pushing the boundaries of climate economics critical issues to consider in climate policy analysis abstract climate policy choices are influenced by the economics literature which analyses the costs and benefits of alternative strategies for climate action this literature in turn rests on a series of choices about the values and assumptions underlying the economic analysis the methodologies for treating dynamics technological change risk and uncertainty and the assumed interactions between economic systems society and the environment including institutional constraints on climate policy we identify and discuss such critical issues pushing at the boundaries of current climate economics research new thinking in this area is gathering pace in response to the limitations of traditional economic approaches and their assumptions on economic behaviour ecological properties and socio technical responses we place a particular emphasis on the role of induced technological change and institutional setups in shaping cost effective climate action that also promotes economic development and the alleviation of poverty

frictionless commerce a comparison of internet and conventional retailers there have been many claims that the internet represents a new nearly frictionless market our research empirically analyzes the characteristics of the internet as a channel for two categories of homogeneous products books and cds using a data set of over 8 500 price observations collected over a period of 15 months we compare pricing behavior at 41 internet and conventional retail outlets we find that prices on the internet are 9 16 lower than prices in conventional outlets depending on whether taxes shipping and shopping costs are included in the price additionally we find that internet retailers price adjustments over time are up to 100 times smaller than conventional retailers price adjustments presumably reflecting lower menu costs in internet channels we also find that levels of price dispersion depend importantly on the measures employed when we compare the prices posted by different internet retailers we find substantial dispersion internet retailer prices differ by an average of 33 for books and 25 for cds however when we weight these prices by proxies for market share we find dispersion is lower in internet channels than in conventional channels reflecting the dominance of certain heavily branded retailers we conclude that while there is lower friction in many dimensions of internet competition branding awareness and trust remain important sources of heterogeneity among internet retailers

the microfinance promise in the past decade microfinance programs have demonstrated that it is possible to lend to low income households while maintaining high repayment rates even without requiring collateral the programs promise a revolution in approaches to alleviating poverty and spreading financial services and millions of poor households are served globally a growing body of economic theory demonstrates how new contractual forms offer a key to microfinance success particularly the use of group lending contracts with joint liability for the most part however high repayment rates have not translated into profits and studies of impacts on poverty yield a mixed picture in describing emerging tensions the paper highlights the diversity of innovative mechanisms beyond group lending contracts the measurement of financial sustainability the estimation of economic and social impacts the costs and benefits of subsidization and the potential to reduce poverty through savings programs rather than just credit the promise of microfinance has pushed far ahead of the evidence and an agenda is put forward for addressing critical empirical gaps and sharpening the terms of policy discussion

why does the combination of the european union emissions trading scheme and a renewable energy target makes economic sense abstract the european climate and energy mix of targets and policies has been criticised by many economists in particular it is often argued that the renewable energy targets do not make economic sense because they represent an expensive option to reduce co2 emissions within a cap and trade scheme such as the european union emissions trading scheme eu ets in addition it has also been claimed that support for renewable electricity deployment negatively interacts with the eu ets having a dampening effect on the co2 price which favours the dirtiest technologies and is detrimental for the greener ones in this article we argue that this mainstream economic view is short sighted and that a multidisciplinary economic analysis of the climate and energy policy mix is required mainstream economic analysis is based on a narrow approach for the assessment of instrument combinations and neglects relevant insights from several economic disciplines including innovation economics and political economy approaches in reality economic theory supports the combination of an ets and renewable energy targets the existence of different policy goals and market failures the demand pull influence of renewable energy policies on innovation a political economy approach and the different risk exposure of renewable energy technologies call for a policy mix although policy combinations are not a panacea and bring problems on their own the aforementioned negative interaction between renewable energy deployment and the carbon price in the eu ets can be mitigated through appropriate coordination and or instrument choice and design

group lending repayment incentives and social collateral abstract in this paper we investigate the impact on repayment rates of lending to groups which are made jointly liable for repayment this type of scheme especially in the guise of the grameen bank in bangladesh has received increasing attention we set up and analyze the repayment game which group lending gives rise to our analysis suggests that such schemes have both positive and negative effects on repayment rates the positive effect is that successful group members may have an incentive to repay the loans of group members whose projects have yielded insufficient return to make repayment worthwhile the negative effect arises when the whole group defaults even when some members would have repaid under individual lending we also show how group lending may harness social collateral which serves to mitigate its negative effect

