market behavior in bid offer and double auctions abstract this study examines the robustness of the previously observed smith 1964 differences in market behavior between double auctions both buyers and sellers may enter price quotes bid auctions only buyers may enter price quotes and offer auctions only sellers may enter price quotes based on the results of twenty one market experiments we find little support for the a priori hypothesis that bid auction prices tend to be greater than double auction prices which tend to be greater than offer auction prices

laboratory tests of equilibrium predictions with disequilibrium data we examine a common practice used within previous studies of laboratory markets testing equilibrium models using some data from markets that have not reached an equilibrium we examine the effect of this practice when it is applied to some laboratory markets where an appreciable number of them eventually satisfied an operational definition of an equilibrium our data suggest that for our markets significantly different equilibrium test results would be obtained when using all data available in market periods analysed in previous studies rather than using only equilibrium data for our markets choices made in disequilibrium are quite different from those in equilibrium this paper is primarily concerned with examining one common practice used in previous studies of laboratory markets this practice is testing equilibrium models using some data from markets that have not reached an equilibrium the data set used typically consists of all available laboratory data from the last period an average of the last few periods an average of all periods or from the nth period for some fixed n i know of no attempt at least formally to assure all data were from markets in equilibrium markets where market choices have stabilized recently some laboratory markets were run where an appreciable number of them eventually satisfied an operational definition of an equilibrium could the use of disequilibrium data significantly affect the results of tests we might make of some equilibrium models for these laboratory markets this practice would be desirable if the disequilibrium data provided a useful estimate of the behaviour that would have been observed if an equilibrium had been obtained on the other hand if some disequilibrium behaviour is qualitatively different from the behaviour that would be observed in an equilibrium this practice could produce misleading results within this paper we examine the effect of this practice when it is used on our laboratory data

the effects of rent asymmetries in posted offer markets abstract we report the results of six posted offer market experiments designed to analyze the effects of asymmetric supply and demand configurations on the price convergence path to competitive equilibrium the posted offer experiments are compared with twelve double auction experiments reported by smith and williams 1982 results differ markedly across trading institutions unlike trading under double auction rules we cannot reject the proposition that contract price convergence paths are unaffected by the distribution of consumer and producer surplus posted offer contract prices tend to converge to the competitive equilibrium from above regardless of the distribution of the exchange surplus

endogenous efficiency gains from mergers this article analyzes endogenous efficiency gains from mergers it considers oligopolistic homogeneous good markets and duopolistic and triopolistic markets under product differentiation pd quantity and price competition in a two stage game firms invest in cost reducing innovation with and without mergers and then compete in output prices it is found that in homogeneous good markets all possible mergers generate efficiency gains and that these are most significant when r d spillovers are very low or very high efficiency gains increase with the number of insiders and generally decrease with the number of outsiders with pd in most cases the merger generates efficiency gains when spillovers and or pd are sufficiently high with pd efficiency gains increase with spillovers but may increase or decrease with the level of pd the implications of the results for the relationship between competition and innovation outputs and for merger policy are discussed

the effects of competition on the r d portfolios of multiproduct firms we investigate the r d portfolio choices of multiproduct firms when a firm increases cost reducing r d investment in a given product its rivals will modify their entire r d portfolios by reducing r d investments in that particular product and increasing r d investments in other competing products our analysis demonstrates that r d portfolios will be more specialized when firms face greater competition which will be the case if products become closer substitutes a monopolist begins to face competition from a rival firm or firms compete on price rather than quantity r d cooperation allows firms to internalize the negative externalities of their r d investments in two ways by reducing such investments across all products and by increasingly focusing their r d portfolios on different products firms may completely shut down a subset of their r d projects under r d cooperation if the products concerned are sufficiently close substitutes

discussion of a laboratory investigation of the moral hazard problem in an agency relationship the first question concerned the assumption of risk neutrality of both the principals and agents in the models specifically given this assumption it was not clear what element s in the modeling or experimental design precluded the principal s from simply selling or renting the firm to the agent s more important the risk neutrality assumption has a direct effect on the predictions of the models the experimental results and their interpretation finally it was suggested that new experimental techniques such as those developed by berg et al forthcoming might be used to induce specific risk preferences given a particular model to be tested and its attendant experimental design although these techniques have not been fully tested using them may reduce the need to make assumptions about subjects risk preferences and thereby overcome the kinds of questions raised on this issue a second issue dealt with why the experimental study of the moral hazard problem in the principal agent relationship was carried out in a market setting with several principals and agents rather than following

dynamic control of a monopolist s product and process innovation with reference quality our main purpose is to investigate the dynamic control problem of a monopolist s product and process innovation under reference quality the main features of this article are i a monopolist deal

on the instability of the r d portfolio in a dynamic monopoly or one cannot get two eggs in one basket abstract firms innovation portfolios include several dimensions ranging from organizational aspects to cost reduction and product characteristics all of these efforts take place during the product life cycle and interact with each other in determining the spectrum of features of the product and its performance on the market this paper contributes to the related theoretical debate focussing on the possibility of having superior product quality levels at lower marginal production cost over time to deal with this issue we investigate the optimal r d portfolio of a single product monopolist investing in cost reducing activities accompanied by efforts improving the quality of its product over an infinite time horizon it turns out that the firm s relative incentives along the two directions are conditional upon market affluence measured by consumers willingness to pay for quality and r d efforts are complements in the neighbourhood of the steady state equilibrium however the dynamics of the two r d controls depend on both quality and marginal cost at every instant consequently as the stability analysis reveals the steady state equilibrium is indeed unstable due to the dynamics of marginal cost thereby implying that one should not expect the firm to supply an increasing quality level at a decreasing production cost hence the dynamic interplay between r d controls and the resulting instability affecting production costs also imply that one may not expect to observe product quality to increase and market price to decrease over the product life cycle

