Peer effects at campus cafeterias

This study investigates the voluntary allocation of monetary resources to future food consumption by customers of campus cafeterias. A rich dataset allows us to infer social proximity of cafeteria customers and to measure social spillovers in allocation decisions. We show that individuals tend to imitate directly observed behavior and that close social proximity further encourages imitation.     

Peer group effects in applied general equilibrium

Summary. In this paper, I develop an applied general equilibrium environment with peer group effects. The application I consider is schooling. The framework used here is general equilibrium with clubs. I establish the existence of equilibrium for the economy with a finite number of school types. This result is then extended to the case where the set of school types is a continuum. The two welfare theorems are shown to hold for both economies. To compute the equilibrium, I construct a Negishi mapping from the set of weights on individual type's utility to the set of transfers that support the corresponding Pareto allocations as competitive equilibria with transfers. Because this mapping is a correspondence, a version of Scarf's algorithm is used to find a competitive equilibrium. Received: June 9, 1999; revised version: March 13, 2000     

Peer effects and selection effects on smoking among Canadian youth

Abstract.  A number of studies have indicated that peer smoking is a highly influential factor in a young person's decision to smoke. However, this finding is suspect, because the studies often fail to account for selection and simultaneity bias. This paper develops an econometric model of youth smoking that incorporates both peer effects and selection effects. Identification is achieved by using the degree of selection on observables as a proxy for the degree of selection on unobservables. The results indicate that peers have some influence on a young person's decision to smoke, but that influence is much weaker than is suggested by reduced form models. JEL classification: C35, I12     

Peer effects in computer assisted learning: evidence from a randomized experiment

We conduct a large scale experiment to investigate peer effects in computer assisted learning (CAL). Identification relies on three levels of randomization. We find an average 0.17 standard deviation improvement in math scores among primary school students. This average effect is the same for students treated individually or in pairs, implying that peer effects double the learning benefit from a given equipment. Among paired students, poor performers benefit more from CAL when paired with good performers and vice versa. Average performers benefit equally irrespective of who they are paired with. This suggests that the treatment is dominated by knowledge exchange between peers. We also find that CAL treatment reduces the dispersion in math scores and that the beneficial effects of CAL can be strengthened if weak students are systematically paired with strong students.     

Peer group effects on the academic performance of Italian students

We analyse peer effects among students of a middle-sized Italian public university. We explain students’ average grade in exams passed during their Second Level Degree course on the basis of their pre-determined measures of abilities, personal characteristics and peer group abilities. Thanks to a rich administrative data set, we are able to build a variety of definitions of peer groups, describing different kinds of students’ interaction, based on classes attended together or exams taken in the same session. Self-selection problems are handled through Two-Stage Least Squares estimations using as an instrument, the exogenous assignment of students to different teaching classes in the compulsory courses attended during their First Level Degree course. We find statistically significant positive peer group effects, which are robust to the different definitions of peer group and to different measures of abilities.     

Peer effects on risk behaviour: the importance of group identity

This paper investigates whether and to what extent group identity plays a role in peer effects on risk behaviour. We run a laboratory experiment in which different levels of group identity are induced through different matching protocols (random or based on individual painting preferences) and the possibility to interact with group members via an online chat in a group task. Risk behaviour is measured by using the Bomb Risk Elicitation Task and peer influence is introduced by giving subjects feedback regarding group members’ previous decisions. We find that subjects are affected by their peers when taking decisions and that group identity influences the magnitude of peer effects: painting preferences matching significantly reduces the heterogeneity in risk behaviour compared with random matching. On the other hand, introducing a group task has no significant effect on behaviour, possibly because interaction does not always contribute to enhancing group identity. Finally, relative riskiness within the group matters and individuals whose peers are riskier than they are take on average riskier decisions, even when controlling for regression to the mean.     

Price-setting behavior of Austrian firms

This paper explores nominal rigidities by investigating price-setting behavior of Austrian firms based on survey evidence. Distinguishing between two stages of price setting—first the price reviewing phase and second the price changing phase—our results suggest that the main obstacles to price flexibility lie on the second stage. Our main result is that firms postpone price adjustments, because they are afraid to antagonize customers with frequent price changes. Thus, customer relationships - especially those with consumers—are a major source of price stickiness in the Austrian economy.

Austrian economics and climate change

The aim of this paper is to outline and defend an Austrian policy response to climate change. A privatised climate change policy, based on Austrian welfare economics, is the only way to defend to the greatest possible degree the liberties both of fossil fuel users and people whose property rights will be violated if carbon emissions cause climate change. Neoclassical and ‘Post-Austrian’ analyses of climate change are both theoretically unsound and impractical, in requiring for their implementation a foundation in reliable scientific knowledge that is not available. Anthropogenic climate change is a putative interpersonal conflict rather than market failure. The use of fossil fuels should be subject to side-constraints designed to avoid the infringement of other people’s property rights. Tort litigation would protect these rights, where necessary. Litigation would also promote the public understanding and even the advancement of climate science.     

Towards a New Austrian Macroeconomics

Austrian macroeconomists of the interwar period saw the economy as a complex adaptive system, in which macroeconomic variables emerge from the interaction between millions of purposefully acting agents. Recent advances in computation technology allow us to build empirically salient synthetic economies in silico, and thereby formalize many Austrian insights. We present a workhorse model with firms on an input-output network. Macroeconomic variables evolve through the interaction between micro-economic decisions. We use the model to explain an effect of monetary shocks on the price distribution and provide a sketch of other potential applications.     