choice proliferation simplicity seeking and asset allocation abstract in settings such as investing for retirement or choosing a drug plan individuals typically face a large number of options in this paper we analyze how the size of the choice set influences which alternative is selected we present both laboratory experiments and field data that suggest larger choice sets induce a stronger preference for simple easy to understand options the first experiment demonstrates that in seeming violation of the weak axiom of revealed preference subjects are more likely to select a given sure bet over non degenerate gambles when choosing from a set of 11 options than when choosing from a subset of 3 the second experiment clarifies that large choice sets induce a preference for simpler rather than less risky options lastly using records of more than 500 000 employees from 638 institutions we demonstrate that the presence of more funds in an individual s 401 k plan is associated with a greater allocation to money market and bond funds at the expense of equity funds

how video rental patterns change as consumers move online how will consumption patterns for popular and long tail products change when consumers move from brick and mortar to internet markets we address this question using customer level panel data obtained from a national video rental chain as it was closing many of its local stores these data allow us to use the closure of a consumer s local video store as an instrument breaking the inherent endogeneity between channel choice and product choice our results suggest that when consumers move from brick and mortar to online channels they are significantly more likely to rent niche titles relative to blockbusters this suggests that a significant amount of niche product consumption online is due to the direct influence of the channel on consumer behavior not just due to selection effects from the types of consumers who decide to use the internet channel or the types of products that consumers decide to purchase online this paper was accepted by pradeep chintagunta marketing

the development of securities law in the united states given the existence of contract property fraud and company law what is the purpose of securities laws broadly speaking they can serve either of two functions or some mix of both the first is to facilitate contracting among entrepreneurs managers shareholders and financial intermediaries by providing a standardized set of rights and obligations la porta et al 2005 such laws are motivated by the desire to reduce transaction costs where contracting parties are widely dispersed and both writing complete contracts ex ante and renegotiating ex post are difficult a second possible function is to restrict contracting by limiting the set of legally available terms such laws reflect the view that securities markets are beset by market failures stemming from externalities or investor irrationality coffee 1984 fox 1999 langevoort 2002 for the sake of simplicity we can call the first a contracting paradigm and the second a regulatory paradigm

sulfur dioxide control by electric utilities what are the gains from trade title iv of the 1990 clean air act amendments caaa established a market for transferable sulfur dioxide so2 emission allowances among electric utilities this market offers firms facing high marginal abatement costs the opportunity to purchase the right to emit so2 from firms with lower costs and this is expected to yield cost savings compared to a command and control approach to environmental regulation this paper uses econometrically estimated marginal abatement cost functions for power plants affected by title iv of the caaa to evaluate the performance of the so2 allowance market specifically we investigate whether the much heralded fall in the cost of abating so2 compared to original estimates can be attributed to allowance trading we demonstrate that for plants that use low sulfur coal to reduce so2 emissions technical change and the fall in prices of low sulfur coal have lowered marginal abatement cost curves by over 50 percent since 1985 the flexibility to take advantage of these chan

reinventing public r d patent policy and the commercialization of national laboratory technologies when innovations are heterogeneous it may be advantageous to provide a variety of patents by trading off patent breadth for length it is possible that fees are not needed in the optimal policy we present two examples the first is a quality ladder model in which innovations benefit society directly as well as through their use as building blocks to future inventions and the rate of arrival for the future innovation is unobserved more fertile innovations get more breadth for a shorter time menus may also be useful in the case of horizontal product differentiation copyright 2001 by the rand corporation

the induced innovation hypothesis and energy saving technological change we develop a methodology for testing hicks s induced innovation hypothesis by estimating a product characteristics model of energy using consumer durables augmenting the hypothesis to allow for the ine uence of government regulations for the products we explored the evidence suggests that i the rate of overall innovation was independent of energy prices and regulations ii the direction of innovation was responsive to energy price changes for some products but not for others iii energy price changes induced changes in the subset of technically feasible models that were offered for sale iv this responsiveness increased substantially during the period after energy efficiency product labeling was required and v nonetheless a sizable portion of efficiency improvements were autonomous

