technology adoption under production uncertainty theory and application to irrigation technology we propose a theoretical framework to analyze the conditions under which a farmer facing production uncertainty due to a possible water shortage and incomplete information will adopt a more efficient irrigation technology a reduced form of this model is empirically estimated using a sample of 265 farms located in crete greece the empirical results suggest that farmers choose to adopt the new technology in order to hedge against production risk in addition we show that the farmer s human capital also plays a significant role in the decision to adopt modern more efficient irrigation equipment

unemployment risk and precautionary wealth evidence from households balance sheets this paper examines precautionary behavior by relating job loss risk to household net worth we use existing best practice and some new strategies to deal with some problematic issues inherent in this literature regarding proxying uncertainty instrumentation and incorporating theoretical restrictions we do not find precautionary variation in the wealth holdings of households with low permanent income but do find precautionary effects for moderate and higher income households when the dependent variable is total net worth these findings are robust to several alternative specifications but we do not find precautionary responses in subaggregates of wealth that exclude home equity

marshall s versus jacobs externalities in firm innovation performance the case of french industry galliano d magrini m b and triboulet p marshall s versus jacobs externalities in firm innovation performance the case of french industry regional studies this paper analyses the influence of different types of spatial externalities related to the location of firms on their innovation performance and how those externalities combine in the territories with regard to the marshall jacobs dichotomy the originality of this study also lies in the consideration of a larger definition of the firm one that takes into account the location of all its units based on a dataset of french industrial firms and specific indicators to evaluate the specialization and or diversification of the employment zones the impacts of the spatial profile of the firm on its innovation performance are tested

precautionary wealth accumulation evidence from canadian microdata this paper estimates the effect of labour income uncertainty on wealth accumulation using two data sources wealth information is obtained from the master files of the new canadian survey of financial security 1999 sfs labour income risk proxies are constucted by industry using the canadian survey of labour and income dynamics slid between 1996 and 2001 the empirical results suggest the presence of a strong precautionary saving motive among canadian households for broad definitions of wealth furthermore consistent with the buffer stock saving model the level of precautionary funds significantly increases when households face liquidity constraints ce texte calcule l effet de l incertitude du revenu de travail sur l accumulation de la richesse a l aide de deux sources de donnees les donnees sur la richesse sont tirees des resultats de l enquete sur la securite financiere esf de 1999 les coefficients de risque attaches aux diverses industries sont developpes a partir des resultats de l enquete sur la dynamique du travail et du revenu edtr entre 1996 et 2001 les resultats empiriques suggerent la presence d une forte motivation des menages canadiens aepargner aux fins de precaution si l on accepte des definitions assez comprehensives de la richesse de plus d une maniere qui correspond au modele d epargne pour stockage tampon le niveau des fonds aux fins de precaution s accroit de maniere significative a proportion que les menages font face a des contraintes de liquidite

sales practice and market evolution the case of virtual reality abstract this paper analyses how sales practices of industry pioneers influence the evolution of a new market with particular reference to the case of virtual reality vr in the underlying diffusion process the probability of a new user adopting this technology depends on the quality of experience enjoyed by existing users good sales practice is expensive but leads to a high proportion of satisfied users which is good for subsequent diffusion while suppliers may be tempted to hype up the technology to obtain additional sales in the short term those customers persuaded by hype are often dissatisfied with their experiences and that is bad for diffusion in the longer term the paper draws on a detailed study of the selling process in vr to develop a simulation model which is used to explore how sales practice influences adoption decisions customer satisfaction and the ultimate evolution of the market

medical expenditure risk and household portfolio choice medical expenses are an increasingly important contributor to household financial risk we examine the effect of medical expenditure risk on the willingness of medicare beneficiaries to hold risky assets using a discrete factor maximum likelihood method to address the endogeneity of insurance choices we find that having a moderately protective medigap or employer supplemental policy increases risky asset holding by 7 1 percentage points relative to those without supplemental coverage while participation in a highly protective medicare hmo increases risky asset holding by 13 0 percentage points our results highlight an important link between the availability of health insurance and financial behavior

barriers and drivers in the adoption of advanced wastewater treatment technologies a comparative analysis of italian utilities abstract the adoption of new environmentally friendly technologies is becoming a key issue in both public debate and policy arenas the paper focuses on innovation adoption by wastewater utilities and investigates why stringent environmental regulations are not sufficient to foster it the adoption of advanced wastewater treatment technologies is made complex by the sunk nature of highly specific infrastructures and the consequent exposure of utilities to political and institutional influences in addition it requires the involvement of various actors utilities suppliers contractors and is influenced by various stakeholders communities business users citizens associations that generally have no aligned objectives with reference to the aforementioned theoretical background our paper develops and analyzes a conceptual framework that unfolds over two dimensions a the role played by firm specific characteristics i e technological and organizational capabilities and managerial professionalism b the influence of community level factors i e citizens voice and pressure exerted by local stakeholders we investigate these issues through multiple descriptive case studies based on semi structured interviews with the ceos and top managers of 11 wastewater utilities operating in a region in north italy the results suggest that firm specific resources could spur wastewater utilities into adopting innovation despite an adverse institutional environment at the same time on the community level side the analysis shows that residents and local businesses are able to mobilize resources and exert pressure to either drive or hinder the adoption of water innovations

the energy efficiency paradox revisited through a partial observability approach the present paper examines the energy efficiency paradox demonstrated in greek manufacturing firms through a partial observability approach the data set used has resulted from a survey carried out among 161 energy saving technology firm adopters maximum likelihood estimates that arise from an incidental truncation model reveal that the adoption of the energy saving technologies is indeed strongly correlated to the returns of assets that are required in order to undertake the corresponding investments the source of the energy efficiency paradox lies within a wide range of factors policy schemes that aim to increase the adoption rate of energy saving technologies within the field of manufacturing are significantly affected by differences in the size of firms finally mixed policies seem to be more effective than policies that are only capital subsidy or regulation oriented