convergence to nonstationary competitive equilibria an experimental analysis abstract this paper reports the results of 26 posted offer and double auction markets examining the effect of systematic supply and or demand nonstationarities on market performance and dynamic adjustment paths to the competitive equilibria both the trading institution and the source of the nonstationarity are found to affect the ability of markets to track the competitive equilibrium although some posted offer markets track the competitive equilibrium price as well as comparable double auctions posted offer markets consistently exhibit lower efficiency the inability of the posted offer trading institution to track demand based market shocks is particularly striking

firm size and the nature of innovation within industries the case of process and product r d the effect of firm size on the allocation of r d effort between process and product innovation is examined it is hypothesized that relative to product innovations process innovations are less saleable in disembodied form and spawn less growth this implies that the returns to process r d will depend more on the firm s output at the time it conducts its r d than the returns to product r d incorporating this distinction in a simple model the authors derive and test predictions about how the fraction of r d devoted to process innovation varies with firm size within industries

advertising sunk costs and barriers to entry this paper tests hypotheses about the entry deterring effects of advertising the model isolates three separate effects of advertising on entry the effect on the irrecoverable costs of entry the effect on the uncertainty underlying the entry environment and the effect on the measured rates of profit we find that advertising impedes entry since necessary advertising expenditures give rise to a sunk cost which raises the risk of entry however we also find a countervailing force due to advertising in that the entrant perceives a greater likelihood of success in markets where advertising is important our analysis shows that the overall impact of advertising on entry is positive

product and process innovation the implication of making comparisons between uniform pricing monopolist and second degree price discriminating monopolist the question of simultaneous product and process innovation price discrimination is crucial for technologically evolving industries in this paper we assume that there are two different kinds of

in search of predatory pricing can predatory pricing be reproduced in a laboratory environment we report research motivated by this objective we began with conditions that based on the literature appeared to combine the features this literature has suggested are favorable to the emergence of predation next we operationalized what was meant by predatory pricing in our design in order to compare prices with predictions from alternative theories of 10 experiments none evidenced predatory behavior most supported the dominant firm theory the second series of experiments addresses remedies for predation and finds that the effect is to increase prices and reduce efficiency

the exercise of market power in laboratory experiments douglas d davis and charles a holt march 1998 introduction many aspects of antitrust policy are influenced by the possibility that sellers in concentrated markets may have the power to raise prices above competitive levels of course anyone can raise price so the issue is whether a change in structure e g a merger will allow one or more sellers to raise price profitably a price increase by one seller diverts sales to others so a firm is more likely to have market power when its competitors have limited capacity to expand their sales thus a merger that reduces competitors capacity may create market power in laboratory experiments any treatment that reassigns units of capacity from one seller to another may create or destroy market power even if the aggregate supply curve is unchanged for example giving one seller a relatively large endowment of infra marginal low cost units may make it less risky for this seller to raise price and forego the sale of high cost units thus it is not surprising that experiments with apparently similar supply and demand structures may yield different price outcomes as discussed below there are a number of other ways in which structural changes can affect the degree of power that sellers enjoy market power can also be sensitive to the trading institution and this is the context that power issues first arose in experimental economics for example the public posting of uniform prices in a posted offer auction eliminates the incentive to offer discounts on marginal units that arises in a double auction in fact smith 1981 found that even monopolists are sometimes unable to maintain prices above competitive levels in double auctions whereas supra competitive prices are the norm in postedoffer monopolies similarly holt langan and villamil 1986 found that sellers in concentrated double auctions were sometimes able to raise prices but that prices fell to competitive levels in about half of the sessions despite the high concentration of seller capacity davis and williams 1991 replicated the holt langan and villamil results for double auctions and then used the same market

normal costs and demand effects in price setting a study of retailing the study aims at contributing to the debate whether there are demand effects in models that seek to explain prices as mark ups on costs for costs it considers actual costs normal costs and an intermediate model with a partial adjustment to the deviation of actual from normal costs for demand effects it considers an effect on the price level of a change of demand with an allowance for asymmetry between demand growth and demand decline tests and estimates are conducted on the basis of data from retailing

when curiosity kills the profits an experimental examination economic theory predicts that in a first price auction with equal and observable valuations bidders earn zero profits theory also predicts that if valuations are not common knowledge then since it is weakly dominated to bid your valuation bidders will bid less and earn positive profits hence rational players in an auction game should prefer less public information we are perhaps more used to seeing these results in the equivalent bertrand setting in our experimental auction we find that individuals without information on each other s valuations earn more profits than those with common knowledge then given a choice between the two sets of rules half the individuals still preferred to have the public information we discuss possible explanations including ambiguity aversion