the impact of obesity on wages abstract previous studies of the relationship between body weight and wages have found mixed results this paper uses a larger data set and several regres sion strategies in an attempt to generate more consistent estimates of the effect of weight on wages differences across gender race and ethnicity are explored this paperjnds that weight lowers wages for white females ols esti mates indicate that a difference in weight of two standard deviations roughly 65 pounds is associated with a difference in wages of 9 percent in absolute value this is equivalent to the wage effect of roughly one and a half years of education or three years of work experience negative cor relations between weight and wages observed for other gender ethnic groups appear to be due to unobserved heterogeneity i introduction several previous studies have found among females a negative cor relation between body weight and wages there exist three broad categories of ex planations for this finding the first explanation is that obesity lowers wages for example by lowering productivity or because of workplace discrimination the sec ond is that low wages cause obesity this would be true if poorer people consume

environmental policy government and the market environmental policy is made in a context of both market failure and government failure on the one hand leaving environmental protection to the free market relying on notions of corporate social responsibility and altruistic consumer and shareholder preferences will not deliver optimal results on the other hand nationalizing the delivery of environmental protection is likely to fail because nation states rarely have the depth and quality of information required to instruct all the relevant agents to make appropriate decisions thus as for many areas of policy appropriate models of environmental intervention will lie between these two extremes while it is impossible to specify general rules concerning the precise form of intervention in part because the type of intervention depends upon value judgements this paper sets out some of the considerations that are particular to environmental policy and explores several principles for policy design including information coordination and principal agent problems with a particular focus on the international context

demand pull and technology push public support for eco innovation the case of the biofuels sector the purpose of this paper is to explore the differentiated impact of demand pull and technology push policies in shaping technological patterns in the biofuels sector the empirical analysis is based on a novel and original database biopat containing patents in the field of biofuels selected using appropriate keywords and classified according to the technological content of the invention our results generally show that technological capabilities and environmental regulation spur innovative activities in the biofuels sector both demand pull and technology push factors are found to be important drivers of innovation in the biofuels sector however technology exploitation activities in first generation technologies are found to be mainly driven by quantity and price based demand pull policies on the contrary the pace of technology exploration efforts in advanced generation biofuels is shown to react positively to price based demand pull incentives but also to technology push policy the clear diversity in the impact of different public support instruments provides new insights which fuel discussion on the optimal policy mix debate and offers new elements for the design of future policy strategies

costly bidding in online markets for it services internet enabled markets are becoming viable venues for procurement of professional services we investigate bidding behavior within the most active area of these early knowledge markets the market for software development these markets are important both because they provide an early view of the effectiveness of online service markets and because they have a potentially large impact on how software development services are procured and provided using auction theory we develop a theoretical model that relates market characteristics to bidding and transaction behavior taking into account costly bidding we then test our model using data from an active online market for software development services which yields contracts for 30 40 of posted projects in its current format however the studied market may induce excessive bidding by vendors consistent with our theoretical predictions and those of carr 2003 higher value projects attract significantly more bids with lower average quality greater numbers of bids raise the cost to all participants due to costly bidding and bid evaluation perhaps as a consequence higher value projects are also much less likely to be awarded

the goals and promise of the sarbanes oxley act the primary goal of the sarbanes oxley act was to fix auditing of u s public companies consistent with its full official name the public company accounting reform and investor protection act of 2002 by consensus auditing had been working poorly and increasingly so the most important and most promising part of sarbanes oxley was the creation of a unique quasi public institution to oversee and regulate auditing the public company accounting oversight board pcaob in controversial section 404 the law also created new disclosure based incentives for firms to spend money on internal controls above increases that would have occurred after the corporate scandals of the early 2000s in exchange for these higher costs which have already fallen substantially sarbanes oxley promises a variety of long term benefits investors will face a lower risk of losses from fraud and theft and benefit from more reliable financial reporting greater transparency and accountability public companies will pay a lower cost of capital and the economy will benefit because of a better allocation of resources and faster growth sarbanes oxley remains a work in progress section 404 in particular was implemented too aggressively but reformers should push for continued improvements in its implementation by pcaob rather than for repeal of the legislation itself

