getting big too fast strategic dynamics with increasing returns and bounded rationality neoclassical models of strategic behavior have yielded many insights into competitive behavior despite the fact that they often rely on a number of assumptions including instantaneous market clearing and perfect foresight that have been called into question by a broad range of research researchers generally argue that these assumptions are good enough to predict an industry s probable equilibria and that disequilibrium adjustments and bounded rationality have limited competitive implications here we focus on the case of strategy in the presence of increasing returns to highlight how relaxing these two assumptions can lead to outcomes quite different from those predicted by standard neoclassical models prior research suggests that in the presence of increasing returns tight appropriability and accommodating rivals in some circumstances early entrants can achieve sustained competitive advantage by pursuing get big fast gbf strategies rapidly expanding capacity and cutting prices to gain market share advantage and exploit positive feedbacks faster than their rivals using a simulation of the duopoly case we show that when the industry moves slowly compared to capacity adjustment delays boundedly rational firms find their way to the equilibria predicted by conventional models however when market dynamics are rapid relative to capacity adjustment forecasting errors lead to excess capacity overwhelming the advantage conferred by increasing returns our results highlight the risks of ignoring the role of disequilibrium dynamics and bounded rationality in shaping competitive outcomes and demonstrate how both can be incorporated into strategic analysis to form a dynamic behavioral game theory amenable to rigorous analysis

upward pricing pressure in two sided markets measuring upward pricing pressure upp has recently been proposed by farrell and shapiro 2010 as an alternative screening device for horizontal mergers we extend the concept of upp to two sided markets examples of such markets are the newspaper market where the demand for advertising is related to the number of readers and the market for online search where advertising demand depends on the number of users the formulae we derive depend on four sets of diversion ratios that can either be estimated using market level demand data or elicited in surveys in an application we show that it is important to take the two sidedness of the market into account when evaluating upp

technology ecosystem governance technology platform strategies offer a novel way to orchestrate a rich portfolio of contributions made by the many independent actors who form an ecosystem of heterogeneous complementors around a stable platform core this form of organising has been successfully used in smartphone gaming commercial software and industrial sectors technology ecosystems require stability and homogeneity to leverage common investments in standard components but they also need variability and heterogeneity to meet evolving market demand although the required balance between stability and evolvability in the ecosystem has been addressed conceptually in the literature we have less understanding of its underlying mechanics or appropriate governance through an extensive case study of a business software ecosystem consisting of a major multinational manufacturer of enterprise resource planning software at the core and a heterogeneous system of independent implementation partners and solution developers on the periphery o

will dynamic pricing outperform theoretical analysis and empirical evidence from o2o on demand food service market abstract this study attempts to identify the pricing strategy of three most commonly used on demand food service platforms in china based on detailed information of more than 240 000 orders and further evaluates the impact of pricing strategy on platform performance we find that some platforms adopt dynamic pricing strategies while other platforms adopt static pricing strategies considering the unique structure of the o2o on demand food service market in china we develop a dyadic two sided market theory and demonstrate that compared with static pricing strategies dynamic pricing strategies perform better consistent with our theory our empirical analysis also suggests that platforms adopting dynamic pricing strategies have a significantly higher level of demand compared with platforms adopting static strategies in addition our results indicate the importance of delivery speed red envelopes and ratings in promoting demand

price coherence and excessive intermediation suppose an intermediary provides a benefit to buyers when they purchase from sellers using the intermediary s technology we develop a model to show that the intermediary would want to restrict sellers from charging buyers more for transactions it intermediates with this restriction an intermediary can profitably raise demand for its services by eliminating any extra price buyers face for purchasing through the intermediary we show that this leads to inflated retail prices excessive adoption of the intermediaries services over investment in benefits to buyers and a reduction in consumer surplus and sometimes welfare competition among intermediaries intensifies these problems by increasing the magnitude of their effects and broadening the circumstances in which they arise we discuss applications to payment card systems travel reservation systems rebate services and various other intermediaries jel codes d40 l11 l14 l42

