price wars caused by switching costs in many markets consumers have switching costs for example learning costs or transaction costs of changing between functionally equivalent brands of a product or of using any brand for the first time we analyse a four period complete information model of a market with switching costs in which new entry occurs after the second period the new entry results in equilibrium in a price war that is the new entrants prices are higher in the post entry period than in the entry period and the incumbent s price falls in either the pre entry period or the entry period and subsequently rises we can interpret the incumbent s lowering its price in the pre entry period as limit pricing behaviour we distinguish between two types of price war that can occur and show how the type or mixture of types that arises depends on the size of switching costs

one size fits all towards a differentiated regional innovation policy approach innovation has moved to the foreground in regional policy in the last decade concrete policies were shaped by best practice models derived from high tech areas and well performing regions these are often applied in a similar way across many types of regions here an attempt is made to show that there is no ideal model for innovation policy as innovation activities differ strongly between central peripheral and old industrial areas in this paper we analyse different types of regions with respect to their preconditions for innovation networking and innovation barriers based on this classification different policy options and strategies are developed

consumption and the credit market abstract this paper uses a kalman filter model to allow the fraction of current income consumers to vary over time and shows that these consumers are liquidity constrained by relating this percentage to measures of credit market tightness

interfirm rivalry in a repeated game an empirical test of tacit collusion rivalry in the vancouver retail gasoline market is modeled as a repeated game service station demand cost and intertemporal reaction functions are estimated from daily data on individual station prices costs and sales these functions are then used to calculate noncooperative and cooperative solutions to the constitutent game and the actual outcome of the repeated game the actual outcome is found to be substantially less lucrative than the monopoly solution nevertheless all stations are better off than if they played their noncooperative strategies in every period copyright 1987 by blackwell publishing ltd

territorial innovation models a critical survey moulaert f and sekia f 2003 territorial innovation models a critical survey reg studies 37 289 302 this paper provides a critical review of the literature on territorial innovation models industrial districts milieux innovateurs new industrial spaces local production systems etc the review is organized in two stages first the main features of each of these models and their view of innovation are compared second their theoretical building blocks are reconstructed and evaluated from the point of view of conceptual clarity and analytical coherence it is found that despite some semantic unity among the concepts used economies of agglomeration endogenous development systems of innovation evolution and learning network organization and governance territorial innovation models tims suffer from conceptual ambiguity the latter is mainly a consequence of the way territorial innovation is theorized i e in terms of technologically driven innovation and a business culture that is ma

regional innovation systems theory empirics and policy asheim b t lawton smith h and oughton c regional innovation systems theory empirics and policy regional studies interest in regional innovation systems has grown significantly over the past three decades driven partly by advances in theoretical analysis partly by the growing interest in innovation as a source of competitive advantage and partly by the need for new policies to address regional inequalities and divergence this article explores the elements and characteristics that exemplify the regional innovation systems approach it provides an appraisal and synthesis of the regional innovation systems paradigm and aims to shed light on a number of areas where theoretical empirical and policy based questions remain unanswered it outlines and assesses the major strands in recent theoretical and empirical debates and discusses how they might be developed to contribute to the further advancement of the regional innovation systems literature three interrelated questions form the key themes arou

on the stability of the excess sensitivity of aggregate consumption growth in the usa summary this paper investigates whether there is time variation in the excess sensitivity of aggregate consumption growth to anticipated aggregate disposable income growth using quarterly us data over the period 1953 2014 our empirical framework contains the possibility of stickiness in aggregate consumption growth and takes into account measurement error and time aggregation our empirical specification is cast into a bayesian state space model and estimated using markov chain monte carlo mcmc methods we use a bayesian model selection approach to deal with the non regular test for the null hypothesis of no time variation in the excess sensitivity parameter anticipated disposable income growth is calculated by incorporating an instrumental variables estimation approach into our mcmc algorithm our results suggest that the excess sensitivity parameter in the usa is stable at around 0 23 over the entire sample period copyright 2016 john wiley sons ltd

moving innovation systems research to the next level towards an integrative agenda the concept of innovation systems has been a guiding paradigm of innovation research and strongly influenced research and innovation policy since the early 1990s in spite of this success criticisms have been raised in recent years about whether it is still a suitable framework for addressing the innovation related challenges of the future in the present paper we claim that systemic explanations of innovation success have still a very important role to play in order to address the rising criticism however we have to reconsider the conceptual core of the family of innovation systems is approaches and sketch out a path for renewal the paper retraces the conceptual roots of is approaches assesses their uptake in different policy circles around the world discusses the conceptual core and explanatory ambition and finally formulates a future oriented research agenda for a more integrative innovation systems framework