george stigler s contribution to the economic analysis of regulation george stigler changed the way economists analyze government regulation this enormous legacy is essentially embodied in two articles his 1962 analysis of electricity rates with claire friedland and his 1971 theoretical piece there were to be sure precursors and successors in his own work but none of them so profoundly affected the course of intellectual inquiry as these two the importance of both articles rests more i believe with the questions each posed than with the answers even by the standards of the day neither piece evinced the sort of technical sophistication that the profession has come to admire neither produced conclusions that were impervious to all serious subsequent challenges but both produced insights that have altered the course of research in the area to this day to understand stigler s contribution it is best to proceed chronologically and to begin with the state of the field around 1962 there is room here only for caricature rather than extensive survey however i think it is fair to say that the field derived its main energy from the normative economics of marginal cost pricing the proper role of government was to correct the private market failures that prevented attainment of marginal cost pricing applied economic analysis of regulation was then largely descriptive and its main tendency was to show how the regulatory institutions constrained departures from marginal cost pricing monopoly was viewed as the main barrier to marginal cost pricing and the natural monopoly occupied center stage in the economics of regulation the prime examples of natural monopoly were sup1 man made monopolies were the main subject matter of industrial organization stigler s profound influence on this field is summarized by harold demsetz s article in this issue

balancing demand pull and supply push measures to support renewable electricity in europe abstract increasing the share of renewable energy is deemed essential to reduce the carbon intensity of the current electricity mix the promotion of renewable energy technologies should thus be as effective and efficient as possible therefore support schemes should explicitly consider the balance between demand pull e g production subsidies and supply push efforts public rdd the cumulative pull push ratio for biogas is about 700 in the 5 year lag case and about 1200 in the other cases 10 yr lag or more although the debate on optimal rd d efforts is not conclusive and very sector specific it is relevant to compare our findings to average pull push ratios of about 20 in the engineering sector overall we can safely conclude that european governments should critically evaluate current renewables subsidy schemes and increase public rd d investments to support next waves of renewable energy technologies

instrument choice for environmental protection when technological innovation is endogenous this paper compares qualitatively and quantitatively the welfare effects of emissions taxes auctioned emissions permits and free grandfathered permits when technological innovation is endogenous we find that there is no unambiguous case for preferring any of these policy instruments the relative welfare ranking of instruments depends on the costs of innovation the extent to which innovations can be imitated the slope and level of the marginal environmental benefit function and the number of polluting firms we illustrate the types of situations when there can be significant welfare discrepancies between the policies and when there are not

what s in a picture evidence of discrimination from prosper com abstract we find evidence of significant racial disparities in a new type of credit market known as peer to peer lending loan listings with blacks in the attached picture are 25 to 35 percent less likely to receive funding than those of whites with similar credit profiles despite the higher average interest rates charged to blacks lenders making such loans earn a lower net return compared to loans made to whites with similar credit profiles because blacks have higher relative default rates these results provide insight into whether the discrimination we find is taste based or statistical

information in online labour markets online labour markets are virtual platforms that solve information problems to enable gains from trade in remote labour services they make employers and workers aware of each other and allow them to communicate contract and produce remotely recent research suggests however that organizing production to include remote work remains challenging because employers and workers in these markets continue to lack information that is less easily communicated employers appear unable to accurately anticipate the full costs and benefits to them of using the market prior to entry and continue to have difficulty evaluating worker applications even when experienced in these markets information is particularly incomplete when wage arbitrage opportunity is greatest

inefficient hiring in entry level labor markets hiring inexperienced workers generates information about their abilities if this information is public workers obtain its benefits if workers cannot compensate firms for hiring them firms will hire too few inexperienced workers i determine the effects of hiring workers and revealing more information about their abilities through a field experiment in an online marketplace i hired 952 randomly selected workers giving them either detailed or coarse public evaluations both hiring workers and providing more detailed evaluations substantially improved workers subsequent employment outcomes under plausible assumptions the experiment s market level benefits exceeded its cost suggesting that some experimental workers had been inefficiently unemployed