to love or to pay savings and health care in older age this paper develops a dynamic structural lifecycle model to study how heterogeneous health and medical spending shocks affect the savings behavior of the elderly individuals are allowed to respond to health shocks in two ways they can directly pay for their health care expenses self insure or they can rely on health insurance contracts there are two possible insurance options one through formal contracts and another through informal care provided by family formal contracts may be affected by asymmetric information problems whereas informal insurance depends on social ties cohesion and on bequeathable wealth i estimate the model on share data using simulated method of moments for four levels of wealth in a sample of single retired europeans counterfactual experiments show that health medical spending and health insurance are indeed the main drivers of the slow wealth decumulation in old age i also find that social cohesion rises with age declines with wealth and is higher in mediterranean countries than in central european and scandinavian countries finally high social cohesion appears typically associated with increased life expectancy

layoffs and litigation we study a possible link between two recent u s labor market trends increased wrongful termination litigation and more frequent mass layoffs we argue that if workers are more likely to sue when fired than when dismissed as part of a layoff then increases in the expected costs to firms of such suits should induce substitution toward layoffs and away from individual firings our empirical analysis supports this assertion showing that shortly after the passage of the civil rights act of 1991 the methods of displacement changed differently by race but changes to the overall level of displacement were consistent across races

estimating level effects in diffusion of a new technology barcode scanning at the checkout counter cross country or cross industry studies of technology diffusion typically estimate how independent factors affect diffusion speed or timing often based on a two stage approach in many applications however countries industries differ most in the saturation level of diffusion in a single stage econometric approach to a standard diffusion model we therefore estimate how the saturation level covaries with independent factors in our application to diffusion of an important retail information technology we focus on the competitive effect of hypermarkets superstores we also find standard scale income and labour substitution effects

the innovation potential of new infrastructure development an empirical study of heathrow airport s t5 project abstract we propose a conceptual framework to analyze technology adoption in mega infrastructure projects and assess their potential to innovating large socio technical systems drawing on an in depth empirical analysis of heathrow airport s terminal 5 project we find that innovation hinges on technology adoption decisions that are governed systematically by two intertwined determinants assessment of expected profitability and development of absorptive capacity both of which are distributed across various interdependent actors on an ad hoc basis technological decisions are also affected by other factors namely attitudes toward risk politics and lack of established standards we reveal how a schedule driven project framing creates an underlying boundary condition that constrains the longitudinal process of building a whole collective with capacity to absorb new technologies the innovation potential of mega projects is thus subjected to a fundamental unifying tension on the one hand they offer a one off opportunity to invest in cutting edge technologies and innovate socio technical systems on the other hand project stakeholders have limited time to develop capacity to absorb novel technologies and negotiate differences on assessments of profitability and risk stakeholders may therefore be compelled to agree to adopt proven technologies upfront to reduce uncertainty and mitigate risks thus limiting the innovation potential of new infrastructure development

technology invention and diffusion in residential energy consumption a stochastic frontier approach traditional large appliances absorb a large share of residential electricity consumption and represent important targets of energy policy strategies aimed at achieving energy security despite being characterized by rather mature technologies this group of appliances still offers large potential in terms of efficiency gains due to their pervasive diffusion in this paper we analyse the electricity consumption of a set of four traditional white goods in a panel of ten eu countries observed over 21 years 1990 2010 with the aim of disentangling the amount of technical efficiency from the overall energy saving the technical efficiency trend is modelled through a set of technology components representing both the invention and adoption process by the means of specific patents weighted by production and bilateral import flows which allows to overcome the rigid stochastic frontier framework in modelling the effect of technical change our results show that the derived energy demand and inefficiency trends are both related to changes in the amount of available technology embodied in energy efficient appliances the effect is significant both in its domestic and international components and suggests an active role of innovation and trade policies for achieving efficiency targets which directly impact the amount of electricity consumed by households

unemployment insurance and precautionary saving abstract models of precautionary saving imply that households will hold more assets when faced with greater income uncertainty however previous empirical studies of income uncertainty have produced somewhat mixed support for the precautionary saving hypothesis in this paper we note that differences in the state contingent income stream available to workers through the unemployment insurance ui program provides an excellent source of variation for testing the presence of a precautionary savings motive simulations of a stochastic life cycle model suggest that a ui system similar to the type currently in place in the u s can lead to a significant reduction in the assets accumulated by a median worker moreover there is considerable variation in the ui benefit schedules for workers living in different states in the u s which provides an exogenous source of variation for empirically testing the precautionary saving hypothesis we carry out this test using data on expected ui benefit replacement rates and financial assets held by households in the survey of income and program participation our empirical results are consistent with the predictions of the model and suggest that reducing the ui benefit replacement rate by 50 percent would increase gross financial asset holdings by 14 percent or 241 for the average worker we also find empirical evidence that this crowd out effect of ui on household saving is stronger for those facing higher unemployment risk and weaker for older workers both of which are implications from our precautionary saving model

estimating the innovator s dilemma structural analysis of creative destruction in the hard disk drive industry 1981 1998 this paper studies strategic industry dynamics of creative destruction in which firms and technologies experience turnover theories predict that cannibalization between existing and new products delays incumbents innovation whereas preemptive motives accelerate it incumbents cost dis advantage relative to that of entrants would further reinforce these tendencies to empirically assess these three forces i estimate a dynamic oligopoly model using a unique panel data set of hard disk drive manufacturers the results suggest that despite strong preemptive motives and a substantial cost advantage over entrants cannibalization makes incumbents reluctant to innovate which can explain at least 57 percent of the incumbent entrant innovation gap