do cigarette producers price discriminate by state an empirical analysis of local cigarette pricing and taxation abstract this study analyzes the interactive effects of oligopoly pricing state taxation and anti smoking regulations on retail cigarette prices by state using panel data for the 50 us states between 1960 and 1990 the results indicate that cigarette producers do price discriminate by state though the effect is not large relative to the final retail price there are two further results 1 state taxes are more than passed on a 1 cent state tax increase results in a price increase of 1 11 cents and 2 sellers offset state and local anti smoking laws with lower prices thereby blunting effects of the regulations

estimating dynamic demand for cigarettes using panel data the effects of bootlegging taxation and advertising reconsidered abstracct a dynamic demand for cigarette consumption is estimated using pooled data of 46 states over the period 1963 to 1980 a price elasticity of 0 2 and an insignificant income elasticity is found using pooled estimation techniques the bootlegging effect is modeled explicitly using neighboring price the effect is found to be significant two major policy issues are analyzed in light of these new estimates 1 cigarette taxation is found to be an effective tool for generating revenues even though there may be spillover effects to neighboring states where bootlegging is significant 2 the effects of the fairness doctrine act and the advertising ban on cigarette consumption are re examined we find mild support for the effectiveness of subsidized anti smoking messages in reducing cigarette consumption and no support for the thesis that the ban on advertising helps to increase per capita consumption

the economics of two sided markets at a local best buy a child places a new sony playstation 3 on the cashier s counter while the parents dig out their visa card the gaming system and the payment card may appear to have little connection other than this purchase however these two items share an important characteristic that is generating a series of economic insights and has important implications for strategic decision making and economic policymaking both video game systems and payment cards are examples of two sided markets broadly speaking a two sided market is one in which 1 two sets of agents interact through an intermediary or platform and 2 the decisions of each set of agents affects the outcomes of the other set of agents typically through an externality in the case of a video game system the intermediary is the console producer sony in the scenario above while the two sets of agents are consumers and video game developers neither consumers nor game developers will be interested in the playstation if the other party is not similarly a successful payment card requires both consumer usage and merchant acceptance where both consumers and merchants value each others participation many more products fit into this paradigm such as search engines newspapers and almost any advertisersupported media examples in which consumers often negatively value rather than positively value the participation of the other side as well as most software or title based operating systems and consumer electronics malls which seek retailers and consumers convention organizers which seek buyers and sellers dating services which seek men and women and the journal of economic perspectives which seeks content and readership all experience the economics of two sided markets the multi sided nature of many internet and high technology markets as well as

installed base and compatibility innovation product preannouncements and predation a good is often more valuable to any user the more others use compatible goods the authors show that this effect may inhibit innovation if an installed base exists and transition to a new standard must be gradual early adopters bear a disproportionate share of transient incompatibility costs this can produce excess inertia the installed base however is stranded if the new standard is adopted this may create excess momentum these dynamic effects have strategic implications temporary price cutting can permanently prevent entry and product preannouncements can be critical in innovation these strategic actions have ambiguous welfare effects

first party content and coordination in two sided markets the strategic use of first party content by two sided platforms is driven by two key factors the nature of buyer and seller expectations favorable versus unfavorable and the nature of the relationship between first party content and third party content complements or substitutes platforms facing unfavorable expectations face an additional constraint their prices and first party content investment need to be such that low zero participation equilibria are eliminated this additional constraint typically leads them to invest more less in first party content relative to platforms facing favorable expectations when first and third party content are substitutes complements these results hold with both simultaneous and sequential entry of the two sides with two competing platforms incumbent facing favorable expectations and entrant facing unfavorable expectations and multi homing on one side of the market the incumbent always invests weakly more in first party content relative to the case in which it is a monopolist this paper was accepted by bruno cassiman business strategy