market and political regulatory perspectives on the recent accounting scandals not surprisingly the recent accounting scandals look different when viewed from the perspectives of the political regulatory process and of the market for corporate governance and financial reporting we do not have the opportunity to observe a world in which either market or political regulatory processes operate independently and the events are recent and not well researched so untangling their separate effects is somewhat conjectural this paper offers conjectures on issues such as what caused the scandalous behavior why was there such a rash of accounting scandals at one time who killed arthur andersen the securities and exchange commission or the market did fraudulent accounting kill enron or just keep it alive for too long what is the social cost of financial reporting fraud does the united states in fact operate a principles based or a rules based accounting system was there market failure or was there regulatory failure or both was the sarbanes oxley act a political and regulatory overreaction does the united states follow an ineffective regulatory model

public financing of innovation new questions economic theory justifies policy when there are concrete market failures the article shows how in the case of innovation successful policies that have led to radical innovations have been more about market shaping and creating through direct and pervasive public financing rather than market fixing the paper reviews and discusses evidence for this in three key areas i the presence of finance from public sources across the entire innovation chain ii the concept of mission oriented policies that have created new technological and industrial landscapes and iii the entrepreneurial and lead investor role of public actors willing and able to take on extreme risks independent of the business cycle we further illustrate these three characteristics for the case of clean technology and discuss how a market creating and shaping perspective may be useful for understanding the financing of transformative innovation needed for confronting contemporary societal challenges

creative destruction or mere niche support innovation policy mixes for sustainability transitions recently there has been an increasing interest in policy mixes in innovation studies while it has long been acknowledged that the stimulation of innovation and technological change involves different types of policy instruments how such instruments form policy mixes has only recently become of interest we argue that an area in which policy mixes are particularly important is the field of sustainability transitions transitions imply not only the development of disruptive innovations but also of policies aiming for wider change in socio technical systems we propose that ideally policy mixes for transitions include elements of creative destruction involving both policies aiming for the creation of new and for destabilising the old we develop a novel analytical framework including the two policy mix dimensions creation and destruction by broadening the technological innovation system functions approach and specifically by expanding the concept of motors of innovation to motors of creative destruction we test this framework by analysing low energy policy mixes in finland and the uk we find that both countries have diverse policy mixes to support energy efficiency and reduce energy demand with instruments to cover all functions on the creation side despite the demonstrated need for such policies unsurprisingly destabilising functions are addressed by fewer policies but there are empirical examples of such policies in both countries the concept of motors of creative destruction is introduced to expand innovation and technology policy debates to go beyond policy mixes consisting of technology push and demand pull instruments and to consider a wider range of policy instruments combined in a suitable mix which may contribute to sustainability transitions

credible carbon policy the paper sets out the credibility problem in carbon policy provides a number of examples of non credibility in recent energy policy and identifies the costs of failing to address it the time inconsistency of carbon policy arising because of multiple objectives the irreversibility of energy investments and the scope for ex post reneging on ex ante commitments to set policy instruments such as carbon taxes or emission permits at appropriate levels is set in a conceptual framework analogies with monetary policy are drawn and a solution to the time inconsistency problem is proposed through the establishment of an energy carbon agency

emissions pricing spillovers and public investment in environmentally friendly technologies in a second best world of below optimal pollution pricing the public return to r d may be greater than under pigouvian pricing due to excess benefits of increasing abatement or it may be lower since private actors lack the incentives to take full advantage of the new cleaner technologies this paper uses a simple model to demonstrate the interaction between environmental policies r d externalities and the social return to innovation the results indicate that strong public support for innovation in abatement technologies is only justified if at least a moderate emissions policy is in place and spillover effects are significant if emissions policy can adjust to cost changes the public role may be enhanced since private actors will prefer to avoid ratcheting social gains from innovation increase only if innovation can allow emissions to be more fully priced technology policy is more effective with fuller emissions pricing and is better viewed as a complement to than a substitute for mitigation policy