experimental evidence of a sunk cost paradox a study of pricing behavior in bertrand edgeworth duopoly a well known implication of microeconomic theory is that sunk costs should have no effect on decision making we test this hypothesis with a human subjects experiment students recruited from graduate business courses with an average of over six years of work experience played the role of firms in a repeated price setting duopoly game in which both firms had identical capacity constraints and costs including a sunk cost that varied across experimental sessions over six different values we find contrary to the prediction of microeconomic theory that subjects pricing decisions show sizable differences across treatments the effect of the sunk cost is non monotonic as it increases from low to medium levels average prices decrease but as it increases from medium to high levels average prices increase these effects are not apparent initially but develop quickly and persist throughout the game cachon and camerer s 1996 loss avoidance is consistent with both effects while cost based pricing predicts only the latter effect and is inconsistent with the former

intensity of competition and the choice between product and process innovation abstract two questions are examined within a model of vertical differentiation the first is whether cost reducing innovations are more likely to be observed in regimes of more intense bertrand or less intense cournot competition we find that there are cost reducing innovations that are pursued under cournot but not under bertrand competition the second is whether the regime of competition affects a firm s choice between product and process innovation we show that for the high quality firm whenever there is a difference between the choice made by a bertrand competitor and the choice made by a cournot competitor the former opts for product innovation while the latter prefers process innovation for the low quality firm the result is reversed

the effects of discounting opportunities in laboratory posted offer markets abstract this experiment isolates the effects of allowing sellers to offer private discounts from posted prices although discounting was pervasive when permitted it did not always improve performance high prices and low efficiencies were observed in half of the discount markets

the effects of market organization on conspiracies in restraint of trade abstract mindful of the market structure conduct performance paradigm fundamental to industrial organization research this paper uses laboratory experimental techniques to study the impact of conspiratorial opportunities on market performance we compare posted offer markets where sellers but not buyers are all conspiratorial opportunities with observations from three control groups 1 posted offer markets without conspiratorial opportunities 2 double auction markets with conspiratorial opportunities and 3 posted offer markets with true single seller monopolists the basic conclusions generated by our experimental design are 1 seller conspiracies in posted offer markets tend to raise prices but not profits relative to similarly organized markets without conspiracies 2 posted offer conspiracies tend to generate higher prices but not profits than double auction conspiracies and 3 posted offer monopolies tend to generate higher profits but not prices then posted offer conspiracies

demand uncertainty and sales a study of fashion and markdown pricing the theory of clearance sales is expanded and applied to explain why markups markdowns and the frequency of sales of merchandise sold by department stores have increased dramatically in recent years and why they differ across merchandise groups tha major theme of the paper is that the growing role of fashion and product variety is an important reason for these increases and for the differences between merchandise groups the growing importance of fashion is illustrated by documenting the declining use of whites and the increasing use of colors and prints estimates of the effects of imports and technological and demographic changes on markups and markdowns are presented copyright 1988 by american economic association

process and product innovation by a multiproduct monopolist a dynamic approach abstract we adopt a dynamic approach to model the behaviour of a multiproduct monopolist investing in process innovation and either product differentiation or product proliferation or both irrespective of the number of activities appearing in the r d portfolio we prove that depending on initial conditions there may exists substitutability between process innovation and either form of product innovation along the optimal path towards the steady state while in the latter only complementarity emerges looking at the threefold investment plan we qualitatively characterise the ranking of r d activities in terms of the consumer reservation price and the extent of the spectrum of varieties

firm specific output limits in a posted offer market distributive and efficiency effects abstract in this paper we look at the effect of the removal of firm specific binding and non binding quotas in experimental posted offer markets in the experiments we see that the effect of both binding and non binding quotas is carried over to the deregulated regime the effect of non binding quotas while being in effect on the number of contracts is statistically significant we also see that distribution of surplus may actually affect the convergence path of prices that is with binding quotas price convergence is observed from below the competitive equilibrium

the outputs of retail activities concepts measurement and evidence from u s census data the authors develop a new economic framework for the empirical analysis of retail margins this framework formalizes the role of distribution services as outputs of retail activities their main results are the following the measures of outputs of retail activities identified in the data perform as important and robust determinants of retail margins variables that purport to capture oligopolistic features of market structure play a limited or no role in determining retail margins quantity setting and price setting under the assumptions of profit maximization and monopolistic competition are categorically rejected by the data the data base is information on 49 retail sectors from the 1982 u s census of retail trades copyright 1993 by mit press

advance production in posted offer markets abstract data from market sessions in which production is to demand are compared with data from sessions requiring that output decisions be made and production costs incurred prior to the start of trading in each period no inventory carry over is permitted differences in aggregate output measures such as average contact price sales and market efficiency tend to disappear as traders gain experience in an unchanging environment however the addtional risk introduced by the sunk cost aspect of advance production appears to offset any advantage regarding sellers share of the surplus conferred by the power to post prices

market power and the institutional asymmetry of the posted offer trading institution abstract this paper reports a series of market experiments examining the conjecture that the institutional asymmetry inherent in posted offer pricing can suppress the exercise of market power by the non posting side of the market the data clearly support this conjecture if market power is defined as a unilateral incentive to manipulate the market price via strategic quantity withholding

