Reputation and Underemployment Traps

The introduction of "effort inducible" and non-effort" workers into an otherwise standard model of labor discipline produces a paradox of sorts: when firms cannot tell the difference, the predictable reductions in both output and real wages are sometimes accompanied by an increase in profits. The resolution of this paradox is found in the difference in expected productities of workers with and without jobs, the source of a reputation effect that alters the balance of labor market power. When, as a consequence of the acquisition and depreciation of productive skills, the relative proportions of such workers are then endogenized, the model exhibits multiple equilibria for plausible parameter values. One of these equilibria can be understood as a new sort of "underemployment trap" with an atrophied primary sector.labor discipline, reputation effect, positive feedback, underemployment trap

Who is Post-Walrasian Man?

This paper, written for a conference volume on "post-Walrasian macro-economics," reviews what we have learned, and perhaps not learned, about the character of economic man over the last few decades, and discusses some of the macroeconomic implications of this research.

Social Reciprocity

We define social reciprocity as the act of demonstrating one's disapproval, at some personal cost, for the violation of widely-held norms (e.g., don't free ride). Social reciprocity differs from standard notions of reciprocity because social reciprocators intervene whenever a norm is violated and do not condition intervention on potential future payoffs, revenge, or altruism. Instead, we posit that social reciprocity is a triggered normative reponse. Our experiment confirms the existence of social reciprocity and demonstrates that more socially efficient outcomes arise when reciprocity can be expressed socially. Too provide theoretical foundations for social reciprocity, we show that generalized punishment norms survive in one of the two stable equilibria of an evolutionary game with selection drift.reciprocity, norm, experiment, public good, learning, evolution

Crying Over Spilt Milk: Sunk Costs, Fairness Norms and the Hold-Up Problem*

This paper explores a possible connection between two behavioral anomalies in economics, the observed responsiveness of individual decision-makers to sunk costs, and the apparent failure of backward induction to predict outcomes in experimental bargaining games. In particular, we show that under some conditions, a "sunk cost sensitive" fairness norm can evolve in such environments. Under this norm, a fair distribution allows all parties to recoup whatever each has invested in their relationship before the net surplus is then divided into equal shares. The establishment of such a norm would have important consequences for the hold-up problem, which we characterize in terms of ultimatum bargaining in the presence of an outside option. We then conclude with a brief discussion of the possible labor market implications of our results.sunk costs, norms, fairness, trust, hold-up problem, human capital

What Norms Trigger Punishment

Many experiments have demonstrated the power of norm enforcement-peer monitoring and punishment-to maintain, or even increase, contributions in social dilemma settings, but little is known about the underlying norms that monitors use to make punishment decisions. Using a large sample of experimental data, we empirically recover the set of norms used most often by monitors and show ?rst that the decision to punish should be modeled separately from the decision of how much to punish. Second, we show that absolute norms often ?t the data better than the group average norm often assumed in related work. Third, we ?nd that di?erent norms seem to in?uence the decisions about punishing violators inside and outside one’s own group.public good, experiment, punishment, social norm, norm enforcement.

No Switchbacks: Rethinking Aspiration-Based Dynamics in the Ultimatum Game

Aspiration-based evolutionary dynamics have recently been used to model the evolution of fair play in the ultimatum game showing that incredible threats to reject low offers persist in equilibrium. We focus on two extensions of this analysis: we experimentally test whether assumptions about agent motivations (aspiration levels) and the structure of the game (binary strategy space) reflect actual play, and we examine the problematic assumption embedded in the standard replicator dynamic that unhappy agents who switch strategies may return to a rejected strategy without exploring other options. We find that the resulting "no switchback" dynamic predicts the evolution of play better than the standard dynamic and that aspirations are a significant motivator for our participants. In the process, we also construct and analyze a variant of the ultimatum game in which players can adopt conditional (on their induced aspirations) stategies.ultimatum game, learning, aspirations, replicator dynamics, experiment

Charity Auctions: A Field Experimental Investigation

Auctions are a popular way to raise money for charities, but relatively little is known, either theoretically or empirically, about the properties of charity auctions. The small theoretical literature suggests that the all-pay auction should garner more money than winner-pay auctions. We conduct field experiments to test which sealed bid format, first price, second price or all-pay raises the most money. Our experiment suggests that both the all-pay and second price formats are dominated by the first price auction. Our design also allows us to identify differential participation as the source of the difference between existing theory and the field. To conclude, we show that a model of charity auctions augmented by an endogenous participation decision predicts the revenue ordering that we see in the field.