platform competition in two sided markets many if not most markets with network externalities are two sided to succeed platforms in industries such as software portals and media payment systems and the internet must get both sides of the market on board accordingly platforms devote much attention to their business model that is to how they court each side while making money overall this paper builds a model of platform competition with two sided markets it unveils the determinants of price allocation and end user surplus for different governance structures profit maximizing platforms and not for profit joint undertakings and compares the outcomes with those under an integrated monopolist and a ramsey planner jel l5 l82 l86 l96

information goods vs industrial goods cost structure and competition we study markets for information goods and find that they differ significantly from markets for traditional industrial goods markets for information goods in which products are vertically differentiated lack the segmentation inherent in markets for industrial goods as a result a monopoly will offer only a single product competition leads to highly concentrated information good markets with the leading firm behaving almost like a monopoly even with free entry and without network effects we study how the structure of the firms cost functions drives our results this paper was accepted by barrie r nault information systems

cross sided liquidity externalities we study the empirical relevance of the participation externality between liquidity suppliers makers and demanders takers i e whether liquidity demand attracts or reduces liquidity supply and vice versa we use exogenous shocks to exchange fees and technology as experiments to identify cross sided complementarities between liquidity suppliers and demanders in the u s equity market we find that the externality is large and positive on average however the externality is negative in periods of high adverse selection we quantify the economic significance of the externality by evaluating an exchange s revenue after a fee change the internet appendix is available at https doi org 10 1287 mnsc 2016 2658 this paper was accepted by lauren cohen finance

measurement of monopoly behavior an application to the cigarette industry a simple scheme is proposed to measure monopoly pricing behavior the coefficient of the tax rate term in a price equation identifies the ratio of price to marginal cost no direct measurement of costs is required so a major problem for other empirical studies of monopoly is avoided empirical results for cross section time series data support rejection of atomistic competition but also provide evidence against the operation of an effective cartel in the cigarette industry the model represents an alternative interpretation of related results in a recent paper by barzel application of the methodology to other markets is feasible

competing by restricting choice the case of search platforms we show that a two sided matching platform can successfully compete by limiting the number of choices it offers to its customers while charging higher prices than platforms with unrestricted choice we develop a stylized model of online dating where agents with different outside options match based on how much they like each other starting from these microfoundations we derive the strength and direction of indirect network effects and show that increasing the number of potential matches has a positive effect due to larger choice but also a negative effect due to competition between agents on the same side agents resolve the trade off between these competing effects differently depending on their outside options for agents with high outside options the choice effect is stronger than the competition effect leading them to prefer an unrestricted choice platform the opposite is the case for agents with low outside options who then have higher willingness to pay for a platform restricting choice as

impatience incentives and obesity this paper explores the relationship between time preferences economic incentives and body mass index bmi using data from the 2006 national longitudinal survey of youth we rst show that greater impatience increases bmi and the likelihood of obesity even after controlling for demographic human capital occupational and nancial characteristics as well as risk preference next we provide evidence of an interaction

chicken and egg competition among intermediation service providers we analyze a model of imperfect price competition between intermediation service providers we insist on features that are relevant for informational intermediation via the internet the presence of indirect network externalities the possibility of using the nonexclusive services of several intermediaries and the widespread practice of price discrimination based on users identity and on usage efficient market structures emerge in equilibrium as well as some specific form of inefficient structures intermediaries have incentives to propose non exclusive services as this moderates competition and allows them to exert market power we analyze in detail the pricing and business strategies followed by intermediation services providers copyright 2003 by the rand corporation

the big bug the legitimation of the edible insect sector in the netherlands abstract this study analyzes the legitimation process of an emerging novel food sector in the european union eu current eu policies are cautious with regard to new food sources and new food technology and we aim to determine how the sector is addressing both this caution as well as a general public that may be skeptical of its products by utilizing a legitimacy strategy framework and conducting 19 semi structured interviews with actors and experts in the dutch edible insect sector we assess the sector s progress and limitations with regard to its legitimacy journey the findings show that sector focus has thus far been on organization intraindustry and interindustry legitimacy strategies and that additional emphasis on institutional strategies will be imperative to securing more accommodating legislation in addition the lack of a common vision a strategic communication plan and interfirm linkages may also be hindering sector legitimation the framework and conclusions presented here may prove useful to other sectors introducing novel foods