selling costs and switching costs explaining retail gasoline margins recent theoretical work has shown that price discrimination can take place in imperfectly competitive as well as monopoly markets the persistence of higher retail margins on unleaded than on leaded gasoline during the 1980s suggests that discrimination may occur even in very competitive markets this article studies a number of cost based explanations for such gasoline pricing as well as the possibility of price discrimination the analysis indicates that gas stations discriminate against groups of customers who are less likely to switch to another station the conclusions highlight the influence of shopping or search costs on pricing decisions even in markets thought to be quite competitive

experience and inventory management in double auction markets abstract prior research indicates that double auction markets with inexperienced traders and production to demand consistently perform very close to the competitive ideal with high efficiency and average prices in the competitive equilibrium range when the environment becomes more complex with the introduction of advance production and costless inventory carryover the efficiency of the double auction market with inexperienced traders is reduced and production and sales are lower in comparison with the production to demand double auction market the central finding of this paper is that even when traders are experienced the efficiency losses associated with this more complex double auction environment remain

a unified framework for analysing price interdependence innovative activity and exchange rate pass through this paper develops an international oligopoly model in which domestic and foreign firms simultaneously choose their price and innovation strategies under the assumption of non zero conjectural variations in relation to their competitors price changes the model captures the links between the exchange rate foreign and domestic firms prices and investment in process innovation and provides a unified framework for analysing exchange rate pass through

the hayek hypothesis in experimental auctions institutional effects and market power the hayek hypothesis in experimental auctions institutional effects and market power we report twelve market experiments utilizing a seller market power supply and demand structure where two of five sellers can unilaterally increase their profit by withholding supply the data indicate that both the double auction and posted offer institutions result in traders extracting the bulk of the potential gains from exchange in the market however prices generally occur above the competitive equilibrium prediction market power in the form of strategic supply withholding does not appear to be responsible for the supra competitive prices i introduction one important result arising from experimental market research is that the information flows and contracting rules which define the institutional structure of a market can exert a pronounced influence on market performance such institutional features may be more important than some traditional structural characteristics in determining whether market outcomes will correspond to the predictions of the competitive model in particular a large and growing body of experimental data suggests that markets can generate efficient outcomes even when there are a relatively small number of buyers and sellers with incomplete information on the underlying structure of the market based on evidence from a wide variety of experimental double auction markets vernon smith 1982 167 has expressed this more formally as the hayek hypothesis markets economize on information in the sense that strict privacy together with the public messages of the market are sufficient to produce efficient ce competitive equilibrium outcomes in this statement however the notion of an efficient ce outcome could be interpreted as 1 a simple efficiency claim that all exchange surplus will be extracted or 2 a price claim that all exchange surplus will be extracted via trades at the competitive equilibrium price a recent study by holt langan and villamil 1986 hereafter hlv examines the validity of the hayek hypothesis using the double auction institution and a market structure designed to provide a rather difficult test for the competitive model hlv s market power design provides a subset of sellers with an incentive to unilaterally generate a price increase via the strategic withholding of supply the resulting price deviation from the competitive equilibrium is substantial but results in a relatively small loss of market efficiency thus the price interpretation of the hayek hypothesis is violated in this design if holders of market power recognize their position and successfully affect prices to their advantage the efficiency interpretation however will still hold approximately even with the successful exercise of market power in fact the price interpretation of the hayek hypothesis tends to break down in hlv s markets but the efficiency interpretation tends to hold hlv report deviations from the competitive equilibrium price consistent with the exercise of market power in three of five seller market power experiments they also conjecture that deviations from the competitive equilibrium may increase as participants become more experienced with the trading institution this paper reports the results of twelve experiments that build on hlv s research our experiments compare market performance in hlv s seller market power smp design using both the double auction and posted offer trading institutions our purpose in conducting these experiments is twofold first we are interested in examining the effects of changes in trading institutions on deviations from the competitive equilibrium price in the smp design second to the extent that competitive equilibrium price deviations are observed we are interested in assessing whether the exercise of market power in the form of strategic withholding is the source of these deviations

advance production and cournot outcomes an experimental investigation abstract an experiment designed to assess the effects of advance production decisions on posted offer market performance is reported six of the twelve triopolies were conducted under standard posted offer rules in the remaining markets sellers made binding production commitments prior to posting prices an alteration that shifts the unique stage game nash equilibrium from the competitive to the cournot outcome as predicted advance production decisions raised prices and lowered output nevertheless stable cournot outcomes were never observed

innovation threats and strategic responses in oligopoly markets this paper deals with the strategic reaction of firms to competitive threats stemming from newly developed products of actual competitors product innovation projects go through multiple time consuming stages with several continuation termination decisions hence competitors can react to the threat before the new product is introduced and thereby may prevent or facilitate the product s introduction we consider a duopoly model where firm 1 can start a two stage product innovation project for obtaining a horizontally and vertically differentiated product in between the two stages firm 2 can react by making an investment that improves the competitive position of the current product we find that under weak vertical differentiation firm 2 wants firm 1 to innovate horizontal differentiation softens competition and firm 2 over invests to induce firm 1 to launch the new product second under strong vertical differentiation firm 1 starts the product innovation project triggering under investment by firm 2 but never finishes it the under investment makes firm 2 a weaker competitor which induces firm 1 not to innovate third under very strong vertical differentiation firm 2 prevents a launch of the new product by over investing this results in a strong competitive position of firm 2 it therefore captures such a big market share that firm 1 will not introduce the new product the situation of firm 1 in the old market has worsened the option to complete the innovation created by initiating the first stage of the innovation project has a negative value for firm 1

