the effects of entry regulation on oligopolistic interaction the uruguayan banking sector this article develops a methodology to test alternative oligopoly models and to analyze the effects of entry restrictions on conduct this methodology is applied to the uruguayan banking sector whose legal entry barriers were significantly relaxed during the late 1970s the results are consistent with a von stackelberg type of industry where the degree of oligopolistic interaction among the leading firms is reduced as a consequence of the relaxation of the legal entry barriers

r d cooperation and the joint exploitation of r d is r d cooperation preferred to non cooperative r d and does the answer depend on how firms choose output and if anti trust protection is provided to r d is it desirable to extend anti trust protection to cooperative production as well in our model cooperative r d is always preferred by both firms and consumers regardless of how output is chosen we then show that though innovation effort and profits are higher when both output and r d effort are chosen cooperatively consumer surplus and overall social welfare are higher when cooperation is restricted to r d

competitive advantage and collusive optima cost differences may often be important in real oligopolies if side payments are impossible the standard cartel objective total industry profits lacks plausibility when costs differ this essay considers plausible alternatives four different technologies for effecting collusion which are essentially identical when costs are equal define sets of possible profits axiomatic bargaining models are used to select unconstrained optima from among these possibilities simple functional forms are employed low cost firms with large shares in cournot equilibrium may have little to gain from collusion if collusion is effective low cost firms will have relatively low estimated conjectural variations

collusive behavior with heterogeneous firms in a repeated duopoly with heterogeneous firms i ask which enforceable collusive arrangement is likely to prevail i propose the equilibrium at which both firms are just indifferent between colluding and defecting for discount factors not exceeding a critical level i show this equilibrium is pareto optimal possibly even the unique pareto optimum i then apply bargaining theory and show that the proposed equilibrium is the likely outcome of explicit negotiations finally i argue that the proposed equilibrium is an obvious focal point on which firms may tacitly coordinate the proposed equilibrium promises to be useful for comparative statics analysis of collusive oligopoly

the ecb s asset purchase programme a model based evaluation abstract this paper uses a dynamic stochastic general equilibrium model with financial frictions to quantify the effects of the european central bank s recent asset purchase programme our results suggest that the macroeconomic effects of purchases are potentially important when the programme is associated with forward guidance on the interest rate the signalling that the future monetary policy stance will remain accommodative is the prominent transmission channel

differences in interest rate policy at the ecb and the fed an investigation with a medium scale dsge model using two estimated models for the euro area and the united states this paper investigates whether the observed dierence in the amplitude of the interest rate cycle since 1999 in both areas is due to dierences in the estimated monetary policy reaction function dierences in the structure of the economy or dierences in the size and nature of the shocks hitting both economies the paper concludes that dierences in the type size and persistence of shocks in both areas can largely explain the dierent interest rate setting

an empirical oligopoly model of a regulated market abstract we model a three firm oligopoly the spanish fertilizer industry from 1976 to 1988 which was subject to price regulation in the form of price ceilings a theoretical and econometric model is developed in order to identify simultaneously the behaviour of the firms and the degree to which regulation constrained the price the collusive market sharing arrangements involving asymmetric firms and the less collusive outcomes of cournot and stackelberg together with their constrained counterparts are considered as particular behavioural hypotheses the estimation of an aggregated and a disaggregated version of the model by general method of moments techniques leads us to identify the regulation constrained stackelberg equilibrium as the most likely outcome given the observed data

the power of forward guidance revisited in recent years central banks have increasingly turned to forward guidance as a central tool of monetary policy especially as interest rates around the world have hit the zero lower bound standard monetary models imply that far future forward guidance is extremely powerful promises about far future interest rates have huge effects on current economic outcomes and these effects grow with the horizon of the forward guidance we show that the power of forward guidance is highly sensitive to the assumption of complete markets if agents face uninsurable income risk and borrowing constraints a precautionary savings effect tempers their responses to changes in future interest rates as a consequence forward guidance has substantially less power to stimulate the economy in addition we show that the business cycle dynamics of our incomplete markets model differ substantially from its complete market counterpart this contrasts with the well known results of krusell and smith 1998 we present approximate representations that can easily be incorporated into standard business cycle models