regional innovation evolution and economic performance abstractconceptual reflections and empirical evidence on the evolution of regional innovation processes are increasing in recent years this paper contributes to this debate by focusing on the long

habit formation in consumer preferences evidence from panel data this paper tests for the presence of habit formation using household data a simple model of habit formation implies a condition relating the strength of habits to the evolution of consumption over time when the condition is estimated with food consumption data from the panel study on income dynamics the results yield no evidence of habit formation at the annual frequency this finding is robust to a number of changes in the specification it also holds for several proxies for nondurables and services consumption created by combining psid variables with weights estimated from consumer expenditure survey data

trust interlinking transactions and credit in the industrial district an essential feature of the industrial district is trust among individuals and firms within it this paper focuses mainly on trust based on investments in building up a good reputation that is a personal capital that can even substitute for collateral in obtaining credit informal credit often linked to other transactions and especially subcontracting is therefore an important way of financing economic development in the industrial district moreover the importance of trust as personal capital gives rise to a double financial intermediation in the industrial district this double intermediation constitutes a device to reduce information problems that are usually responsible for credit rationing c 1994 academic press inc copyright 1994 by oxford university press

power in firm networks what it means for regional innovation systems christopherson s clark j 2007 power in firm networks what it means for regional innovation systems regional studies 41 1223 1236 the role of power within regional firm networks is noted in empirical studies but insufficiently theorized it is suggested that network functioning is conflictual and that more powerful network members particularly transnational corporations tncs leverage regional resources to advance their sustainable competitive advantage the agendas and power exercised by tncs within regionalized firm networks have significant implications for regional policy and the uneven allocation of resources and capacities within and among regions the findings indicate that transnational firm access to resources that are critical to innovation including university research and skilled labour negatively affects the potential for innovation by small and medium size firms christopherson s et clark j 2007 le pouvoir au sein des reseaux d entreprise son importance pour les systemes d

jockeying for position what it means and why it matters to regional development policy when places compete malecki e j 2004 jockeying for position what it means and why it matters to regional development policy when places compete regional studies38 1093 1112 the realization that places compete for investment has expanded in recent years to encompass competition among places for the attention of migrants tourists and media glow as well as investment the most competitive places have been multidimensional in their attractions and have made the transition to the knowledge based economy the latest priority is being placed on attracting mobile workers and mobile investment creative workers are the core of the knowledge economy and of its geographies such as intelligent places and learning regions knowledge metrics innovation indices and report cards are increasingly common each seemingly developed to sort the list of places in a different order lists or league tables of the best places for business to live retire and visit are key features of economies and societies whose factors of success

how to institutionalize innovative clusters comparing explicit top down and implicit bottom up approaches abstract the cluster concept has become a popular guideline for regional policies fostering industrial competitiveness and innovativeness based on sectoral specialization and collaboration this article discusses the issue of effective institutional forms of cluster promotion juxtaposing two modes explicit cluster policies implemented top down by regional authorities and implicit initiatives that are organized and financed bottom up by groups of firms both approaches are compared from a theoretical and empirical perspective pointing out differing patterns of effects relative strengths and weaknesses realization of these differences considered in relation to regional preconditions and objectives may help to adequately institutionalize cluster support

industrial districts social cohesion and economic decline in italy the paper argues that the so called canonical view of the italian industrial district id depicts it as a system whose economic and social vitality requires the interaction between two major sub systems a community of people and a community of firms a range of circumstances including insufficient aggregate demand competition from low cost coun tries and technological change have determined inconsistencies between the rationales of these two sub systems as a result lead firms have emerged that substitute the id as coordinating instances in the pursuit of their goals they tend to prefer cost scrapping to quality enhancement thereby determining a competition that further undermines the id as a system the paper contends that this outcome is not the only possible one an alternative would require the regulatory as opposed to merely permissive action of pub lic actors in that it would have to change the incentive system that leads firms to choose short sighted strategies

rule of thumb consumers productivity and hours in this paper we study the transmission mechanism of productivity shocks in a model with rule of thumb consumers in the literature this nancial friction has been studied only with reference to scal shocks we show that the presence of rule of thumb consumers is also very helpful in accounting for recent empirical evidence on productivity shocks rule of thumb agents together with nominal and real rigidities play an important role in reproducing the negative response of hours and the delayed responses of output and