assessing policy strategies for the promotion of environmental technologies a review of india s national solar mission abstract there is widespread consensus that no individual policy instrument but rather a policy mix is needed to effectively drive the development and diffusion of environmental technologies however what exactly constitutes such a policy mix remains largely undefined this paper takes this discussion a step further by developing a comprehensive framework for assessing and comparing policy approaches for the promotion of environmental technologies it begins with a critical review of existing policy mix concepts pointing out key shortcomings to address the identified challenges it proposes the concept of a policy strategy as an alternative framework for policy assessment and comparison this serves as the basis for integrating findings from the literature on environmental innovation and technological change in a comprehensive framework for assessing policy strategies for the promotion of environmental technologies the framework is then applied for the assessment of india s national solar mission the country s strategy for promoting solar energy technologies based on the resulting findings the potential and limitations of the proposed framework are discussed

financial performance and outreach a global analysis of leading microbanks microfinance contracts have proven able to secure high rates of loan repayment in the face of limited liability and information asymmetries but high repayment rates have not translated easily into profits for most microbanks profitability though is at the heart of the promise that microfinance can deliver poverty reduction while not relying on ongoing subsidy the authors examine why this promise remains unmet for most institutions using a data set with unusually high quality financial information on 124 institutions in 49 countries they explore the patterns of profitability loan repayment and cost reduction the authors find that institutional design and orientation matter substantially lenders that do not use group based methods to overcome incentive problems experience weaker portfolio quality and lower profit rates when interest rates are raised substantially for these individual based lenders one key to achieving profitability is investing more heavily in staff costs a finding consistent with the economics of information but contrary to the conventional wisdom that profitability is largely a function of minimizing cost

characterizing the policy mix and its impact on eco innovation a patent analysis of energy efficient technologies abstract this paper provides an empirical investigation of the role played by selected characteristics of the policy mix in inducing innovation in energy efficiency technologies an original dataset covering 23 oecd countries over the period 1990 2010 combines the full set of policies in the energy efficiency domain for the residential sector with data on patents applied over the same period in this specific technological sector the econometric results suggest that when the policy mix is characterised by a more balanced use in demand pull and technology push instruments its positive effects on eco innovation tend to be greater moreover a more comprehensive policy mix is shown to be able to enhance innovation activities for the generation of new energy efficient technologies however the simple addition of an indiscriminate number of simultaneous policy instruments may reduce policy mix effectiveness finally the empirical findings confirm previous evidence on the importance of policy spillover effects and suggest that policy similarity between countries may represent an important aspect to be accounted for in policy mix design

the keynote papers and the current financial crisis one hesitates to write history as it happens or to draw policy lessons from current events the conference took place in may 2008 after the government assisted takeover of bear stearns but before a capital market downturn fueled a system wide liquidity crisis with successive insolvencies at indymac fannie mae freddie mac lehman aig wamu and as i write citigroup but it would be odd to comment on capital market regulation without mentioning the events of the last three months i am first to acknowledge that anything i might have written in may would not have foreseen the crisis or linked capital market regulation to financial institutions which in the us have been conventionally treated as discrete in discourse and institutions e g u s treasury 2008 leuz and wysocki 2008

reputation transferability in online labor markets online workplaces such as odesk amazon mechanical turk and taskrabbit have been growing in importance over the last few years in such markets employers post tasks on which remote contractors work and deliver the product of their work online as in most online marketplaces reputation mechanisms play a very important role in facilitating transactions since they instill trust and are often predictive of the employer s future satisfaction however labor markets are usually highly heterogeneous in terms of available task categories in such scenarios past performance may not be an accurate signal of future performance to account for this natural heterogeneity in this work we build models that predict the performance of a worker based on prior category specific feedback our models assume that each worker has a category specific quality which is latent and not directly observable what is observable though is the set of feedback ratings of the worker and of other contractors with similar work his

challenges for r d and innovation in energy abstract in recent years there has been a growing interest in the role of r d and innovation in energy efficiency and dealing with climate change to improve our knowledge in these matters a workshop was organized in barcelona spain in january 2014 this introduction to the special issue first presents some insights from the literature on challenges for r d and innovation in energy the second section summarises the articles from this workshop that make up this special issue and that provide new insights into innovation in energy all the articles include energy policy recommendations based on the empirical analyses carried out