the macroeconomic effects of large scale asset purchase programmes the effects of asset purchase programs on macroeconomic variables are likely to be moderate we reach this conclusion after simulating the impact of the federal reserve s second large scale asset purchase program lsap ii in a dsge model enriched with a preferred habitat framework and estimated on u s data our simulations suggest that such a program increases gdp growth by less than half a percentage point although the effect on the level of gdp is very persistent the program s marginal contribution to infl ation is very small one key reason for our fi ndings is that we estimate a small degree of fi nancial market segmentation if we enrich the set of observables with a measure of long term debt the semi elasticity of the risk premium to the amount of debt in privatesector hands is substantially smaller than that reported in the recent empirical literature in this case our baseline estimates of the effects of lsap ii on the macroeconomy decrease by at least a factor of two throughout the analysis a commitment to an extended period at the zero lower bound for nominal interest rates increases the effects of asset purchase programs on gdp growth and infl ation

the effects of logrolling on congressional voting the theoretical public choice literature suggests that vote trading is an important determinant of congressional voting behavior yet empirical voting models do not allow for vote trading these models recognize that observed ideology may influence legislative behavior but do not correct for unobserved ideology this study devises new tests for logrolling and ideology the empirical model controls for logroll agreements and unobserved ideological interest via the correlation of unobserved variables the results reflect the presence of vote trading coalitions on some votes but not on others the results cast doubt on the importance of personal ideological interests of legislators copyright 1992 by american economic association

instability of collective decisions testing for cyclical majorities the issues of cyclical majorities and instability of collective choices have been in the fore front in the discussion of social choice mechanisms cycling lack of equilibria and so called chaos theorems have been prevalent in the public choice literature whether cycling actually occurs in processes that are decided by majority rule has been a long standing question however cycling has not been made quantifiable nor has it been clear how one would determine empirically whether majorities are cyclical in this paper cycling has been given an empirical meaning this paper provides a method to test for cyclical majorities and applies it to decisions made in the us congress the test results indicate stability and the presence of persistent winners and losers in congress

estimating dsge models with zero interest rate policy we propose estimating dsge models in which the central bank fixes the policy rate for an extended period of time and apply our approach to estimate expected durations of the federal reserve s zero interest rate policy since 2009 we find a large increase in expected duration in 2011 with the move to calendar based guidance and a decrease in 2013 with the taper tantrum these changes are identified by the influence of expected duration on output inflation and interest rates at longer maturities the structural model measures the severity of the zero lower bound constraint and the effects of unconventional policy

optimal cartel trigger price strategies abstract a dynamical model of industry equilibrium is described in which a cartel deters deviations from collusive output levels by threatening to produce at cournot quantities for a period of fixed duration whenever the market price falls below some trigger price in this model firms can observe only their own production level and a common market price the market demand curve is assumed to have a stochastic component so that an unexpectedly low price may signal either deviations from collusive output levels or a downward demand shock

evaluating the macroeconomic effects of the ecb s unconventional monetary policies we quantify the macroeconomic effects of the european central bank s unconventional monetary policies using a dynamic stochastic general equilibrium model which includes a set of shadow interest rates extracted from the yield curve these shadow rates provide unconstrained measures of the overall stance of monetary policy counterfactual analyses show that without unconventional measures the euro area would have suffered i a substantial loss of output since the great recession and ii a period of deflation from mid 2015 to early 2017 specifically year on year inflation and gdp growth would have been on average about 0 61 and 1 09 below their actual levels over the period 2014q1 17q2 respectively