the timing of antitrust effects on pricing this paper extends recent results suggesting a deterrent effect of antitrust cases on price cost margins of firms involved in a sample of 288 firms a negative effect of price fixing indictments on margins is found an effect which erodes over time some weak support is given for the view that a deterrent effect is reduced if a conviction is not obtained finally an attempt to examine the response of firms to stages of a case suggests that the bulk of the antitrust effect on pricing may occur at the onset of investigation prior to actual filing of the case

complementarities in organizational design and the diffusion of information technologies an empirical analysis we use a specially designed survey on french firms located in haute savoie to provide empirical evidence suggesting that information and communication technologies adoption is not only influenced by the traditional factors of technology diffusion but also by complementarity effects between strategies organization and information technologies the data collected permitted several advances firstly we could study authentic ict while the recent literature has mainly focused on computer capital stocks or automation tools secondly we constructed measures of the determinants put forward by the models of technology diffusion thirdly we studied three kinds of practices organizational and strategic practices technological choices

the problem of global environmental protection what distinguishes global common property problems and global unidirectional externalities from the ones that arise under a single jurisdiction is that there is no global authority empowered to intervene and regulate use of global environmental resources cooperation is needed the paper discusses when cooperation is most needed and how it might be obtained cooperation might emerge from a noncooperative setting if supergames are played if the actions of any one country are explicitly contingent on the actions undertaken by other countries or if moral concerns lead countries to consider the consequences of their actions for others cooperation emerges in an explicit though limited form when countries commit to regulate themselves in signing international agreements in these cases the signatories cooperate but the agreements are self enforcing an attempt is made to relate these theoretical concepts to the practice of global environmental protection copyright 1990 by oxford university press

innovations and the economics of new technology spreading within and across users gaps and way forward r d subsidies are often considered the main policy tool to stimulate the competitiveness and the innovativeness of firms this is especially true for innovations designed to produce greener products or cleaner and more energy efficient technologies however a consistent literature has now shown that even when a clean or a cost reducing technology is ready available in the market its spreading within intra or across inter households or firms takes several years and in some cases decades therefore it is not only important to generate innovations via investments in r d but it is also important that such innovations are adopted and used by firms this paper briefly illustrates the main theoretical approaches to the analysis of the factors leading to inter firm diffusion and emphasise the existing gap led by the paucity of literature on intra firm diffusion a final section briefly discusses some methodological issues surrounding the diffusion of consumer non durable technologies within and across households and how ad hoc models can be used to test the validity of environmental policies

health insurance and retirement of married couples summary most health insurance in the usa is provided by employers until eligibility for public health insurance medicare begins at age 65 retiring before 65 exposes workers who lack retiree health insurance coverage to the risk of catastrophic medical expenditure we solve and estimate a dynamic model of the employment behavior of older married couples that includes risky medical expenditure and health insurance parameter estimates imply that the risk reducing feature of health insurance can account for about half of the observed association between retiree health insurance and employment for married men but can account for only one tenth of the much larger observed association for married women policy simulations imply very small effects on employment of changing the age of eligibility for medicare from 65 to 67 copyright 2006 john wiley sons ltd

environmental protection and the private provision of international public goods final version received 11 september 2008 international environmental protection like the combat of global warming exhibits properties of publicgoods in the international arena no coercive authority exists that can enforce measures to overcome free rider incentives therefore decentralized negotiations between individual regions serve as an approach topursue ef cient international environmental protection we propose a scheme which is based on the ideasof coasean negotiations and pigouvian taxes the negotiating entities offer side payments to counterpartsin order to in uence their taxation of polluting consumption side payments in turn are self nanced bymeans of externality correcting taxes as we show a pareto ef cient outcome can be attained

technology diffusion and international income convergence abstract a macroeconomic model of international income convergence driven by differences in technology is presented ldc firms adopt foreign technology by paying an upfront cost of adaptation and early adopters create a positive externality for followers in equilibrium adoption is gradual and so is income convergence because of the externality small differences in adoption costs across ldcs can lead to large differences in long run income during convergence the ldc economy is dualistic with large high technology firms operating alongside small traditional establishments the effects of trade policy and direct foreign investment are also examined

cartels and antitrust the role of fines in deterring violations at the margin the potential benefits of effective antitrust action include both increased economic efficiency through the expansion of output and improved equity through the redistribution of income from monopolies to consumers a large and growing literature is devoted to empirically testing and documenting the economic consequences of antitrust casebringing activity a second empirical literature is focused on the role which economic variables play in the determination of casebringing activity by the united states department of justice 2 what separates these two bodies of literature are the behavioral linkages between anti

demographic influences on willingness to pay for cold tolerance technology new technologies in agriculture have the potential to increase production levels reduce risk and improve profits for farm operators however in order for this to take place the technologies must appeal to producers creating enough interest that they decide to invest in them gauging the level of interest in a technology and the types of producers who will be interested in trying it are important steps in technology development cereal crops such as wheat are important to agriculture in canada in terms of both acreage and revenue researchers in canada are currently attempting to develop more cold tolerant cereal crops to reduce the risk of frost damage and increase the area available to produce these crops a producer survey including questions on past adoption behavior attitudinal characteristics and demographics as well as a set of dichotomous choice questions on new varieties was conducted and analyzed using a regression and willingness to pay calculations demographics were the focus during these activities it was determined that producers from areas experiencing frost regularly with high incomes and large land bases had a higher propensity to adopt and higher willingness to pay for this technology

exploring links between innovation and diffusion adoption of nox control technologies at us coal fired power plants while many studies have looked at innovation and adoption of technologies separately the two processes are linked advances and expected advances in a single technology should affect both its adoption rate and the adoption of alternative technologies this paper combines plant level data on us coal fired electric power plants with patent data pertaining to nox pollution control techniques to study this link as in other studies of environmental technologies the effect of other explanatory variables is dominated by the effect of environmental regulations demonstrating that the mere presence of environmental technologies is not enough to encourage its usage nonetheless i do find that technological advances are important for the adoption of existing combustion modification technologies however these advances are less important for the adoption of newer post combustion control techniques which are adopted only when needed to comply with the strictest emission limits