industrial districts old wine in new bottles harrison b 1992 industrial districts old wine in new bottles reg studies 26 469 483 according to the theory of industrial districts a new wave of economic growth is being led in a number of regions in europe north america and east asia by spatially concentrated networks of mostly small and medium sized enterprises often using flexible production technology and characterized by extensive local interfirm linkages does this amount to a re emergence of the dominance of what urban and regional economists call agglomeration economies over the well known pressures on business to spatially disperse its operations neoclassical economic theorizing from marshall to perroux provides one perspective on the contemporary industrial district phenomenon another is afforded by granovetter s more recent elaboration of the ideas of embedding under and over socialization confronting each of these theoretical approaches with the other leads me to conclude that the industrial district prototypes involv

international evidence on sticky consumption growth abstract this paper estimates the degree of stickiness in aggregate consumption growth sometimes interpreted as reflecting consumption habits for thirteen advanced economies we find that after controlling for measurement error consumption growth has a high degree of autocorrelation with a stickiness parameter of about 0 7 on average across countries the sticky consumption growth model outperforms the random walk model of hall 1978 and typically fits the data better than the popular mankiw 1989 model though in a few countries the sticky consumption growth and campbell mankiw models work about equally well

foreign aid and market liberalizing reform market oriented economic policies reflected in limited economic activity by government protection of private property rights sound monetary policy outward orientation regarding trade and efficient tax and regulatory policy have been strongly linked to faster rates of economic growth foreign aid is often provided in the belief that it encourages liberalizing reforms in these areas this paper analyzes the impact of aid on market liberalizing policy reform correcting for the possible endogeneity of aid results indicate that higher aid slowed reform over the 1980 2000 period as measured by a broad index of policies disaggregating policy into five areas aid is significantly linked to slower reform in some policy areas but not in others disaggregating by decade aid s adverse impact on policy reform is much more pronounced for the 1980s than for the 1990s

agglomeration economies interregional commuting and innovation in the peripheries regional development and innovation are often studied in the context of agglomeration economies leading to a perception bias regarding the virtues of cities recent work on interregional connectiv

the predictability of aggregate consumption growth in oecd countries a panel data analysis we examine aggregate consumption growth predictability we derive a dynamic consumption equation which encompasses relevant predictability factors habit formation intertemporal substitution current income consumption and non separabilities between private consumption and both hours worked and government consumption we estimate this equation for a panel of 15 oecd countries over the period 1972 2007 taking into account parameter heterogeneity endogeneity and error cross sectional dependence using a gmm version of the common correlated effects mean group estimator small sample properties are demonstrated using monte carlo simulations the estimation results support income growth as the only variable with significant predictive power for aggregate consumption growth

habit formation in consumption and its implications for monetary policy models this paper explores a monetary policy model with habit formation for consumers in which consumers utility depends in part on current consumption relative to past consumption the empirical tests developed in the paper show that one can reject the hypothesis of no habit formation with tremendous condence largely because the habit formation model captures the gradual hump shaped response of real spending to various shocks the paper then embeds the habit consumption specication in a monetary policy model and nds that the responses of both spending and inflation to monetary policy actions are signicantly improved by this modication jel d12 e52 e43

price wars triggered by entry abstract to attract customers who incur set up or switching costs new firms offer below market prices when entering a market the incumbent responds with discounts resulting in a price war once new entrants have locked in their customers the price warfare stops and all firms raise their prices during the price war the incumbent s price is not as low as the entrants after the price war the market price is lower and output is greater than the pre entry price and output entrants attract new buyers to the market and depending on the size distribution of set up costs we show that some of the incumbent s customers switch to entrants the model is shown to square with the price and output sequences observed in a price war that was the subject of a recent and prominent antitrust case in the cigarette market

beyond economic base theory the role of the residential economy in attracting income to swiss regions segessemann a and crevoisier o beyond economic base theory the role of the residential economy in attracting income to swiss regions regional studies regional development theories are mainly focused on export based activities to explain regional competitiveness the increasing mobility of workers and residents leads to a reconsideration of this approach residential economy has become a strategic issue to generate incomes within regions with this view the paper analyses the link between economic activities and incomes from workers and annuitants residents a spatial typology breakdown is compiled for swiss regions using a hierarchical cluster analysis hca empirical results highlight various regional development profiles conversely to export based theories regions with higher income are those with strong residential economy thus opening new avenues for local governance