cigarette tax avoidance and evasion variation in state cigarette taxes provides incentives for tax avoidance through smuggling legal border crossing to low tax jurisdictions or internet purchasing when taxes rise tax paid sales of cigarettes will decline both because consumption will decrease and because tax avoidance will increase the key innovation of this paper is to compare cigarette sales data to cigarette consumption data from the behavioral risk factor surveillance system brfss i show that after subtracting percent changes in consumption residual percent changes in sales are associated with state cigarette tax changes implying the existence of tax avoidance i estimate that the tax avoidance response to tax changes is at least twice the consumption response and that tax avoidance accounted for up to 9 6 of sales between 1985 and 2001 because of the increase in tax avoidance tax paid sales data understate the level of smoking and overstate the drop in smoking i also find that the level of legal border crossing was very low relative to other forms of tax avoidance if states have strong preferences for smoking control they must pair high cigarette taxes with effective policies to curb smuggling and other forms of tax avoidance or employ alternative policies such as counter advertising and smoking restrictions

the relationship between smoking quitting smoking and obesity in australia a seemingly unrelated probit approach smoking and obesity are two leading causes of preventable death further understanding of the relationship between these two risk factors can assist in reducing avoidable morbidity and mortality this study investigates the empirical association between obesity and the propensity to smoke and to quit smoking using a seemingly unrelated sur probit approach that takes into consideration the potential for reverse causality and unobserved heterogeneity using australian health survey data this article demonstrates the usefulness of the sur probit approach in generating information on the relationship between unobserved factors influencing both smoking behaviour and obesity and in providing estimates of the conditional probabilities of each risk factor results suggest the two risk factors are not independent the presence size and direction of correlation between the unobserved factors are found to vary by smoking behaviour and by gender estimates of conditional probabilities demonstrate smokers have a

do minimum wage increases influence worker health this study investigates whether minimum wage increases impact worker health in the united states we consider self reported measures of general mental and physical health we use data on lesser skilled workers from the 1993 to 2014 behavioral risk factor surveillance survey among men we find no evidence that minimum wage increases improve health instead we find that such increases lead to worse health outcomes particularly among unemployed men we find both worsening general health and improved mental health following minimum wage increases among women these findings broaden our understanding of the full impacts of minimum wage increases on lesser skill workers jel i1 i11 i18

network externality an uncommon tragedy economists have defined network externality and have examined putative inframarginal market failures associated with it this paper distinguishes between network effects and network externalities where the latter are market failures the authors argue that while network effects are important network externalities are theoretically fragile and empirically undocumented some network externalities are merely pecuniary network ownership or transactions among network participants can internalize some network effects the type of market failure that has been associated with these externalities is a transition problem that has little to do with externality

global platforms and ecosystems implications for international business theories the emergence of digital platforms and ecosystems dpe as a venue for value creation and capture for multinational enterprises holds considerable implications for the theory and practice of international business in this paper we articulate these implications by considering the dual perspectives of cross border platforms and ecosystems as a venue for multifaceted innovation and as multisided marketplace and focusing on three overarching themes at the intersection of dpes and international business that is dpes as affording new ways of internationalization as facilitating new ways of building knowledge and relationships and as enabling new ways of creating and delivering value to global customers we explain specific dpe related concepts and constructs that underlie these themes and discuss how they could be incorporated into existing ib theories in ways that would enhance their richness and continued relevance as well as their ability to better predict a multitude of emerging ib phenomena