the effects of the market structure on the adoption of evolving technologies abstract we study the speed at which technologies are adopted depending on how the market power is shared between the firms that sell technologies and the firms that buy them our results suggest that because of a double marginalization problem adoption is fastest when either sellers or buyers hold all the market power thus competition between sides of the market may delay the adoption of technologies

with a little help from my friends cross subsidy and installed base quality in the u s telecommunications industry abstract this article examines the effect of the cross subsidization process which is a key institutional mechanism in the telecommunications sector generally on enhancing the quality of the installed base of telecommunications infrastructure in the united states fiber optic and digital technology usage levels within local exchange carriers in the united states are used to capture installed base quality the results show that local exchange sector cross subsidization has a positive effect on new technology deployed in the installed base regulatory influences are also controlled for and the introduction of pure price cap schemes is shown to positively affect new technology quality where price cap schemes are introduced in conjunction with a mixed earnings sharing scheme or where only an earnings sharing scheme is introduced then the effect on new technology usage is much more mixed

the deterrent effect of antitrust enforcement in this paper we formulate and test a model of collusive pricing in the presence of antitrust enforcement we show that a cartel s optimal price is likely to be neither the competitive price nor the price that the cartel would set in the absence of antitrust enforcement but rather an intermediate price that depends on the levels of antitrust enforcement efforts and penalties our empirical results reveal that increasing antitrust enforcement in the presence of a credible threat of large damage awards has the deterrent effect of reducing mark ups in the bread industry

technology use and plant closure abstract this paper aims to contribute to the empirical literature on industrial demography it analyzes a stratified sample of the italian metalworking industry composed of 810 plants with more than 10 employees it considers plant closure over the period 1989 1997 probit type econometric models are estimated in order to provide evidence on the explanatory factors of the likelihood of closure with special attention being devoted to technological variables the paper extends previous empirical results along a number of directions first in spite of the fact that use of advanced technologies especially in the design and engineering sphere favors survival remarkable differences do emerge between different individual technologies ceteris paribus plants having adopted technologies characterized by sizable product specific investments turn out to be less likely to be shut down in addition the ownership status of plants is found to influence the probability of closure likelihood of survival is lower for plants that belong to multi unit organizations than for those owned by single plant firms even though the difference between the two plant categories decreases with plant size altogether such results point to the relevance of irreversibility and sunk costs for understanding exit behavior

rank stock order and epidemic effects in the diffusion of new process technologies an empirical model in this article we construct a general duration model of technology adoption that incorporates the main factors discussed in different theories of diffusion of new process technologies the model is applied to data on diffusion of cnc in the uk engineering industry although we find strong evidence in support of rank and endogenous learning effects there seems to be little evidence in support of the stock and order effects the main factors affecting the diffusion of cnc are found to be endogenous learning firm size industry growth rates the cost of the technology and expected changes in the cost of the technology

the intra firm diffusion of new process technologies the study of intra firm diffusion has largely been neglected and the limited extant literature overwhelmingly relies upon uncertainty reduction via information spreading or epidemic learning as the main driver in this paper an alternative approach is taken whereby the intra firm diffusion of new process technologies reflects the profitability of new technology adoption as proxied by firm characteristics the approach is tested using data relating to the diffusion of computer numerically controlled machine tools within firms in the uk engineering and metalworking sectors the empirical analysis does not reject the hypothesis that profitability considerations are important with a number of firm characteristics being isolated as of special relevance including firm size and the use of complementary technologies and managerial techniques however there is little support for the traditional epidemic effect

public insurance and private savings who is affected and by how much this paper employs a recently developed instrumental quantile regression method to investigate the effect of medicaid on household savings across different wealth groups it finds that the disincentive effect of medicaid on household savings is heavily concentrated in the middle net worth households in contrast the effects on the bottom and top net worth households are quite small and insignificant these heterogeneous incentive effects are partly explained by medicaid asset tests our findings hold regardless of whether affluence is measured in terms of wealth or income they suggest that despite generating substantial crowd out for the mean household medicaid expansions are unlikely to discourage the savings of the poorest households copyright 2008 john wiley sons ltd

complementarity and cumulative learning effects in early diffusion of multiple technologies this paper concentrates on the contextual diffusion of flexible automation production and design engineering technologies in the italian metalworking industry the authors use duration data analysis with explanatory covariates to point out the role of complementarities between the technologies examined and learning by using effects matured with experience of previously available technologies in shaping diffusion paths the impact of industry and plant specific control variables as well as that of the stock of previous adopters on adoption probabilities is also taken into account in addition the authors analyze duration versus calendar time dependence of adoption probabilities copyright 1995 by blackwell publishing ltd

affirmative action and labor markets affirmative action remains controversial the controversy extends from the original antidiscrimination legislation and its interpretation to estimates of affirmative action s effect on the labor market this paper provides a progress report on our recent efforts at detecting the effects of affirmative action on minority wages and employment although we find a substantial increase in wages for black men and black women over our sample period the timing of these wage changes is surprising most of the wage gains came prior to 1974 before the establishment of an effective monitoring structure for affirmative action indeed when the powers of the eeoc and ofcc are greatest the wage effects for young blacks are somewhat perverse using eeo 1 reports we find a major shift in black employment toward firms most vulnerable to the monitoring and potential sanctions of the affirmative action programs as with wages the shift in minority employment came prior to the expansion of the powers and budgets of the ee

induced discrimination and firm size information vs incentive effects this paper characterizes the differences in incentives to respond adversely to the civil rights act of 1991 cra91 across firm size i then empirically test the firm responses and compare them to the incentives i find that responses across firm size match the incentive differences thus firms appear to be rational as well as fully informed the most pronounced adverse response comes from large firms firms with more than 100 employees reversed a trend of increasing employment at a rate of 0 28 weeks worked per year prior to cra91 to a trend of decreasing employment at a rate of 0 21 weeks per year since this group employs 63 7 of the workforce this has a profound impact on opportunities for protected groups