saving and liquidity constraints this paper is concerned with the theory of saving when consumers are not permitted to borrow and with the ability of such a theory to account for some of the stylized facts of saving behavior the models presented in the paper seem to account for important aspects of reality that are not explained by traditional life cycle models copyright 1991 by the econometric society

liquidity constraints and the substitutability between private and government consumption the role of military and non military spending i introduction using data for a number of economies we investigate i the relationship between private consumption and two types of government spending military and non military and ii the severity of liquidity constraints because of their importance for macroeconomic modeling in theory and practice 1 both issues have been the subjects of considerable theoretical and empirical investigation on the issue of liquidity constraints the most influential research has relied on hall s 1978 euler equation approach to the permanent income hypothesis in an attempt to reconcile hall s and flavin s 1981 methodologies hayashi 1982 modified hall s martingale result to allow for the possibility that a subset of consumers are liquidity constrained and showed that liquidity constraints can result in consumption s excess sensitivity to current income campbell and mankiw 1989 1990 1991 and jappelli and pagano 1989 have applied hayashi s methodology using data from the u s and several other oecd countries on the substitutability issue aschauer 1985 has modified hall s euler equation to allow for substitutability between government spending and private consumption and found that the two are substitutes for the u s karras 1994 however using a similar approach and data for 30 countries concludes that private and government consumption are better described as complementary or unrelated liquidity constraints and substitutability have been combined in studies by graham and himarios 1991 cushing 1992 and graham 1993 using u s data and by evans and karras 1996 for a number of countries a crucial limitation of most of these studies is the use of aggregate government consumption data which counterintuitively imposes a common substitutability parameter on all components of government spending 2 using recently available time series data for a large number of countries the present paper relaxes this restriction by decomposing government consumption into military and non military components enabling us to separately identify their relationship to private consumption the allocation of government consumption between military and non military functions has varied greatly across countries the appendix reports the average size of military and non military government shares in gdp as well as the military non military ratio by country over the 1970 1989 period average military expenditure as a fraction of gdp for example has ranged in our sample from 0 11 in mexico to 12 30 in jordan similarly the fraction of government consumption absorbed by military expenditure has ranged from 1 09 in mauritius to 66 82 in poland this sizable variability is promising in terms of cross sectional identification power but it also suggests that the estimated parameters must not be assumed to be common across countries the estimated model is derived in section ii which combines liquidity constraints and substitutability by nesting the approaches of hayashi 1982 and aschauer 1985 in the same section we discuss data sources and the estimation strategy which permits the estimated parameters to vary by country in a way that helps determine how they are influenced by country specific factors section iii estimates the model for a panel of the 66 countries for which annual data on all series are available for the 1970 1989 period the paper s main conclusions are given in section iv ii methodology and data we assume that consumers in economy i at time t derive utility from effective consumption c sup which we define as 1 mathematical expression omitted where c is private consumption g sup m and g sup nm are the military and non military components of government consumption the parameters theta sup m and theta sup nm measure the degree of substitutability between c and g sup m and c and g sup nm respectively