price formation in double auction markets abstract this paper reports 14 laboratory experiments that examine existing theories of the price formation process in the continuous double auction the experiments feature random values and costs and therefore a new price formation observation each period we find that efficiency is high and rises with experience in this environment we also find that trades with greater exchange surplus tend to occur earlier in the period that increased trader experience reduces an anomalous intertemporal arbitrage opportunity observed previously and that only when traders are very experienced does exchange surplus accrue disproportionately to the side of the market with a smaller number of traders

a comparison of posted offer and double auction pricing institutions this paper presents an experimental study of a computerized posted offer pricing mechanism that captures many of the basic institutional features of retail exchange in the u s posted offer market performance is evaluated relative to double auction market performance using two supply and demand designs subject experience with the trading mechanism is explicitly considered as an experimental treatment variable the market data suggest that prices tend to be higher and efficiency lower under posted offer pricing relative to double auction however the institutional effect appears to interact with other design conditions when feasible the predictive power of competitive nash and limit price theoretic equilibria are empirically evaluated

asymmetric surplus distribution and the price convergence path in posted offer markets a note abstract we report results from five posted offer experiments with firm specific quotas the average contract price converges from below the competitive equilibrium thus the independence of the contract price convergence path from surplus distribution is questioned in our results

the incentives for cost reduction in a differentiated industry abstract this paper investigates how the incentives for cost reduction in a differentiated industry depend upon the degree of product substitutability when goods are imperfect substitutes both cournot and bertrand competition result in underinvestment in the sense that a social planner would be willing to pay more for a given cost reduction than a profit maximizing firm overinvestment may occur when the goods are sufficiently close substitutes similarly cournot competition provides a stronger incentive to innovate than bertrand competition if the degree of substitutability is low and a weaker incentive if this degree is high

consumer and competitor reactions evidence from a field experiment abstract in response to a price change by a single seller it is common for the density of sellers in the market to influence both the quantity response of consumers and the price response of other sellers using field experiment data collected around a series of exogenously imposed price changes we find that an individual retailer with a larger number of competitors faces a more responsive demand this finding is fundamental to a predicted inverse relationship between market prices and the number of competitors we also examine the reaction of rival stations to exogenous price changes and find that the magnitude of a competitor s response is inversely related to the density of stations in the market

advance production in experimental markets the effects of advance production in posted offer and double auction markets are investigated previously observed differences between these institutions in mean contract prices and in the distribution of producers and consumers surpluses under the production to demand condition disappear when sellers make output decisions and incur production costs prior to the start of trading the double auction institution remains more efficient under advance production the results suggest that the differential effects of alternative trading institutions on market outcomes may be partially offset by the production conditions characterizing a market

can supply and demand parameters be recovered from data generated by market institutions the relative accuracy of estimators in recovering supply and demand parameters can depend on the market institutions that generate the data the parameters of known supply and demand functions are estimated with data from laboratory market experiments with human buyers and sellers single equation estimators dominate simultaneous equations estimators in recovering supply and demand parameters from posted offer market data the inaccuracy of simultaneous equations estimators with posted offer data can be explained by the implications for error distributions of the inherent properties of this market institution simultaneous equations estimators perform better with closing price data from double auction markets

price formation in double auctions abstract we develop a model of information processing and strategy choice for participants in a double auction sellers in this model form beliefs that an offer will be accepted by some buyer similarly buyers form beliefs that a bid will be accepted these beliefs are formed on the basis of observed market data including frequencies of asks bids accepted asks and accepted bids then traders choose an action that maximizes their own expected surplus the trading activity resulting from these beliefs and strategies is sufficient to achieve transaction prices at competitive equilibrium and complete market efficiency after several periods of trading journal of economic literatureclassification numbers d41 d44 d8

competitive equilibrium convergence in a posted offer market with extreme earnings inequities abstract we present the results of five laboratory posted offer experiments in which the competitive equilibrium model predicts that all exchange profits are received by one side of the market thus defining a boundary condition price converges to the prediction more slowly when buyers rather than sellers receive the exchange surplus apparently due to the increased market power of sellers in this trading mechanism a model of the seller s decision in this market is developed to explain this result we also observe costly signalling and tacit collusion in our experiments

on the dynamic efficiency of bertrand and cournot equilibria abstract this paper compares bertrand and cournot equilibria in a differentiated duopoly with r d research and development competition it shows that cournot competition induces more r d effort than bertrand competition however the price is lower and output is larger in bertrand than in cournot competition furthermore the bertrand equilibrium is more efficient than the cournot equilibrium if either r d productivity is low or spillovers are weak or products are very different if r d productivity is high spillovers are strong and goods are close substitutes then the bertrand equilibrium islessefficient than the cournot equilibrium journal of economic literatureclassification number l13

bargaining versus posted price competition in customer markets abstract we compare posted price and bilateral bargaining or haggle market institutions in 12 pairs of laboratory market sessions each session runs for 50 75 periods in a customer market environment where buyers incur a cost to switch sellers costs evolve following a random walk process coasian and new institutionalist traditions provide competing conjectures on relative market performance we find that efficiency is lower sellers price higher and prices are stickier under haggle than under posted offer