altruism and global environmental taxes a global externality like the ghg emissions leading to climate change are both due to free riding at the individual level as well as the government level a government aiming to maximise domestic social welfare may make individuals internalise the damage within their country but will free ride on the damage caused to other countries only a global cooperative solution could internalise global damage entirely if individuals have altruistic concern for others but continue to believe that their consumption is negligible relative to the total they will not change their behaviour however this paper shows that in a multi country setting the global equilibrium levels of consumption for both the non cooperative and cooperative solutions are affected by altruism the key results are a that non cooperative governments maximising domestic welfare will internalise some of the damage inflicted on other countries depending on the level of altruistic concern individuals have and b the cooperative global optimum also changes as altruism leads individuals to effectively experience damage in other countries as well as the direct damage to them since altruistic concern for others may vary across countries global welfare then becomes a function of the relative levels of altruistic concern between countries

industrial policy and technology diffusion evidence from paper making machinery in indonesia summary in this paper we analyze the diffusion and adoption of paper making machinery in the indonesian pulp and paper industry from 1923 till 2000 we develop a machine level index of technological sophistication mach which measures the technological distance of each paper machine to the world technological frontier the data reveal a pattern of rapid technological catch up but catch up was not an industrywide phenomenon some modern firms installed state of the art machinery while others installed older vintages the paper argues that industrial policy has played an important role in the speed and nature of diffusion of paper making machinery

successful leadership in global public good provision incorporating behavioural approaches in the standard model of voluntary public good provision and other game theoretic models climate friendly leadership of a country is not successful a unilateral increase of this country s greenhouse gas abatement measures i e contributions to the global public good of climate protection will not lead to a positive reaction by the other countries but instead trigger a reduction of their abatement efforts and thus a crowding out effect in this paper it is shown how this undesired consequence need no longer occur when elements of behavioral economics are incorporated in the otherwise standard model of public good provision in particular strategic complementarities between the public good contribution of the leading country and those of the follower may result either if the follower has specific non egoistic or other regarding preferences or if the leader s contribution positively affects the follower s beliefs i e his conjectural variations about the leader s behaviour

interdependences in the intrafirm diffusion of technological innovations confronting the rational and social accounts of diffusion this article investigates the intrafirm diffusion of technological innovations and the interdependences that exist among rival firms in this process previous research has offered two potential explanations for these interdependences social accounts in which they result from institutional pressures and rational accounts in which firms are interdependent as a result of how adoption by rivals affects expectations about the profitability of the technology the article offers two contributions first we propose a competitive interaction mechanism that is consistent with the fundamentals of rational accounts of diffusion second the empirical analysis shows the dominance of the proposed rational mechanism over social accounts of innovation diffusion in the generation of interdependences in the process of intrafirm diffusion

racial discrimination and redlining in cities we propose a model where employers have two types of prejudices racial and spatial discriminations because of the rst one black workers have less chance than white workers to nd a job because of the second one workers living closer to the city center have less chances than suburban workers to nd a job in this context we show that depending on the importance of access costs to employment centers two urban equilibria may emerge in equilibrium 1 the access cost for blacks is quite large black and white workers are totally separated while in equilibrium 2 the access cost for blacks is relatively small workers are separated by their employment status the unemployed versus the employed we then study the labor market equilibrium and its interactions with the land market we show in particular that both race and space matter to explain high unemployment rates among blacks

is energy intensity important for the productivity growth of eet adopters abstract energy efficient technologies eet have attracted strong interest because of their role in reducing environmental damage their adoption however remains rather low while their impact on productivity is substantial and differentiating with respect to technological characteristics energy intensity being such an obvious characteristic could be employed to classify eet adopters thus giving rise to two heterogeneous technologies i e those corresponding to firms of low and high energy consumption hence this paper examines the impact of energy intensity on the productivity growth of firms adopting eet in varying time intervals through a metafrontier based framework while also decomposing that impact in terms of technical efficiency and scale efficiency changes the analysis is complemented by examining the role of firm specific characteristics on the productivity growth through linear regression

after kyoto alternative mechanisms to control global warming after more than a decade of negotiations and planning under the framework convention on climate change fccc the first binding international agreement to control the emissions of greenhouse gases has come into effect in the kyoto protocol the first budget period of 2008 2012 is at hand moreover the scientific evidence on greenhouse warming strengthens steadily as observational evidence of warming accumulates the institutional framework of the protocol has taken hold solidly in the european union s emissions trading scheme ets which covers almost half of europe s carbon dioxide emissions notwithstanding this apparent success the kyoto protocol is widely seen as somewhere between troubled and terminal early troubles came with the failure to include the major developing countries along with lack of an agreedupon mechanism to include new countries and extend the agreement to new periods the major blow came when the united states withdrew from the treaty in 2001 by 2002 the protocol covered only 30 percent of global emissions while the hard enforcement mechanism in the ets accounts for about 8 percent of global emissions even if the current protocol is extended models indicate that it will have little impact on global temperature change unless there is a dramatic breakthrough or a new design the protocol threatens to be seen as a monument to institutional overreach nations are now beginning to consider the structure of climate change policies for the period after 2008 to 2012 some countries states cities companies and even universities are adopting their own climate change policies are there in fact alternatives to the scheme of tradable emissions permits embodied in the protocol the fact is that alternative approaches have not had a serious hearing among natural scientists or among policymakers what are some alternatives for global public goods there are three potential approaches command and control regulation quantity oriented market approaches and taxor price based regimes of these only the tradable quantity and the price like regimes have any hope of being reasonably efficient under a tradable quantity approach an agreement proceeds by setting limits on emissions by different countries the limits are partially or wholly transferable among countries this is the approach taken under the kyoto protocol this approach has very limited international experience under existing protocols such as the cfc chlorofluorocarbon mechanisms and somewhat broader experience under national trading regimes such as the u s sulfur dioxide regime a radically different approach is to use harmonized prices fees or taxes as a method of coordinating policies among countries this approach has no international experience in the environmental area although it has modest experience nationally in such areas as the u s tax on ozone depleting chemicals on the other hand the use of harmonized price type measures has extensive international experience in fiscal and trade policies such as with the harmonization of taxes in the european union and harmonized tariffs in international trade these thoughts on the structure of international agreements to control global warming should not be regarded as negotiating strategies