bertrand competition under network externalities abstract two firms engage in price competition to attract buyers located on a network the value of the good of either firm to any buyer depends on the number of neighbors on the network who adopt the same good when the size of externalities increases linearly with the number of adoptions we identify the set of pricing strategies that are consistent with an equilibrium in which one of the firms monopolizes the market the set includes marginal cost mc pricing as well as bipartition pricing which offers discounts to some buyers and charges markups to others we show that mc pricing fails to be an equilibrium under non linear externalities in a general network but identify conditions for an equilibrium with bipartition pricing to be robust against perturbations in the externalities from linearity the analysis is applied to platform competition in a two sided market under local and approximately linear externalities

rising cigarette prices and rising obesity coincidence or unintended consequence economists have begun to debate if the rise in cigarette prices in the u s in recent decades has contributed to the nation s rise in obesity reaching conclusions that are surprisingly sensitive to specification i show that allowing for the effect to occur gradually over several years leads to the conclusion that a rise in cigarette prices is actually associated with a long run reduction in body mass index and obesity this result is robust to the different methodologies used in the literature i also provide evidence that indirect effects on exercise and food consumption may explain the counterintuitive result

firm strategies in the mid tail of platform based retailing while millions of products are sold on its retail platform amazon com itself stocks and sells only a very small fraction of them most of these products are sold by third party sellers who pay amazon a fee for each unit sold empirical evidence clearly suggests that amazon tends to sell high demand products and leave long tail products for independent sellers to offer we investigate how a platform owner such as amazon facing ex ante demand uncertainty may strategically learn from these sellers early sales which of the mid tail products are worthwhile for its direct selling and which are best left for others to sell the platform owner s cherry picking of the successful products however gives an independent seller the incentive to mask any high demand by lowering his sales with a reduced service level unobserved by the platform owner we analyze this strategic interaction between a platform owner and an independent seller using a game theoretic model with two types of sellers one with high demand and one with low demand we show that it may not always be optimal for the platform owner to identify the seller s demand interestingly the platform owner may be worse off by retaining its option to sell the independent seller s product whereas both types of sellers may benefit from the platform owner s threat of entry the platform owner s entry option may reduce consumer surplus in the early period although it increases consumer surplus in the later period we also investigate how consumer reviews influence the market outcome

tying foreclosure and exclusion in recent years the leverage theory of tied good sales has faced heavy and influential criticism in an important sense though the models used by its critics are actually incapable of addressing the leverage theory s central concerns here the author reconsiders the leverage hypothesis and argues that tying can indeed serve as a mechanism for leveraging market power the mechanism through which this leverage occurs its profitability and its welfare implications are discussed in detail copyright 1990 by american economic association

cross market network effect with asymmetric customer loyalty implications for competitive advantage a cross market network effect exists in many industries e g newspaper publishing media software in which a seller sells both a primary and a secondary product e g a newspaper publisher sells newspapers to readers and advertising space to advertisers and the value of the secondary product depends on the size of the user base of the primary product this paper examines the competitive implications of asymmetric customer loyalty in such markets in traditional markets an advantage in customer loyalty generates a profit advantage we show here however that in the presence of a cross market network effect a midlevel of loyalty advantage in the primary product market can lead to an overall profit disadvantage this surprising result is derived from the interdependence of the two markets whereby a profit in one market may be gained at the cost of the other and by the positive relationship between a larger loyalty segment and a higher opportunity cost of price competition in the product of the primary market extending our model to a two period entry game also shows that under certain conditions the entrant with disadvantage in customer loyalty can outperform the incumbent in profit and market share this result suggests that asymmetry in customer loyalty can be a source of first mover advantage or disadvantage

can changing economic factors explain the rise in obesity a growing literature examines the effects of economic variables on obesity typically focusing on only one or a few factors at a time we build a more comprehensive economic model of body weight combining the 1990 2010 behavioral risk factor surveillance system with 27 state level variables related to general economic conditions labor supply and the monetary or time costs of calorie intake physical activity and cigarette smoking controlling for demographic characteristics and state and year fixed effects changes in these economic variables collectively explain 37 of the rise in body mass index bmi 43 of the rise in obesity and 59 of the rise in class ii iii obesity quantile regressions also point to large effects among the heaviest individuals with half the rise in the 90th percentile of bmi explained by economic factors variables related to calorie intake particularly restaurant and supercenter warehouse club densities are the primary drivers of the results