non cooperative bargaining theory an introduction the paper provides an informal introduction to some of the main themes of the recent literature on non cooperative or sequential bargaining models it focuses in particular on the relationship between the new approach and the traditional axiomatic approach exemplified by nash bargaining theory it illustrates the new insights offered by the non cooperative approach by reference to a detailed analysis of the manner in which the presence of an outside option available to one of the parties will affect the negotiated outcome finally the difficulties which arise in extending this analysis to two person bargaining with incomplete information and to n person bargaining are discussed this is a revised version of the fourth review of economic studies lecture presented in april 1985 at the joint meeting of the association of university teachers of economics and the royal economic society held in oxford the choice of lecturer is made by a panel whose members are currently professors hahn mirrlees and nobay and the paper is refereed in the usual way this paper aims to provide an informal and elementary introduction to an approach to bargaining which has received a great deal of attention over the past few years the approach involves writing down some particular sequence of moves offers and replies to be made over time in the course of negotiations and then looking for a non cooperative equilibrium in the game thus specified in practice a perfect equilibrium or in games of incomplete information a sequential equilibrium while the approach appears at first sight to be very different in spirit from the traditional axiomatic approach in which a bargaining solution is specified by appealing to a number of general requirements which are deemed appropriate on the basis of some a priori considerations the two approaches are in fact complementary while the

on vertical relations and the timing of technology adoption we study the timing of new technology adoption in markets with input outsourcing and thus with vertical relations we find that technology adoption can take place earlier when firms engage in input outsourcing than when they produce the input in house hence the presence of vertical relations can accelerate the adoption of a new technology we also find that particular features of a vertically related market such as the distribution of bargaining power and the contract type through which trading is conducted can crucially affect the speed of technology adoption

investment shocks and business cycles abstract the origins of business cycles are still controversial among macroeconomists this paper contributes to this debate by studying the driving forces of fluctuations in an estimated new neoclassical synthesis model of the u s economy in this model most of the variability of output and hours at business cycle frequencies is due to shocks to the marginal efficiency of investment imperfect competition and to a lesser extent technological frictions are the key to their transmission although labor supply shocks explain a large fraction of the fluctuations in hours at very low frequencies they are irrelevant over the business cycle this finding is important because the microfoundations of these disturbances are widely regarded as unappealing

the political economy of benefits and costs a neoclassical approach to distributive politics this essay offers a rational political explanation for the notorious inefficiency of pork barrel projects with an optimization model of legislative behavior and legislative institutions the model emphasizes the economically arbitrary from a welfare point of view importance of the geographic incidence of benefits and costs owing to the geographic basis for political representation we explore the implications of a legislator s objective function and derive conditions under which a representative legislature will select an omnibus of projects each of which exceeds the efficient scale

market structure and price cost margins in a paper that has become a standard reference in the structure conductperformance approach to industrial economics cowling and waterson 1976 developed a theoretical rationale for expecting industry profitability to be positively correlated with the level of concentration their model based on a simple algebraic description of oligopoly behaviour has been interpreted as providing a justification for the common empirical practice of cross industry regression analysis of price cost margins in terms of concentration levels in the present paper we show that on further examination this model implies a joint determination of margins and concentration this provides some interesting comparative static results of relevance to inter industry differences in concentration levels equally however it leads to various cautionary insights concerning the meaning of price cost margin versus concentration regressions

judo economics reconsidered capacity limitation entry and collusion abstract the capacity investment by a new firm into an established market is explored in a repeated price game if the entrant expects collusion to prevail upon entry it may not practice judo economics but instead choose to install enough capacity to serve the entire market this occurs when collusion involves optimal punishment paths if instead collusion is based upon the static nash equilibrium punishment and the incumbent has excess capacity and the entrant is at a cost disadvantage the entrant will strategically limit its capacity so as to restrain the incumbent s price response to entry

profit sharing in a collusive industry abstract we study a model in which collusive duopolists divide up the monopoly profit according to their relative bargaining power we are particularly interested in how the negotiated profit shares depend on the sizes of the firms if each can produce at the same constant unit cost up to its capacity we show that the profit per unit of capacity of the small firm is higher than that of the large one we also study how the ratio of the negotiated profits depends on the size of demand relative to industry capacity and how this ratio changes with variations in demand

the output and profit effects of horizontal joint ventures the effects of production joint ventures on their parents profits and total industry output are analyzed using a conjectural variations model joint ventures that represent new producing entities are shown to be more likely because the profits of parents in the same industry are more likely to increase under conditions of cooperative as opposed to rivalrous behavior under the same circumstances industry output increases although a modest rise in cooperation among firms suffices to reverse these effects the precise results are shown also to depend upon the degree of coordination of the output decisions of the joint venture and its parents copyright 1992 by blackwell publishing ltd