strategic rigidity and foresight for technology adoption among electric utilities abstract the variation in the adoption of a technology as a major source of competitive advantage has been attributed to the wide ranging strategic foresight and the integrative capability of a firm these possible areas of competitive advantage can exist in the periphery of the firm s strategic vision and can get easily blurred as a result of rigidness and can permeate in the decision making process of the firm this article explores how electric utility firms with a renewable energy portfolio can become strategically rigid in terms of adoption of newer technologies the reluctance or delay in the adoption of new technology can be characterized as strategic rigidness brought upon as a result of a firm s core competence or core capability in the other more conventional technology arrangement this paper explores the implications of such rigidness on the performance of a firm and consequently on the energy eco system the paper substantiates the results by emphasizing the case of iberdrola s a an incumbent firm as a wind energy developer and its adoption decision behavior we illustrate that the very routines that create competitive advantage for firms in the electric utility industry are vulnerable as they might also develop as sources of competitive disadvantage when firms confront environmental change and uncertainty

strategic and deterrent pricing responses to antitrust investigations abstract this paper examines the issue of the effects of antitrust on pricing through two empirical studies the first analyzes time series of prices in five industries involved in antitrust cases to determine whether the various stages of the antitrust process influenced pricing behavior some evidence of a deterrent effect is found with real prices lower than their pre investigation level following the conclusion of the case a major part of the pricing reaction occurs prior to the filing of formal charges the second study provides additional evidence of the existence of such a strategic reaction to the onset of investigation through an examination of prices in 23 industries investigated but not charged with price fixing

promotion signaling discrimination and positive discrimination policies this article studies discrimination in a model in which promotions are used as signals of worker ability the model can account for statistical and taste based discrimination in the short run a positive discrimination policy is beneficial for workers in the middle of the ability distribution because these workers are promoted if and only if the policy is in place instead workers of either high or low ability suffer from the policy in the long run the policy benefits all targeted workers the model can explain empirical findings about the effects of a gender quota on the boards of norwegian companies

market segmentation and the diffusion of quality enhancing innovations the case of downhill skiing we report econometric results concerning the diffusion of detachable chairlifts in the united states that provide the first empirical evidence that the adoption of a technological innovation by a firm decreases the likelihood that a local competitor will also adopt it we model the effect that an innovation in service speed has on a f s incentive to differentiate the quality of its service from that of its competitors in our model the incentive to adopt is negatively related to the number of competitors who have already adopted our empirical results support this hypothesis

impact of health savings accounts on precautionary savings demand for health insurance and prevention effort the paper examines the influence of health savings accounts hsas on optimal savings insurance demand and prevention effort over the course of a lifetime this paper adds to the literature by investigating hsas as both a form of insurance and as saving vehicle in an expected utility framework assuming no regulatory constraints on the deductible we show that individuals voluntarily choose a positive deductible and increase their savings with hsas if the government imposed minimum deductible becomes too great however individuals may instead choose to remain in traditional insurance we determine the effect of hsas on prevention effort we find that an increased tax subsidy may worsen moral hazard issues assuming partial risk aversion to be less than or equal to one individuals will either invest less in the health preservation effort and more money in the hsa or vice versa however they will never increase both effort and savings simultaneously as was intended when hsas were introduced

determining the impact of federal antidiscrimination policy on the economic status of blacks a study of south carolina this paper evaluates alternative explanations for the dramatic increase in black employment in south carolina manufacturing that occurred in the mid 1960s black progress in traditionally segregated sectors of manufacturing in operation at the time jim crow laws were passed cannot be attributed to tight labor markets the decline of agriculture or the growth of education of the black workforce the only plausible explanation is federal government civil rights and affirmative action policy for newer industries that entered the state on a large scale after world war ii the growth of skills among blacks accounts for black economic progress copyright 1989 by american economic association

moral behaviour altruism and environmental policy free riding is often associated with self interested behaviour however if there is a global pollutant free riding will arise if individuals calculate that their emissions are negligible relative to the total so total emissions and hence any damage that they and others suffer will be unaffected by whatever consumption choice they make in this context consumer behaviour and the optimal environmental tax are independent of the degree of altruism for behaviour to change individuals need to make their decisions in a different way we propose a new theory of moral behaviour whereby individuals recognise that they will be worse off by not acting in their own self interest and balance this cost off against the hypothetical moral value of adopting a kantian form of behaviour that is by calculating the consequences of their action by asking what would happen if everyone else acted in the same way as they did we show that a if individuals behave this way then altruism matters and the greater the degree of altruism the more individuals cut back their consumption of a dirty good b nevertheless the optimal environmental tax is exactly the same as that emerging from classical analysis where individuals act in self interested fashion

optimal taxation global externalities and labor mobility this paper concerns transboundary environmental problems in the context of an optimal tax model we assume that part of the labor force is mobile across countries and that the set of tax instruments includes a nonlinear income tax and a commodity tax on the dirty good that is causing damage to the environment the purpose is to compare the globally optimal second best policy of a cooperative equilibrium with the policy implicit in a noncooperative equilibrium we show that the commodity taxes differ between equilibria because of i transboundary externalities not internalized by national governments ii interaction effects between environmental and other policies and iii labor mobility