a dynamic analysis of investment in process and product innovation with learning by doing this paper investigates the optimal control problem of a monopolist s investments in process and product innovation under learning by doing in a dynamic setting we show that i there exists the saddle stable steady state under monopolist optimum and social optimum ii the learning rates of product and process innovation affect not only the monopolist s process or product innovation investments but also the complementarity substitutability relationship between product and process innovation iii the social incentive towards both product and process innovation is always larger than the private incentive characterizing the profit seeking monopolist these results are valuable complement and development to the results drawn from the standard product and process innovation model

an exploration of the effects of the interaction between ict and labor force on economic growth in transition economies abstract complementary investments serve as one of the prerequisites for the successful translation of investments in information and communication technologies ict into macroeconomic outcomes in this study we investigate the presence of complementarity between investments in telecoms and full time telecom staff in the context of transition economies te using translog formulation of cobb douglas production function we determined the presence of statistically significant interaction effect between the two variables the direction of the effect however varies between the two subgroups of tes in our sample thus suggesting the presence of the level dependent threshold

nash equilibrium and buyer rationing rules experimental evidence i introduction this paper presents the results of laboratory experiments comparing the effect of two buyer rationing rules on capacity constrained duopoly markets bertrand edgeworth games this setting offers an excellent opportunity to compare the stage game nash prediction with other equilibria of a repeated game under otherwise identical conditions the rationing rule generates either a unique pure strategy equilibrium or a unique mixed strategy equilibrium of the stage game further collusive outcomes of the repeated game are supported by a wider range of discount factors for one rationing rule than the other this study presents evidence that the single stage nash equilibrium has predictive power for both rationing rules even in repeated settings this result appears to be robust whether the nash equilibrium is in pure strategies or exists only in mixed strategies in modeling capacity constrained price games the choice of rationing rule is possibly the most arbitrary decision a theorist makes in the literature of single shot bertrand edgeworth games we can find examples of nearly identical models which yield substantively different results due to differences in the rationing rule assumed examples are beckmann s 1965 model and levitan and shubik 1972 allen and hellwig 1986 and vives 1986 and kreps and scheinkman 1983 and davidson and deneckere 1986 laboratory experiments provide an interesting opportunity to examine the empirical consequences of alternative buyer rationing rules knowledge of the type of buyer rationing scheme involved with field data is usually unavailable to a researcher in laboratory experiments the researcher can control the type of buyer rationing rule to be used and compare the effects of alternative rules this study provides a first step toward an empirical understanding of the effects of rationing rules one of the rationing rules that i study the value queue 1 is mathematically more tractable than an alternative the random queue 2 hence the authors are able to generalize the value queue models in other dimensions however the value queue assumption reservation values that comprise demand are ordered from highest to lowest should be viewed as a serious restriction on the applicability of these models section ii relates laboratory and field experiments to single shot bertrand edgeworth nash equilibria section iii describes the development and recent contributions to bertrand edgeworth oligopoly theory and demonstrates the effect of rationing rule assumptions on theoretical predictions i describe the experimental design in section iv and identify the competitive monopoly joint profit maximum and single shot nash predictions additionally qualitative differences predicted by single shot and repeated game nash equilibria are discussed experimental results follow in section v with concluding remarks in section vi ii laboratory and field experiments and the nash equilibrium existing laboratory evidence for capacity constrained price games has been compared to the single shot nash equilibrium only ketchum smith and williams 1984 and kruse rassenti reynolds and smith 1993 provide initial results as to the predictive strength of the single stage nash equilibrium in a laboratory environment ketchum smith and williams compare the prices resulting from four seller plato computer assisted posted offer markets the comparison is between one treatment group in which the competitive equilibrium is also the single stage nash equilibrium and another treatment group in which the competitive equilibrium is not a nash equilibrium they find significantly different market outcomes between the two groups kruse rassenti reynolds and smith 1987 test a four seller constant marginal cost bertrand edgeworth model using a komogorov smirnoff test they reject the hypothesis that the actual price distribution matches the mixed strategy price distribution predicted by the theory

the effects of rent asymmetries in markets characterized by advance production abstract the results of 40 controlled market sessions are reported the effects of advance production and the distribution of the market surplus between buyers and sellers on the relative performance of posted offer and double auction markets are compared with the relative performance of posted offer and double auction institutions in markets with production to order performance differences between the two institutions across production conditions as the surplus distributions are varied are similar but not identical the distribution of surplus appears to have an effect on the performance measures in advance production markets