does buffer stock saving explain the smoothness and excess sensitivity of consumption one of the lasting contributions to modernday consumer theory is the idea that consumption is determined by the expected value of lifetime resources or permanent income the modern day specification of this concept is typically presented as a special case of intertemporalchoice theory where felicity functions are quadratic labor income is stochastic there are no restrictions on borrowing consumers have infinite horizons and expectations are formed rationally we refer to this model as the permanentincome hypothesis pih although the pih has considerable intuitive appeal a series of influential papers published after its inception revealed two notable discrepancies between the model s predictions and aggregate data first the model predicts that consumption growth should be more volatile than income growth if aggregate income growth has positive serial correlation as the quarterly data suggest it does yet aggregate consumption growth is in fact much smoother than aggregate income growth angus deaton 1987 john y campbell and deaton 1989 jordi gali 1991 second the pih predicts that consumption changes should be orthogonal to predictable or lagged income changes yet the coffelation between consumption growth and lagged income growth has been found to be one of the most robust features of aggregate data for example marjorie a flavin 1981 alan s blinder and deaton 1985 campbell and n gregory mankiw 1989 orazio p attanasio and guglielmo weber 1993 thus aggregate consumption growth has been described as exhibiting two puzzles it is both excessively smooth relative to current labor income growth and excessively sensitive to lagged labor income growth 2 in response to these and other empirical anomalies researchers have recently sought out modifications of the pih framework chief ludvigson federal reserve bank of new york 33 liberty street new york ny 10045 michaelides university of cyprus p o box 20537 1678 nicosia cyprus a previous version of this paper appeared under the title can we explain the consumption excesses yet aggregate consumption implications of buffer stock saving behavior for many helpful comments we thank orazio attanasio dave backus ben bernanke john y campbell christopher carroll todd clark angus deaton pierreolivier gourinchas bo honore james kahn martin lettau costas meghir christina paxson steve pischke andrew samwick christopher sims mark watson guglielmo weber michael woodford steve zeldes and two anonymous referees conference participants at the national bureau of economic research summer workshop on the aggregate implications of microeconomic consumption behavior july 1998 the tmr workshop on saving and pensions center tilburg university march 1999 and the new york area macroeconomics workshop october 1998 seminar participants at columbia university insead the new york federal reserve university college london london business school city university business school university of cyprus tel aviv university and jeffrey brown for excellent research assistance the views expressed are those of the authors and do not necessarily reflect those of the federal reserve bank of new york or the federal reserve system any errors or omissions are the responsibility of the authors 1 note that the important insight of danny quah 1990 that individuals may be better able than econometricians to distinguish short run from long run innovations to their income cannot resolve the excess smoothness puzzle laid out in campbell and deaton 1989 these authors show that in the context of the pih excess sensitivity and excess smoothness are the same phenomena in addition campbell 1987 demonstrates that superior information of the type emphasized by quah will show up in households saving behavior and using this information allows the econometrician to control for the agent s private information when predicting income since excess sensitivity is well established and controlling for saving does not eliminate it see campbell and deaton 1989 the observed smoothness of consumption cannot be explained by superior information on the part of permanent income consumers see deaton 1992 for further discussion 2 philippe bacchetta and stefan gerlach 1997 and ludvigson 1999 document another kind of excess sensitivity the correlation between consumption growth and predictable changes in consumer credit although we do not explore these findings here ludvigson finds that a bufferstock model with time varying liquidity constraints can replicate such a correlation

information technology consultancy firms economies of agglomeration from a wide area perspective agglomeration economies remains a powerful concept in spatial analysis however in order to keep its full relevance for contemporary urban and regional systems it must be completed in two ways

competition and collusion in the american automobile industry the 1955 price war movements in total quantity and in quality adjusted price suggest a supply side shock in the american automobile market in 1955 this paper tests the hypothesis that the shock was a transitory change in industry conduct a price war the key ingredients of the test are alternative equilibrium models of oligopoly under product differentiation in nonnested cox tests of hypotheses a collusive solution is sustained in 1954 and in 1956 while a competitive solution holds in 1955 the result does not appear to be an artifact since it is robust in tests against alternative specifications copyright 1987 by blackwell publishing ltd

trend breaks long run restrictions and contractionary technology improvements abstract structural vector autoregressions with long run restrictions are extraordinarily sensitive to low frequency correlations recent literature finds that the estimated effects of technology shocks are sensitive to how one treats hours per capita however after allowing for statistically and economically significant trend breaks in productivity results are much less sensitive hours fall when technology improves the issue is that the common high low high pattern of productivity growth and hours i e the low frequency correlation inevitably leads to a positive estimated response the trend breaks control for this correlation this example suggests a practical need for care in using long run restrictions

the water utility adoption model wuam understanding influences of organisational and procedural innovation in a uk water utility for uk water and sewerage companies wascs the capacity to innovate capital investment processes and consequently performance outcomes is fundamental as they seek to deliberately change infrastructure to improve the sustainability of service delivery within a comparatively regulated framework innovation is viewed here as being either incremental or radical changes to the products services and processes ways of delivering services which are typical to the organisation wascs product and process innovations may involve changes to some or all of technologies organisational structure and processes behaviour and culture and knowledge and skills within the organisation and its supply chain this paper sets out to provide an understanding of the factors which both enable and constrain the development and adoption of infrastructure investment process innovations in the context of water utilities concerned with water and sewerage service delivery the paper documents the process and results from an inductive research programme of participatory action research undertaken within a large privately owned uk wasc to facilitate infrastructure investment process innovation employee narratives during the innovation process from initiation to adoption decision making were characterised and analysed the findings suggest that the development and adoption of asset investment process innovations tends to be skewed in favour of opportunities which align with i uk and european union legislative and regulatory drivers ii wasc mission policy and goals iii innovation cost advantages over a prescribed period of time iv perceived risks to service provision associated with the introduction of the innovation and v the extent to which the organisational processes and cultures which act to increase the absorptive capacity of the wasc to the proposed innovation are already functioning