clustering in n player preemption games we study a complete information preemption game in continuous time a finite number of firms decide when to make an irreversible observable investment upon investment a firm receives flow profits which decrease in the number of firms that have invested the cost of investment declines over time exogenously we characterize the subgame perfect equilibrium outcome which is unique up to a permutation of players when the preemption race among late investors is sufficiently intense the preemption incentive for earlier investors disappears and two or more investments occur at the same time we identify a sufficient condition in terms of model parameters clustering of investments occurs if the flow profits from consecutive investments are sufficiently close this shows how clustering can occur in the absence of coordination failures informational spillovers or positive payoff externalities

precautionary motive for saving and medical expenses under health uncertainty evidence from korea abstract this paper considers a model of precautionary behavior under health uncertainty and derives testable equations to be used in empirical analysis our empirical findings based on data from korea provide evidence of precautionary motive for saving and medical expenses that arises from health uncertainty

models of technology diffusion abstract the literature on new technology diffusion is vast and it spills over many conventional disciplinary boundaries this paper surveys the literature by focusing on alternative explanations of the dominant stylized fact that the usage of new technologies over time typically follows an s curve the most commonly found model which is used to account for this model is the so called epidemic model which builds on the premise that what limits the speed of usage is the lack of information available about the new technology how to use it and what it does the leading alternate model is often called the probit model which follows from the premise that different firms with different goals and abilities are likely to want to adopt the new technology at different times in this model diffusion occurs as firms of different types gradually adopt it there are actually many ways to generate an s curve and the third class of models which we examine are models of density dependence popularized by population ecologists in these models the twin forces of legitimation and competition help to establish new technologies and then ultimately limit their take up finally we look at models in which the initial choice between different variants of the new technology affect the subsequent diffusion speed of the chosen technology such models often rely on information cascades which drive herd like adoption behaviour when a particular variant is finally selected

saving response to unemployment of a sibling abstract standard theoretical models of household saving behavior do not typically assume that household perceptions of the world change in response to observed events in light of the potential importance of such perception changes e g after a financial crisis this paper considers the hypothesis that a household s saving rate rises through informal learning after a sibling direct or in law has been unemployed the empirical results in this paper are consistent with the learning hypothesis with coefficients estimated by the instrumental variable iv method implying that a household s saving rate increases by 2 3 percentage points if a sibling has been unemployed

shocks and asset dynamics in ethiopia abstractthis article uses household survey panel data of 416 rural households to study asset dynamics in the northern highlands of ethiopia and the response of assets to shocks the period under examination 1996 2003 was marked by severe environmental shocks including a series of droughts the article empirically studies the nature of household asset paths over time using as the point of departure the theory on precautionary savings behavior results indicate that the response of assets to weather shocks the differential effect of these shocks on liquid and less liquid forms of wealth holdings and the nature of asset dynamics are all consistent with the implications of a precautionary motive for holding wealth

inter and intra firm effects in the diffusion of new process technology using primarily the example of computerised numerically controlled machine tools cnc in the uk metalworking and engineering industry it is shown that even many years after the date of first use of a new technology although the larger proportion of firms may be using that technology because the extent of intra firm diffusion is limited the proportion of total industry output produced on that technology may be quite small using backward projection techniques it is further shown that intra firm diffusion tends to lag behind inter firm diffusion over the whole of the diffusion process and inter firm diffusion patterns and extent may thus be poor indicators of overall diffusion although intra firm diffusion is therefore crucial to the understanding of overall diffusion patterns the existing literature relating to it has severe limitations and there are no associated policy results it is argued that much greater emphasis should be placed on intra firm issues in future diffusion research it is also suggested that discussions of intra firm policy could usefully proceed within the context of already established general diffusion policy principles

the diffusion of new agricultural technologies the case of crossbred cow technology in tanzania the recent literature on agricultural technology adoption shows that diffusion of new technologies varies significantly across space and time furthermore puzzles exist about why some seemingly profitable technologies are not adopted especially in livestock production we employ a hazard or duration function to explain diffusion of crossbred cow technology in a unique sample of tanzania farmers a farmer s adoption of crossbred technology depends positively on the proximity of his farm to other users on his schooling and on his access to credit and contact with extension agents

the effect of statistical discrimination on black white wage inequality estimating a model with multiple equilibria this article presents the structural estimation of the parameters of a statistical discrimination model although the model is capable of displaying multiple equilibria an estimation strategy that identifies both the model parameters and the equilibrium selected by the economic agents is developed and empirically implemented a comparison between the selected equilibria and the other potential equilibria reveals that the decline in wage inequality experienced in the u s economy cannot be attributed to changes in the equilibrium selection nonetheless a counterfactual experiment shows that in a color blind society blacks wage would have been on average more than 20 higher

women in the labor market and in the family t here are two themes in this paper the first an exercise in revisionist history argues that the conventional wisdom of an absence of any substantial labor market progress for women is mistaken instead throughout this century women s wages have been steadily rising relative to those of men a progress likely to accelerate in the next few decades our second theme contends that this labor market progress is not enough alongside their labor market advances the relative economic plight of many women is worsening the downside news is the increasing feminization of poverty a reflection of the growing instability of the american family

trade technology and the environment does access to technology promote environmental regulation abstract focusing specifically on regulation of coal fired power plants we examine how technological innovation by early adopters influences the timing of new environmental regulation in non innovating countries we build a general equilibrium model of an open economy to identify the political economy determinants of regulation with a newly created dataset of so 2 and no x regulations for coal fired power plants and a patent based measure of the technology frontier we estimate the determinants of environmental regulation diffusion our findings support the hypothesis that international economic integration eases access to environmentally friendly technologies and leads to earlier adoption ceteris paribus of regulation in non innovating countries however we also find evidence that domestic trade protection promotes earlier adoption allowing shifts of regulatory costs to domestic consumers furthermore international market power permits large countries to shift costs to foreign consumers other political economy factors such as the quality of domestic coal are also important determinants