advertising and product quality in posted offer experiments advertising and product quality in posted offer experiments i introduction for years the federal trade commission ftc has attacked unfair and deceptive advertising recently it has turned its attention to errors of omission rather than commission by challenging agreements among sellers to limit advertising even when it is truthful one reason for eliminating advertising restrictions is to stimulate competition in the advertised dimension of the good or service for example price advertising may result in more price competition on the other hand professional associations argue that price competition causes product quality to deteriorate because sellers of high quality services are forced to match the lower prices of sellers of low quality products and through their codes professional associations have implicitly or explicitly discouraged some forms of advertising including price advertising restrictions of this nature still exist in some local markets although they have become the subject of ftc litigation 1 the quality deterioration argument of professional associations is plausible only when buyers are unable to observe quality prior to purchase 2 when buyers cannot distinguish quality moral hazard invites sellers to lower cost by providing lower quality adverse selection can result from price advertising causing lower cost products to drive out higher cost products as argued by akerlof 1970 the opposite point of view is that even when quality cannot be determined prior to purchase price advertising may enable sellers to signal quality and develop reputations 3 moreover transactions repeatedly involving the same buyers and sellers may enable buyers to form expectations about seller quality based on their experience that can make it worthwhile for a seller to provide higher quality the series of laboratory experiments described here permits the evaluation of market performance when buyers have very limited information the claim to be investigated is that price advertising prevents quality deterioration and improves market efficiency reputation formation through advertising is emphasized instead of other mechanisms such as warranties that may prevent quality deterioration 4 so that quality can be kept relatively neutral and easily understood by subjects we represent it as the grade of a commodity the structure underlying the experiments is based on holt s model of the determination of industry quality which is summarized in schmalensee 1979 demand is induced through the values for which buyers can redeem their purchases value is linearly related to grade so that no difference between average and marginal valuation of quality can arise to cause nonoptimal quality as it did in spence 1976 the production cost for each seller is quadratic in the grade selected by the seller therefore the efficient grade level is unique the most closely related experimental work on product quality decisions is reported in lynch miller plott and porter 1986 in their experiments sellers chose one of two quality levels prices were determined in an oral double auction efficient price and quality outcomes resulted when prospective buyers were given full information about quality removing the identities of sellers and allowing only post purchase quality information sometimes resulted in a lemons outcome in which sellers offer a low quality product even though the market would be more efficient with the production and sale of a high quality product private information tended to yield less efficient outcomes than full public information the posted offer experiments reported in this paper differ from the oral double auction experiments in lynch miller plott and porter because one of our objectives was to examine the effect of advertising restrictions on market efficiency in our experiments price advertising is implemented in a standard posted offer auction

oligopoly competition in fixed cost environments abstract many industries with avoidable fixed costs face competitive price instability problems in an attempt to maintain profitability we designed an experimental environment where profitability is eroded by the addition of sunk and avoidable fixed costs while we cannot reject the hypothesis that sunk fixed costs have no effect on prices we observe a pattern of price signaling and responses which maintain above normal profits this success implies that a firm does not have to exit such an industry in order to avoid loses and may help to explain why some competitive industries appear to maintain an inefficient number of firms

market power and mergers in laboratory markets with posted prices in this article we use laboratory methods to evaluate determinants of supracompetitive pricing the experiment involves three treatments each with the same market supply demand and competitive price in the baseline treatment capacity is divided among five sellers so that the competitive price is a nash equilibrium market power is created in a second treatment by reallocating capacity among the sellers this market power raises observed prices in all sessions in a third treatment the three smallest sellers are merged in a way that holds market power constant the consolidation has little residual effect on prices

price discrimination in grocery trade evidence from italy this paper investigates the determinants of price dispersion between staple and non staple goods in grocery retailing as the result of pricing decisions by multiproduct firms theoretical predictions about the nature of supermarkets pricing behaviour are compared and tested empirically using disaggregated data from the italian grocery trade over the period 1990 1992 the empirical results provide evidence for the existence in all types of retail organization of the form of price discrimination suggested by bliss particularly for specialist shops the results are consistent with discrimination due to the exploitation of consumers switching costs

predatory pricing in a multiple market experiment a note abstract isaac and smith 1985a b present a strong behavioral case that predatory pricing is not an observable laboratory phenomenon we propose several modifications of their design resulting in a multiple market experiment in which predatory pricing is present the primary modification involves conducting several markets concurrently providing an active escape opportunity for any prey and a potential reward to a reputation for predation these results provide a behavioral existence proof for the predatory pricing phenomenon they do not address the issue of the phenomenon s behavioral robustness

product differentiation process r d and the nature of market competition abstract we investigate the relationship between process and product rd ii bertrand firms have a stronger incentive for product rd and iii cooperation in product r d promotes both types of r d relative to competition whereas cooperation in both types of r d discourages r d relative to cooperation in just product r d

downstream research joint venture with upstream market power in a vertically related industry we examine the downstream firms incentives to invest in cost reducing research and development r d and to form a research joint venture rjv under two alternative structures of input supply exclusive vertical relations and a single supplier in contrast to the hold up argument in which downstream firms invest non cooperatively and spillovers are low r d investments are higher under a single supplier than under competing vertical chains downstream firms incentives to form a rjv are also stronger in the former case than they are in the latter we identify conditions under which an rjv is beneficial for society integrated innovation and competition policies are also discussed

competing trade mechanisms and monotone mechanism choice abstract we investigate the choice between posted prices and auctions of competing sellers with private valuations assuming that buyers face higher hassle costs in auctions we show the existence of monotone pure strategy equilibria where sellers offer posted prices rather than auctions if and only if they have a sufficiently high reservation value posted prices sell with lower probability but yield a larger revenue in case of trade using an empirical strategy to compare revenues of posted prices and auctions that takes selling probabilities explicitly into account we find our theoretical predictions supported by data from ebay auctions on ticket sales for the euro 2008 european football championship