time should tell more evolutionary economic geography and the challenge of history abstractevolutionary economic geography theory stresses the importance of time and history to explain the evolution of regional economies yet consistent empirical treatment of longitudinal patter

predation reputation and entry deterrence abstract economists often argue that predatory practices are irrational since there exist cheaper or more certain means to gain or maintain a monopoly our gametheoretic equilibrium analysis suggests that if a firm is threatened by several potential entrants then predation may be rational against early entrants even if it is costly when viewed in isolation because it yields a reputation which deters other entrants asymmetric information plays a crucial role in our analysis since it provides the rationale for entrants to base their expectations of the firm s future behavior on its past actions the analysis also suggests methods to treat general reputational phenomena

the coming regional crisis and how to avoid it the analysis of regional development and the formation of development policies is currently excessively influenced by the assumption that globalization represents the overriding causal influence and policy imperative this bias seems to derive from insufficiently critical borrowings from the management literature and the emergence of a stratum of economic development actors concerned primarily with regional competitiveness the article suggests that the objectivity of analysis and the economic rationality of policy making can be improved by paying more attention to localized activities to regional economic welfare and to the impact of regionalization on macroeconomic policy making

introduction epistemic communities and international policy coordination the growing technical uncertainties and complexities of problems of global concern have made international policy coordination not only increasingly necessary but also increasingly difficult if decision makers are unfamiliar with the technical aspects of a specific problem how do they define state interests and develop viable solutions what factors shape their behavior under conditions of uncertainty what are the origins of international institutions and how can we best study the processes through which international policy coordination and order emerge while a variety of analytic approaches have been used to address the problems of international cooperation the approaches have yielded only fragmentary insights at its core the study of policy coordination among states involves arguments about determinism versus free will and about the ways in which the international system is maintained and transformed among the overlapping topics of debate are whether national behavior is determined or broadly conditioned by system level factors unit level factors or some complex interplay between the two whether state policymakers can identify national interests and behave independently of pressures from the social groups they nominally represent and whether states respond consistently to opportunities to create defend or expand their own wealth and power to enhance collective material benefits or to promote nonmaterial values a related question of

mnes as border crossing multi location enterprises the role of discontinuities in geographic space spurred by the classic work of dunning mne location has become the focus of a growing body of research in the field in this paper we argue that international business ib research examining the spatial dimension has serious weaknesses stemming from its traditional assumption of the country as the location unit of analysis while border crossing remains the key research context of ib placing it within a general spatial framework that recognizes both international and subnational spatial heterogeneity opens up vast new vistas for research analyzing mnes as border crossing multi location enterprises allows the researcher to distinguish between discrete border effects and continuous distance effects and undertake a more fine grained analysis of location within such analysis national borders may appear as qualitative discontinuities in space that is points at which spatial heterogeneity changes abruptly however subnational spatial heterogeneity is often the characteristic that drives firm strategy as mnes decide to locate in particular agglomerations and not at random locations within a country the complex firms that ib scholars study typically include multiple units within the same country so that a complete analysis requires considering both subnational distance effects as well as international border effects

the response of hours to a technology shock a two step structural var approach the response of hours to a technology shock is a controversial issue in macroeconomics part of the difficulty lies in that the estimated response is sensitive to the specification of hours in structural vector autoregressions svars this paper uses a simple two step approach to consistently estimate the response of hours the first step considers a svar model with a relevant stationary variable but excluding hours given a consistent estimate of technology shocks in the first step the response of hours to this shock is estimated in a second step simulation experiments from an estimated dynamic stochastic general equilibrium dsge model show that this approach outperforms standard svars when applied to u s data the two step approach predicts a short run decrease followed by a hump shaped positive response this result is robust to other specifications and data

welfare effects of entry into markets with switching costs in many markets consumers have costs of switching between products that are functionally identical this note shows that entry of efficient low cost competitors into these markets may be socially detrimental in a linear model entry reduces social welfare as conventionally defined in more than half of the relevant parameter space in a more general model there is always a range of values of switching costs for which entry reduces welfare even if the entrant s production costs are lower than the incumbent s copyright 1988 by blackwell publishing ltd