why so much stability one of duncan black s 1958 more important contributions was a classically simple proof that with complex issues and majority voting a stable outcome is unlikely this very simple proof that there would normally be no motion which can get a majority against all others and hence that any possible outcome is dominated by another has been elaborated and made more precise by later work without most improbable conditions endless cycling would be expected this is particularly true when logrolling is present as it normally is if we look at the real world however we observe not only is there no endless cycling but acts are passed with reasonable dispatch and then remain unchanged for very long periods of time thus theory and reality seem to be not only out of contact but actually in sharp conflict it is the purpose of this article to demonstrate that our existing theory when properly looked at does indeed imply a relatively stable outcome to voting in some cases however this stability will not be a true equilibrium because a random member of a large set will be chosen and then that random outcome will be left unchanged for long periods of time it does not dominate all other outcomes but is retained merely because of its particular history there are already several possible explanations for the observed stability in the literature we will take them up as they become relevant to the general line of reasoning i should however warn the reader that my own previous work including joint work with buchanan will play a major role here this may simply reflect egotism but i think that some of the early work which is now partially forgotten can provide solutions for more modern problems much recent public choice work has involved spatial models and these models frequently ignore logrolling the reason presumably is that it is very hard to put logrolling in a two dimensional diagram we shall begin considering such special models and assume that the issues are the sort that does not lead to logrolling and then turn to more complex logrolling problems with respect to the first situation in which logrolling does not occur there is already one possible explanation for the observed stability in the literature

the macroeconomic effects of quantitative easing in the euro area evidence from an estimated dsge model this paper analyses the macroeconomic effects of the ecb s quantitative easing programme using an open economy dsge model estimated with bayesian techniques using data on government debt stocks and yields across maturities we identify the parameter governing portfolio adjustment in the private sector shock decompositions suggest a positive contribution of ecb qe to ea year on year output growth and inflation of up to 0 4 and 0 5 pp in the standard linearised version of the model allowing for an occasionally binding zero bound constraint by using piecewise linear solution techniques raises the positive impact up to 1 0 and 0 7 pp respectively

fixed fee liscensing of innovations and collusion unlike other types of licensing agreements such as those with output restrictions market division clauses or output royalties licensing contracts with only a fixed fee have been perceived as having no anticompetitive consequences this paper illustrates that fixed fee licensing may facilitate collusion by enhancing the licensee s ability to credibly punish deviations from the collusive outcome on the part of the licenser antitrust implications of the result and potential ways of detecting collusion motivated licenses are discussed copyright 1996 by blackwell publishing ltd

legislative organization and government spending cross country evidence abstract the law of 1 n posits that an increase in the number of elected representatives fuels excessive government spending despite its wide acceptance as a stylized fact the law of 1 n has received only limited empirical scrutiny and the existing evidence for the american states provides mixed support for the thesis this paper examines the law of 1 n in bicameral and unicameral legislative structures using a cross section of democratic countries the results indicate that legislative size matters under both legislature structures but bicameralism dampens the 1 n effect relative to unicameralism

collusion among asymmetric firms the case of different discount factors abstract this study investigates collusive behavior among asymmetric firms for this purpose we develop a selection criterion for deriving a unique collusive outcome and apply it to the case when firms have different discount factors our analysis reveals that for collusion to be self enforcing it is unnecessary that all firms have sufficiently high discount factors but rather only that firms on average have a sufficiently long run view the optimal collusive outcome entails a strict ordering of output quotas in which firms with relatively low discount factors receive a disproportionate share of market demand as found in the case of a common discount factor a fall in a firm s discount factor reduces the likelihood of successful collusion this effect reduces firm profits on the other hand in the event that firms can collude a lowering of a firm s discount factor increases its output quota so that its profits rise