exploring the trade off between immediate gratification and delayed network externalities in the consumption of information goods abstract our motivation for this paper originates from recent advances in consumption and payment technologies available for mobile commerce ubiquitous computing is enabling consumers worldwide to reach digital content and services whenever and wherever they request it this capability further fuels impatience in consumption of such information goods we model such consumer behavior using a hyperbolic discounting approach a subset of these products especially software also inherit delayed network externalities as part of their consumption characteristics this builds a tension between decision to consume now or to expedite consumption we build a stylized model to assess the impact of immediate gratification on the profit maximizing behavior of a monopolist firm which produces an information good with network externalities we find that serving impatient consumers is always profitable for a monopolist for lower levels of network externalities the monopolist can increase first period and decrease second period prices in equilibrium as network externalities effect increases prices converge to the traditional market with exponential discounters levels

internalization theory for the digital economy we study the internationalization of digital service multinational enterprises smncs focusing on how digitalization alters internalization theory s assumptions about the nature of firm specific assets fsas and the theory s predictions about governance choices in cross border transactions we invoke simon s proc am philos soc 106 6 467 482 1962 near decomposability concept to explain how digitalization enables two distinct types of fsas technology and human capital applying the ideas of modularity and skill complexity we further distinguish between core versus peripheral technology fsas and between generic versus advanced human capital fsas building on the transferability and appropriability of these strategic assets we theorize on the fsas internalization propensity in the digital age we propose that with rising digitalization the network plays a dual role as a governance mode and as a strategic resource integrating insights from network economics particularly increasing returns to scale we propose that network advantages on emerge as a distinct strategic resource that merits separate investigation from the traditional asset based oa and transaction based ot advantages

the economics of networks a survey of the empirical literature network effects the increase in value of consuming a product if many other consumers use the same product are a feature of many markets and in particular of many high technology products this paper surveys the burgeoning empirical literature that has developed especially during the last years after theoretical work dominated the earlier years of research in this area newer research has combined theoretical models with empirical studies and applied work with direct implications for public policy marketing and company strategies furthermore insights from the study of social networks have been applied to analyse how consumers interact with each other the paper argues that a closer analysis of the network structure of consumer interaction promises fruitful future research avenues and advances in our understanding of how network effects operate copyright 2009 blackwell publishing ltd

reply to jonathan gruber and michael frakes we address gruber and frakes s criticisms that 1 the state excise tax on a package of cigarettes is a more exogenous measure of the cost of cigarettes than the state specific price of a package of cigarettes and 2 that it is preferable to control for the effects of unmeasured variables that vary over time with the use of time dummies instead of with a quadratic time trend we also point out that our specification of the cost effect differs from theirs because we allow it to be nonlinear while they force it to be linear

the lineages of the entrepreneurial ecosystem approach in its most abstract sense an ecosystem is a biotic community encompassing its physical environment and all the interactions possible in the complex of living and nonliving components economics has always been about systems that explain differential output and outcomes however economics has generally ignored the role of entrepreneurship in economic systems just as entrepreneurship studies have largely overlooked the role of systems in explaining the prevalence and performance of entrepreneurship the entrepreneurial ecosystem approach has the promise to correct these shortcomings its two dominant lineages are the regional development literature and the strategy literature both lineages share common roots in ecological systems thinking providing fresh insights into the interdependence of actors in a particular community to create new value but studies of both regional development and strategic management have largely ignored the role of entrepreneurs in new value creation in this paper we will outline contributions to the entrepreneurial ecosystem approach and conclude with a promising new line of research to our understanding of the emergence growth and context of start ups that have achieved great impact by developing new platforms