individual income incomplete information and aggregate consumption individual income is much more variable than aggregate per capita income i argue that aggregate information is therefore not very important for individual consumption decisions and study models of life cycle consumption in which individuals react optimally to their own income process but have incomplete or no information on economy wide variables since individual income is less persistent than aggregate income consumers will react too little to aggregate income variation aggregate consumption will be excessively smooth since aggregate information is slowly incorporated into consumption aggregate consumption will be autocorrelated and correlated with lagged income on the other hand the model has the same prediction for micro data as the standard permanent income model the second part of the paper provides empirical evidence on individual and aggregate income processes different models for individual income are fit to quarterly data from the survey of income and program participation making various adjustments for measurement error calibrating the consumption model using the estimated parameters for the income process yields predictions which qualitatively correspond to the empirical findings for aggregate consumption but do not match them well in magnitude

innovation in space the mosaic of regional innovation patterns this article casts light on the increasingly complex geography of innovation and knowledge sourcing activities we argue that the spatial patterns of learning and knowledge exchange vary substantially across different types of regions and industries the article elucidates such variations by combining three analytical approaches namely i modes of innovation differentiating between science technology innovation sti and doing using interacting dui modes ii regional innovation systems distinguishing between organizationally thick and diversified thick and specialized and thin systems and iii types of knowledge linkages that connect actors during the innovation process we explore in detail the key characteristics of the spatial architectures of innovation and knowledge flows in sti and dui industries located in regional innovation systems with varying degrees of organizational thickness and specialization we also discuss empirical examples documented in the extant literature to illustrate our arguments on how innovation and knowledge circulation unfold in space in various territorial and industrial contexts

proximity dynamics social networks and innovation there is a growing literature dealing with the role of geographical proximity in the innovation process storper and venables 2004 moodysson and jonsson 2007 knoben and oerlemans 2006 fitjar

a signal jamming theory of predation we propose a new theory ofpredation based on signal jamming in our model the predator s characteristics are common knowledge while the entrant is uncertain of his own future profitability the entrant uses his current profit to decide whether to remain in the market and the predator preys to jam or interfere with this inference problem thus our model differs from those based on reputation effects in which the predator preys to signal information about himself

institutional conditions and innovation systems on the impact of regional policy on firms in different sectors moodysson j and zukauskaite e institutional conditions and innovation systems on the impact of regional policy on firms in different sectors regional studies this paper deals with institutional conditions in regional innovation systems how institutions affect the organization of innovation activities among firms and in what ways regional policy initiatives can be supportive the analysis draws on data on innovation networks activities and regional policies targeting the life science media and food industries in scania sweden the study takes account of the ways in which regional policies can impact individuals and organizations action in relation to each other by being internalized it is argued that such ability is decisive for the success or failure of the policy initiative

consumption and credit constraints international evidence abstract if some consumers are liquidity constrained aggregate consumption should be excessively sensitive to credit conditions as well as to income moreover the excess sensitivity may vary over time using data for the united states canada the united kingdom japan and france we find a substantial impact of credit aggregates on consumption in all countries considered moreover the borrowing lending wedge is a significant determinant of consumption in the united states canada and japan using extended kalman filtering techniques we show that the excess sensitivity varies over time with a clear tendency to decline in the united states

do clusters make a difference defining and assessing their economic performance spencer g m vinodrai t gertler m s and wolfe d a do clusters make a difference defining and assessing their economic performance regional studies this paper contributes to the literature on cluster dynamics by developing a new methodology for identifying clusters that is not dependent on united states based definitions this methodology is used to test if the geographical clustering of economic activities leads to superior industrial performance and regional competitiveness the analysis produces two important findings first when industries locate in an urban region with a critical mass of related industries they tend to generate both higher incomes and rates of employment growth second the overall prevalence of clustering within a city region is positively associated with income levels and employment growth spencer g m vinodrai t gertler m s et wolfe d a les grappes qu est ce qu elles changent definir et evaluer leur performance economique regional studies cet article cherc

a quick and easy method for estimating switching costs abstract i develop and test a method for a quick and easy calculation of consumer switching costs among brands in a given industry the theory developed and tested here maps observed brands prices and market shares onto the switching costs which deter a consumer of a specific brand from switching to any other competing brand then i demonstrate how users switching costs can be directly calculated in two different industries a the israeli cellular phone market and b the finnish market for bank deposits this calculation method can be used to calculate switching costs in a wide variety of other industries such as airlines health services computers software telecommunications and more