Austrian Economics and Public Choice

The Review of Austrian Economics -     

The Austrian theory of relational goods

In modern rich societies, the traditional positive correlation between income and happiness seems to have disappeared: even though their income keeps rising, people do not declare themselves to be happier. This problem, which is known in literature as the “paradox of happiness”, has been thoroughly studied. One of the possible explanations is based on the observation that an income increase can sometimes entail the destruction of those relational goods on which happiness largely relies: relationships of family, friendship, love and fellowship. This research aims to show how, in the age of Marginalism, the most important attempt at establishing if and in which sense relational goods are economic goods is carried out by the very Austrian economists who led Robbins to write the epistemological statute of modern economic science.     

Austrian economics at the cutting edge

Austrian economists today have a valuable opportunity to rejoin the mainstream of the economics profession. As Colander, Holt, and Rosser have argued, neoclassical orthodoxy is no long mainstream. What I call the “heterodox mainstream” is an emerging new orthodoxy. The five leading characteristics of the emerging new orthodoxy are bounded rationality, rule following, institutions, cognition, and evolution. When listed in this order, they suggest the acronym BRICE. The Austrian school is also an example of BRICE economics. The shared themes of BRICE economics create an opportunity for intellectual exchange between Austrians and other elements of the heterodox mainstream. Although Austrians should engage the heterodox mainstream energetically, they should also defend the essential elements of an early version of neoclassical economics, elements at risk of becoming half-forgotten themes of an earlier era. These elements are supply and demand, marginalist logic, opportunity-cost reasoning, and the elementary theory of markets. JEL Codes A14, B50, B53 This text is an edited version of a talk given in Washington, D.C. on 19 November 2005 at the SDAE annual dinner. I thank persons present at that time for a helpful discussion. I also thank William Butos, Roger Garrison, Steven Horwitz, and Peter Lewin for useful comments on an earlier draft.     

Wage fiexibility and rigidity in the Austrian manufacturing sector

Zusammenfassung Löhne in verschiedenen Industriesparten scheinen nicht in gleicher Weise auf Änderungen im Arbeitsmarkt und in den Gütermärkten zu reagieren. Die vorliegende Studie liefert eine eingehende Analyse der Entwicklung der relativen Löhne in 18 Branchen der Industrie Österreichs. Aus theoretischen Überlegungen ergeben sich drei Bestimmungsgründe: Verschiebungen der Nachfrage auf den Gütermärkten, die Anspannung auf dem Arbeitsmarkt und die Fremdarbeiterquote in der österreichischen Wirtschaft. Die empirischen Ergebnisse für die Lohngleichungen lassen erkennen, daß unterschiedliche Wachstumsraten in den einzelnen Industrien keinen meßbaren Einfluß auf die Lohndifferentiale ausüben und somit nur geringe Bedeutung für die Allokation von Arbeitskräften zwischen den einzelnen Branchen haben können. Dagegen läßt sich der Einfluß der beiden Arbeitsmarktvariablen sehr gut dokumentieren. Ausgehend vom Vorzeichen und der Größe der Koeffizienten dieser Variablen kann die gesamte Industrie in Branchen mit relativ flexiblen bzw. starren Löhnen eingeteilt werden. Diese Einteilung wiederum bietet den Ansatzpunkt für einige Schluß-folgerungen über den Sinn und die Effektivität einkommenspolitischer Maßnahmen.     

Financial incentives in the Austrian PAYG-pension system: micro-estimation

The scope of this paper is to investigate the impact of financial incentives on the retirement decision of private sector workers in Austria. How do financial incentives embedded in the Austrian pension system impact individual retirement behavior? We are using a unique dataset of individual social insurance spells. Micro-estimating the impact of financial incentives on the probability of retirement shows that the behavioral response to financial incentives in Austria is relatively large in international comparison. Also, there are striking behavioral differences between men and women. Using the estimates to simulate reform scenarios shows huge behavioral changes as incentives alter.     

The behavioral foundations of Austrian economics

Behavioral and experimental economics present challenges to the neoclassical theory of individual behavior, which is based on individuals making choices within the framework of utility functions that are assumed to have certain well-defined characteristics. Results in behavioral and experimental economics have shown that it is common for individual behavior to systematically deviate from the neoclassical axioms of utility maximization. Austrian economics is also based on axiomatic theories of utility maximization, but the assumptions underlying utility-maximizing behavior are much weaker in the Austrian approach. As a result, they have more solid behavioral foundations and are less subject to challenge by the empirical findings of behavioral and experimental economics. Neoclassical policy conclusions are often overly strong because of its behavioral foundations which are challenged by behavioral and experimental economics and are often misleading because of the comparative static nature of neoclassical welfare economics. For purposes of policy analysis, the Austrian approach provides better insights because of its more realistic behavioral foundations.     

An Austrian Theory of the Firm

The modern Theory of the Firm uses the concept of rent and makes implicit assumptions about equilibrium. An Austrian (Market Process) Theory of the Firm should have something to say about each of these. Two strategic perspectives are analyzed, the neoclassical microeconomic perspective (using the Ricardo-Marshall approach to rent) and the Market Process perspective (using the Fetter approach to rent). In a neoclassical world, rents indicate unsolved or unexploited inefficiencies as every hypothetical outcome is viewed against the standard of perfect competition. By contrast, in the Market Process world there is no single ideal standard by which to measure any particular outcome. All action takes place in an open ended universe in which the future is continually being created, in which competition is a discovery process.