two sided markets a progress report the paper provides a road map to the burgeoning literature on two sided markets and presents new results it identifies two sided markets with markets in which the structure and not only the level of prices charged by platforms matters the failure of the coase theorem is necessary but not sufficient for two sidedness the paper builds a model integrating usage and membership externalities that unifies two hitherto disparate strands of the literature emphasizing either form of externality and obtains new results on the mix of membership and usage charges when price setting or bargaining determine payments between end users

marketplace or reseller intermediaries can choose between functioning as a marketplace in which suppliers sell their products directly to buyers or as a reseller by purchasing products from suppliers and selling them to buyers we model this as a decision between whether control rights over a noncontractible decision variable the choice of some marketing activity are better held by suppliers the marketplace mode or by the intermediary the reseller mode whether the marketplace or the reseller mode is preferred depends on whether independent suppliers or the intermediary have more important information relevant to the optimal tailoring of marketing activities for each specific product we show that this trade off is shifted toward the reseller mode when marketing activities create spillovers across products and when network effects lead to unfavorable expectations about supplier participation if the reseller has a variable cost advantage respectively disadvantage relative to the marketplace then the trade off is shifted toward the marketplace for long tail respectively short tail products we thus provide a theory of which products an intermediary should offer in each mode we also provide some empirical evidence that supports our main results data as supplemental material are available at http dx doi org 10 1287 mnsc 2014 2042 this paper was accepted by bruno cassiman business strategy

two sided network effects a theory of information product design how can firms profitably give away free products this paper provides a novel answer and articulates trade offs in a space of information product design we introduce a formal model of two sided network externalities based in textbook economics a mix of katz and shapiro network effects price discrimination and product differentiation externality based complements however exploit a different mechanism than either tying or lock in even as they help to explain many recent strategies such as those of firms selling operating systems internet browsers games music and video the model presented here argues for three simple but useful results first even in the absence of competition a firm can rationally invest in a product it intends to give away into perpetuity second we identify distinct markets for content providers and end consumers and show that either can be a candidate for a free good third product coupling across markets can increase consumer welfare even as it increases firm profits the model also generates testable hypotheses on the size and direction of network effects while offering insights to regulators seeking to apply antitrust law to network markets

trade off between obesity and tobacco consumption recent evidence suggests that obesity and tobacco prevalence rates are moving in the opposite direction this study examines the causal relationship between these variables in argentina the effects of tobacco consumption on body weight are estimated by using instrumental variables to address endogeneity problems to this end the entry into force of provincial laws on tobacco control at different times are exploited our results show that smoking has a negative impact on three weight measures bmi weight in kilograms obesity rate this nding suggests that anti smoking measures should be complemented with nutritional controls and the promotion of physical exercise

search diversion and platform competition abstract platforms use search diversion in order to trade off total consumer traffic for higher revenues derived by exposing consumers to unsolicited products e g advertising we show that competition between platforms leads to lower equilibrium levels of search diversion relative to a monopoly platform when the intensity of competition is high on the other hand if there is only mild competition then competing platforms induce more search diversion relative to a platform monopolist when platforms charge consumers fixed access fees all equilibrium levels of search diversion under platform competition are equal to the monopoly level irrespective of the nature of competition furthermore relative to platforms that cannot charge such fees platforms that charge positive negative access fees to consumers have weaker stronger incentives to divert search

non separable time preferences novelty consumption and body weight theory and evidence from the east german transition to capitalism abstract this paper develops a dynamic model to illustrate how diet and body weight change when novel food products become available to consumers we propose a microfounded test to empirically discriminate between habit and taste formation in intertemporal preferences moreover we show that novelty consumption and endogenous preferences can explain the persistent correlation between economic development and obesity by empirically studying the german reunification we find that east germans consumed more novel western food and gained more weight than west germans when a larger variety of food products became readily accessible after the fall of the wall the observed consumption patterns suggest that food consumption features habit formation