the dynamics of innovation from national systems and mode 2 to a triple helix of university industry government relations abstract the triple helix of university industry government relations is compared with alternative models for explaining the current research system in its social contexts communications and negotiations between institutional partners generate an overlay that increasingly reorganizes the underlying arrangements the institutional layer can be considered as the retention mechanism of a developing system for example the national organization of the system of innovation has historically been important in determining competition reorganizations across industrial sectors and nation states however are induced by new technologies biotechnology ict the consequent transformations can be analyzed in terms of neo evolutionary mechanisms university research may function increasingly as a locus in the laboratory of such knowledge intensive network transitions

innovation dynamics of global competitive regional clusters the case of the norwegian centres of expertise isaksen a innovation dynamics of global competitive regional clusters the case of the norwegian centres of expertise regional studies this paper analyses the innovation dynamics in six regional clusters that have been appointed as norwegian centres of expertise and have been assessed as some of the most internationally competitive regional clusters in norway the most consistent finding concerns the great importance of strong norwegian innovation systems in the maritime and oil and gas industries in underpinning the innovation dynamism of these clusters this finding has some theoretical implications because the national level is mainly absent in the discourse on local buzz knowledge spillovers inside the cluster boundaries and global pipelines international relations and knowledge flows what remains as an important local factor is the historically developed unique competence of firms which is strengthened by the fact that locally sited state owned higher education and research institutions ha

varieties of regulation how to combine sectoral regional and national levels schroder m and voelzkow h varieties of regulation how to combine sectoral regional and national levels regional studies research on economic governance is contradictory varieties of capitalism scholars argue for national differences between liberal and coordinated market economies others argue that economic sectors come with distinct modes of governance a third research strand explains the economic governance of companies through the regional system of innovation and production in which they are embedded problematically this current state leaves the question open about how national sectoral and regional economic governance interact using case studies from three research projects this paper shows how the national sectoral and regional level of economic governance can be combined by advancing the argument that incoherent institutions can be complementary

switching costs in the wholesale distribution of cigarettes recent theories of price wars triggered by entry assign a critical role to switching costs in explaining price and output changes earlier elzinga and mills 1998 showed that actual switching patterns following an episode of new entry in an industry are driven by the fact that buyers have different switching costs the current paper draws on transaction specific price and shipments data surrounding the 1984 1985 price war in generic cigarettes to explore the size and determinants of switching costs among wholesale cigarette distributors results show that switching costs vary across firms and are nontrivial in magnitude several implications of the findings are discussed

the permanent income hypothesis and consumption durability analysis based on japanese panel data the permanent income hypothesis with durability of commodities is tested on a panel of about 2 000 japanese households for several commodity groups under static expectations about real interest rates and for some class of utility functions consumption which is a distributed lag function of current and past expenditure follows a martingale main empirical results are i the durability of commodities usually classified as services is substantial ii the hypothesis applies to about 85 percent of the population consisting of wage earners and iii income changes explain only a small fraction of the movements in expenditure

multinational companies technology spillovers and plant survival how does the presence of multinational companies affect plant survival in the host country we postulate that multinational companies can impact positively on plant survival through technology spillovers we examine the nature of the effect of multinationals using a cox proportional hazard model which we estimate using plant level data for irish manufacturing industries our results show that the presence of multinationals has a life enhancing effect only on indigenous plants in high tech industries suggesting the presence of technology spillovers in contrast multinationals compete with each other in low tech sectors in the host country

innovation and industrial districts a first approach to the measurement and determinants of the i district effect boix r and galletto v innovation and industrial districts a first approach to the measurement and determinants of the i district effect regional studies the paper analyses an exhaustive database of patents granted in spain between 2001 and 2006 aggregated in a panel of 806 local labour markets classified by seven typologies of local production systems the analysis shows that marshallian industrial districts generate 30 of spanish patents and an innovative output per capita that is 47 above the national average and 31 larger than the manufacturing production systems of large firms the econometric estimates of a fixed effects model confirm the existence of an innovation district i district effect and its size the i district effect is mainly related to the presence of marshallian localization economies boix r et galletto v innovation et districts industriels une premiere approche de la mesure et des determinants des effets des districts d innovation regional studies nous analysons une base

technology shocks and the labor input response evidence from firm level data we study the relationship between technology shocks and labor input on swedish firm level data using a production function approach to identify technology shocks taking standard steps yields a contractionary contemporaneous labor input response in tine with previous studies this finding may however be driven by measurement errors in the labor input variable relying on a unique feature of our data set which contains two independently measured firm specific labor input measures we can evaluate the potential bias we do not find that this bias conceals any true positive contemporaneous effect the results thus point away from standard flexible price models and toward models emphasizing firm level rigidities