contestability in the presence of an alternate market an experimental examination most earlier experimental tests ofthe contestable market hypothesis assume a zero opportunity cost of entry this design feature makes interpretation of results in terms of entry behavior problematic the experimental study that i report tests contestability with the addition of an alternate market that yields a positive profit with certainty this safe haven operationalizes a positive opportunity cost of entry hit and run entry is observed in the experiments adjusted mean prices are not significantly different from the zero opportunity cost case two methodological questions are also examined in one treatment sellers price offers are allowed only in 0 25 increments the simplification of the sellers decision space makes collusive arrangements more probable secondly market outcomes using human subject buyers are compared with outcomes from experiments with computer simulated demand the disciplining effect of human subject buyers results in market prices that converge to competitive levels more quickly the theory of contestable markets as presented by william baumol in his 1981 address as outgoing president of the american economic association has received considerable attention since its introduction the thesis of contestability is that we can model a market that attains a competitive outcome without the large numbers price taking assumption in the perfectly contestable market envisioned by baumol and others we would observe the efficient competitive price in equilibrium even with few or only one active seller the threat of entry is the disciplining force that sustains the efficient price as an equilibrium previous experimental tests of the contestable market hypothesis for the natural monopoly case all include at least two active firms pricing in every period the laboratory outcomes of these markets are indistinguishable from the destructive competition that has historically concerned scholars sharkey 1982 one can assert that the competitive prices that result from these natural monopoly markets are due to cutthroat competition because that market is the only game in town the study of the contestable natural monopoly that i report allows subjects the option of earning a normal rate of return in an alternate market thus there is at least the possibility that we can observe a single active seller choosing the efficient price

individual preferences organization and competition in a model of r d incentive provision abstract understanding the organization of rd 2 knowledge is not perfectly appropriable 3 scientists are responsive to both monetary and non monetary incentives and 4 firms compete on the product market we show that both knowledge spillovers and market competition affect the incentives given to scientists and these effects interact first high knowledge spillovers lead firms to soften incentives when product market competition is high and to strengthen incentives when competition is low second the relationship between the intensity of competition and the power of incentives is u shaped with the exact shape depending on the degree of knowledge spillovers we also show that the performance contingent pay for both applied and basic research increases with the non pecuniary benefits that scientists obtain from research while the fixed component decreases we relate our findings to the existing empirical evidence and also discuss their implications for management and public policy

technology licensing r d and welfare this paper sets up a three stage r d technology licensing and output oligopoly game in which only one of the firms undertakes a cost reducing r d and may license the developed technology to the others by means of a two part tariff i e a per unit royalty and an upfront fee contract it is found with surprise that if the licensor firm s r d efficiency is high the availability of licensing subdues the firm s r d incentive leading to a lower social welfare level this result implies that a government has to be cautious when encouraging technology licensing among firms

timing of technology adoption and product market competition abstract this paper examines how product market competition affects firms timing of adopting a new technology as well as whether the market provides sufficient adoption incentives it demonstrates that adoption dates differ not only among symmetric firms but also among markets with different market features more specifically technology adoption can occur earlier in a market with cournot competition than in a market with bertrand competition it can also occur earlier in a market in which goods are not too close substitutes therefore this paper shows that competition toughness does not always reinforce adoption incentives when goods are sufficiently differentiated adoption occurs later than is socially optimal

natural monopoly and contested markets some experimental results a firm may become a monopolist because the average cost of producing the product reaches a minimum at an output rate that is big enough to satisfy the entire market at a price that is profitable in a situation of this sort if there is more than one firm producing the product each must be producing at a higher thanminimum level of average cost each may be inclined to cut the price to increase its output rate and reduce its average costs the result is likely to be economic warfare and the survival of a single victor the monopolist

the effects of information costs on search and convergence in experimental markets abstract nearly all markets contain some kind of friction making it difficult to reach full efficiency one ubiquitous source of market friction is the cost of obtaining pricing information we determine how market performance as well as buyer and seller behavior are affected by the introduction of price information costs in experimental posted markets rothschild journal of political economy 1973 1283 journal of political economy 1974 689 theorizes that search is negatively related to knowledge of the price dispersion and the cost of search and positively related to market price dispersion we find that market knowledge and the cost of search itself affect search but we find no evidence supporting the role of price dispersion in search decisions we also find evidence supporting smith and plott review of economic studies 1979 133 and walker and williams 1988 both of which show price convergence comes from below in posted bid markets and from above in posted offer markets high information costs tend to reduce or eliminate convergence average prices are above the market clearing price for posted offer markets and below for posted bid markets and never cross the market clearing threshold also consistent with walker and williams more generally our results support the notion of symmetry between experimental posted offer and posted bid markets broadening the relevance of experimental search research

behavioral heuristics and market patterns in a bertrand edgeworth game abstract this paper studies bertrand price setting behavior when firms face capacity constraints bertrand edgeworth game this game is known to lack equilibria in pure strategies while the mixed strategy equilibria are hard to characterize we explore families of heuristic rules for individual price setting behavior and the resulting market patterns through simulations of agent based models and laboratory experiments overall the individual pricing strategies observed experimentally can be represented approximately by a sales based simple rule in the experiments average market prices tend to converge from above and approach a state resembling a steady state with slow aggregate price variations and low price dispersion around an average near the competitive level however that configuration can be disturbed occasionally by excursions triggered by discrete price raises of some agents salient features of experimental results can be described by simulations where agents use sales based heuristics with parameters calibrated from the experiments the results obtained here suggest the existence of useful complementarities between analytical experimental and agent based simulation approaches