transaction costs and coalition stability under majority rule 1 introduction under a majority voting rule representatives of specific political districts must bargain with representatives of other districts to build a coalition for enacting legislation that benefits their narrow constituencies but the theoretical public choice literature warns of potential for unstable majorities minimum winning coalitions divide program benefits just among their members creating incentives for those left out to entice defection by offering rewards to those who leave and form a different coalition as noted in mueller 1989 new coalitions emerge undermining the old ones leading to cyclical majorities short term programs and highly skewed distributions of program benefits 1 despite these dire predictions there is a general consensus in the literature such as tullock 1981 that programs are more stable and allocations more equal than the theory suggests 2 in an effort to explain the discrepancy between prediction and observation researchers have pointed to institutional rules and practices in congress for example as stated in shepsle and weingast 1981a and weingast and marshall 1988 the committee system provides a structure induced equilibrium that limits the possible range of vote trading and thereby helps maintain coalitions further shepsle and weingast 1981b miller and oppenheimer 1982 and collie 1988 argue that universalist sharing of program benefits enlarges the winning coalition and extends its political support 3 in this article we offer additional evidence of broad stable sharing in many programs enacted by congress by describing interstate distributions from the federal highway trusts fund htf the allocation formula for the htf was initiated in 1916 but despite wide divergence across the states in growth of various economic factors over the rest of the twentieth century such as vehicle registration and population that might have led to redirection of highway funds there were comparatively limited htf allocation adjustments analysis of state receipts from the htf relative to tax payments into the fund reveals that some states collect much more than they contribute whereas others pay in more than they receive even so interstate ratios of htf apportionments to payments have remained stable across the years varying less than changes in highway use measures would suggest going beyond this specific program we examine overall federal expenditure and tax shares among the states from 1975 to 1997 and show that there has been a similar continuity in the interstate distribution of federal funds and taxes 4 as with the highway program there is broad stable sharing of federal expenditures across the states with some receiving more than they contribute in taxes to the federal government to better understand this observed stability and use of relatively egalitarian sharing rules and to go beyond existing explanations we emphasize the desire of politicians to minimize the high transaction costs of negotiating and enforcing political coalitions politicians have incentive to prevent unraveling of political agreements to avoid the costs of searching for new coalition partners reaching agreement on the nature and distribution of program benefits and costs and verifying compliance these activities detract from a legislator s ability to address other voter concerns moreover legislators seek to protect constituent benefits accruing from long term programs that would be lost if coalitions unraveled 5 accordingly we argue that politicians assemble greater than minimum sized coalitions to build broad political support for their legislative programs offering benefits to a larger constituency in exchange for additional votes considerable negotiation over the distribution of program benefits a nd costs may be required so that once agreements are reached politicians will be loath to consider a major reallocation that could undermine the coalition

do markets differ much this essay reports the results of a crosssection study of differences in accounting profitability that sheds light on some basic controversies in industrial economics most previous cross section studies in this field have been concerned with testing hypotheses about structural coefficients in models meant to apply to essentially all markets as we have learned more about the difficulties of constructing such general models and of performing tests on their structural parameters properly structural cross section analysis has fallen out of fashion in contrast to most of the cross section literature the analysis reported here is fundamentally descriptive it does not attempt directly to estimate or to test hypotheses about structural parameters i hope to show by example that one can perform illuminating analysis of cross section data without a host of controversial maintained hypotheses cross section data can yield interesting stylized facts to guide both general theorizing and empirical analysis of specific industries even if they cannot easily support full blown structural estimation one can view the sort of search for stylized facts conducted here as either a replacement for or an input to interindustry structural estimation depending on one s feeling about the long run potential of that research approach this study also departs from much of the cross section literature by being fundamentally concerned with the importance of various effects not just with coefficient signs and t statistics in particular this essay provides estimates of the relative importance of firm market and market share differences in the determination of business unit divisional profitability in u s manufacturing using 1975 data from the line of business program of the u s federal trade commission ftc i find support neither for the existence of firm effects nor for the importance of market share effects moreover while industry effects apparently exist and are important they appear to be negatively correlated with seller concentration in these data section i relates firm market and share effects to current issues and controversies in industrial economics and thus supplies the motivation for our empirical analysis the remainder of the essay treats the data and