preemption and rent equalization in the adoption of new technology we study the adoption of a new technology to illustrate the effects of preemption in games of timing we show that the threat of preemption equalizes rents in a duopoly but that this result does not extend to the general oligopoly game if the gain to preemption is sufficiently small then the optimal symmetric outcome which involves late adoption is an equilibrium this contrasts with reinganum s result that in precommitment equilibria there must be diffusion we develop a new and richer formalism for modeling games of timing which permits a continuoustime representation of the limit of discrete time mixed strategy equilibria

state antitrust enforcement in the us and implications for small business entry and relocation this article examines the impact of the important yet little studied state level antitrust enforcement activity on entry and relocation behaviour by small us firms feinberg and husted 2011 have shown that this enforcement especially nonhorizontal cases may be viewed by potential entrants as a negative aspect of the state business climate however they did not pursue a more disaggregate analysis of small firm entry behaviour nor did they investigate different responses between manufacturing wholesaling and retailing firms another related issue is the extent to which state cases filed in tandem with federal investigations have the same impact on establishment entry as do purely independent cases these considerations are dealt with in this article the author uses annual state level data from the statistics of us business to examine entry and relocation reactions to state antitrust enforcement by firms within three small business categories 1 19 employees 20 99 employees 100 499 employees g

strategic nonlinear income tax competition with perfect labor mobility abstract tax competition between two governments who choose nonlinear income tax schedules to maximize the average utility of their residents when skills are unobservable and labor is perfectly mobile is examined we show that there are no equilibria in which there is a skill type that pays positive taxes to one country and whose utility is larger than the average utility in the other country or in which the lowest skilled are subsidized we also show that it is possible for the most highly skilled to receive a net transfer funded by taxes on lower skilled individuals in equilibrium these findings confirm the race to the bottom thesis in this setting

information transmission in irrigation technology adoption and diffusion social learning extension services and spatial effects in this article we investigate the role of information transmission in promoting agricultural technology adoption and diffusion through extension services and social learning we develop a theoretical model of technology adoption and diffusion which we then empirically apply using duration analysis on a micro dataset consisting of recall data covering the period 1994 2004 for olive producing farms from crete greece our findings suggest that both extension services and social learning are strong determinants of technology adoption and diffusion while the effectiveness of each of the two informational channels is enhanced by the presence of the other

the diffusion of computers and the distribution of wages abstract when the costs are decreasing workers adopt technology at the point where the costs equal the increased productivity output per worker increases immediately while productivity benefits increase only gradually if costs continue to fall as a result workers in computer adopting labor market groups experience an immediate fall in wages due to increased supply on the other hand adopting workers experience wage increases with some delay this model explains why increased computer use does not immediately lead to higher wage inequality more specifically the results of the model are shown to be consistent with the question why within group wage inequality among skilled workers as a result of computer technology adoption in the united states increased in the 1970s while between group wage inequality and within group wage inequality among the unskilled did not start to increase until the 1980s the model also predicts that the more compressed german wage structure leads to a lagged diffusion of computer technology along with smaller changes in wage inequality our empirical analysis suggests that this is consistent with the actual developments in germany since the 1980s finally the theoretical predictions seem to be of the right magnitude to explain the empirical quantities observed in the data

e business usage across and within firms in the uk profitability externalities and policy using data from the third uk community innovation survey we model the usage of e business across and within firms in the uk in the year 2000 as a single observation upon an integrated process of inter and intra firm diffusion the intra firm dimension is a significant extension to standard analysis the model estimates indicate that the pattern of e business usage reflects the heterogeneity of firms in terms of size other innovative activity and labour force skills generating differences in the payoffs to use as well as market and non market intermediated externalities the policy implications of the findings are discussed c 2008 elsevier b v all rights reserved

precautionary savings of agents with heterogeneous risk aversion this article focuses on the estimation of the importance of the precautionary motive in the wealth accumulation decision we use the micro data set of the de nederlandsche bank dnb household survey dhs centerdata tilburg university a dutch household survey containing information on wealth a subjective measure of income uncertainty and subjective qualitative measures of risk aversion we find that only a small share of wealth is accumulated for the precautionary motive by the dutch households this share of wealth is constant across assets with different degrees of liquidity the economic downturn of the period 2008 to 2010 seems to affect risk attitudes and precautionary saving our findings also suggest that the more risk averse individuals are those who hold less savings

altruism in the family and selfishness in the market place adam smith argued in a famous passage that people are selfish in their market transactions it is not from the benevolence of the butcher the brewer or the baker that we expect our dinner but from their regard to their own interest we address ourselves not to their humanity but to their self love and never talk to them of our own necessities but of their advantages 1937 p 14 in an earlier study he said with irony we are not ready to suspect any person of being defective in selfishness 1853 p 446 selfishness in market transactions has been assumed in practically all subsequent discussions of the economic system objections were dismissed with vague allusions to human nature or with an assertion that altruism loses out to selfishness in the struggle to survive in the market sector yet altruism is generally recognized to be important within a family again adam smith said

international aspects of pollution control pollution is a by product of production is only gradually dissolved by the environment and crosses national borders the market outcome ignores the adverse effects of pollution and thus yields higher levels of output and pollution than would prevail under a supranational social planner which does care about pollution in practice governments often do not cooperate and this leads to outcomes of pollution and production in between the market outcomes and the outcomes under supra national social planning absence of precommitment leads to lower emission charges less cleaning up activities and more pollution appropriate levels of emission charges under the various outcomes are a result of this analysis attention is also paid to investment in clean technology the debate between optimists who believe that higher production is compatible with sound environmental policy and pessimists can be analysed in this way