supersizing supercenters the impact of walmart supercenters on body mass index and obesity abstract researchers have linked the rise in obesity to technological progress reducing the opportunity cost of food consumption and increasing the opportunity cost of physical activity we examine this hypothesis in the context of walmart supercenters whose advancements in retail logistics have translated to substantial reductions in the prices of food and other consumer goods using data from the behavioral risk factor surveillance system matched with walmart supercenter entry dates and locations we examine the effects of supercenters on body mass index bmi and obesity we account for the endogeneity of walmart supercenter locations with an instrumental variables approach that exploits the unique geographical pattern of supercenter expansion around walmart s headquarters in bentonville arkansas an additional supercenter per 100 000 residents increases average bmi by 0 24 units and the obesity rate by 2 3 points these results imply that the proliferation of walmart supercenters explains 10 5 of the rise in obesity since the late 1980s but the resulting increase in medical expenditures offsets only a small portion of consumers savings from shopping at supercenters

a graphical analysis of bundling by comparing the demand for a bundle and the vertical sum of the demands for its components this article analyzes the profitability and welfare consequences of bundling if it does not lower costs bundling tends to be profitable when reservation values are negatively correlated and high relative to costs if bundling lowers costs and costs are high relative to average reservation values positively correlated reservation values increase the incentive to bundle bundling and charging a price equal to the sum of the components prices lowers consumer surplus bundling can however increase consumer surplus when it results in lower prices copyright 1995 by university of chicago press

the effects of soft drink taxes on child and adolescent consumption and weight outcomes abstract childhood and adolescent obesity is associated with serious adverse lifetime health consequences and its prevalence has increased rapidly soft drink consumption has also expanded rapidly so much so that soft drinks are currently the largest single contributors to energy intake in this paper we investigate the potential for soft drink taxes to combat rising levels of child and adolescent obesity through a reduction in consumption our results based on state soft drink sales and excise tax information between 1989 and 2006 and the national health examination and nutrition survey suggest that soft drink taxation as currently practiced in the united states leads to a moderate reduction in soft drink consumption by children and adolescents however we show that this reduction in soda consumption is completely offset by increases in consumption of other high calorie drinks

platform pricing redux platforms such as airbnb amazon apple ios ebay microsoft windows and uber are ubiquitous the two sided nature of platform markets however requires a reconsideration of the conditions for profit maximization and understanding of how platforms operate profit maximization in two sided markets is characterized as an intuitive extension of the inverse elasticity pricing rule lerner index this is further expressed in terms of the participants primitives users reservation values and the platform s marginal cost differences between one and two sided markets are demonstrated and discussed

understanding overeating and obesity abstract the combination of economic and biological factors is likely to result in overeating in the current environment of cheap and readily available food this propensity is shown using a dual decision approach where choices reflect the interaction of a deliberative system operating as in standard economic models and an affective system that responds rapidly to stimuli without considering long term consequences this framework is characterized by excess food consumption and body weight in that individuals prefer both ex ante and ex post to eat and weigh less than they actually do with weight loss attempts being common but often unsuccessful or only partially successful as in the standard model weight is related to prices however another potentially important reason for rising obesity is that food producers have incentives to engineer products to stimulate the affective system so as to encourage overeating data from several sources are used to investigate predictions of the dual decision model with the evidence providing broad support for at least some irrationality in food consumption most importantly there is little indication that the large secular increases in body mass index have been accompanied by corresponding growth in utility maximizing weight one result is that efforts to reduce weight have become more common as obesity has increased

mechanism and network design with private negative externalities a revenue maximizing monopolist is selling a single indivisible good to buyers who face a loss if any of its rival buyers obtain it the rivalry is modeled through a network an arc between a pair of buyers indicates that a buyer considers another buyer its rival and the magnitude of the loss is the private information of each buyer this loss exposure due to competitive considerations can be viewed as a negative externality first using a myersonian approach we derive the monopolist s optimal mechanism for any given network second we show that revenues depend on the network structure thus in applications where it is possible the monopolist might consider designing not only the mechanism but also the network if not fully at least partially third we provide and fully describe the solution to the monopolist s market design problem that is the joint network and mechanism design problem specifically despite the nonmonotone impact of additional competition on the monopolist s revenues we deter