the innovation effects of environmental policy instruments a typical case of the blind men and the elephant abstract in this paper we examine the innovation effects of environmental policy instruments in four literatures theoretical models on incentives for eco innovation econometric studies based on observed data survey analysis based on stated information and technology case studies the aim of this paper is to critically examine the methods and the results we argue that the case studies literature even when its results are specific and difficult to generalise is a necessary source of empirical evidence about policy impacts and the factors responsible for these impacts pointing to issues that are neglected in the theoretical and econometric literature such as the specifics of the innovation context and policy interaction effects the paper states five synthesised findings and makes a plea for multi method analysis one other important synthesised finding is that the influence of market based instruments on innovation such as emission trading and taxes is far weaker than assumed

induced innovation and energy prices this paper uses u s patent data from 1970 to 1994 to study the impact of energy prices on energy efficient innovations theories of technological change have focused both on demand side factors which spur innovative activity by increasing the value of new innovations and supply side factors such as scientific advancements that make new innovations possible data on demand side factors are easily obtained but data on supply side factors that influence innovation are not readily available this paper uses patent citations as a measure of the usefulness of the existing base of scientific knowledge citations to previous patents are used to construct productivity estimates which measure the usefulness of the existing stock of knowledge to inventors in a given energy field for any given year these estimates are then combined with data on demand side factors to estimate a model of induced innovation in energy technologies the results indicate that both energy prices and the supply of knowledge have strongly significant positive effects on innovation the paper concludes with a discussion of the implication of this work for environmental policy

why beauty matters we decompose the beauty premium in an experimental labor market where employers determine wages of workers who perform a maze solving task this task requires a true skill which we show to be unaffected by physical attractiveness we find a sizable beauty premium and can identify three transmission channels a physically attractive workers are more confident and higher confidence increases wages b for a given level of confidence physically attractive workers are wrongly considered more able by employers c controlling for worker confidence physically attractive workers have oral skills such as communication and social skills that raise their wages when they interact with employers our methodology can be adopted to study the sources of discriminatory pay differentials in other settings

sex discrimination in restaurant hiring an audit study in an audit study of sex discrimination in hiring comparably matched pairs of men and women applied for jobs as waiters and waitresses at restaurants in philadelphia in high price restaurants where earnings are higher job applications from women had an estimated probability of receiving a job offer that was lower by about 0 4 and an estimated probability of receiving an interview that was lower by about 0 35 both estimated differentials are statistically significant additional evidence suggests that customer discrimination partly underlies the hiring discrimination

orchestrating impartiality the impact of blind auditions on female musicians a change in the audition procedures of symphony orchestras adoption of blind auditions with a screen to conceal the candidate s identity from the jury provides a test for sex biased hiring using data from actual auditions in an individual fixed effects framework we find that the screen increases the probability a woman will be advanced and hired although some of our estimates have large standard errors and there is one persistent effect in the opposite direction the weight of the evidence suggests that the blind audition procedure fostered impartiality in hiring and increased the proportion women in symphony orchestras

beauty weight and skin color in charitable giving abstract this paper examines bias in online charitable microfinance lending we find that charitable lenders on a large peer to peer online microfinance website appear to favor more attractive lighter skinned and less obese borrowers borrowers who appear more needy honest and creditworthy also receive funding more quickly these effects are quantitatively significant borrowers with beauty one standard deviation above average are treated as though they are requesting approximately 11 less money statistical discrimination does not appear to explain our findings as these borrower attributes are uncorrelated with loan performance or borrower enterprise performance the evidence suggests implicit bias could explain our findings more experienced lenders who may rely less on implicit attitudes appear to exhibit less bias than inexperienced lenders

does standardized information in online markets disproportionately benefit job applicants from less developed countries abstract we examine trade in services between employers from developed countries dcs and workers from less developed countries ldcs on an online platform for contract labor we report evidence that 1 dc employers are less likely to hire ldc compared to dc workers even after controlling for a wide range of observables 2 workers with standardized and verified work history information are more likely to be hired and 3 information on verified work history disproportionately benefits ldc contractors the ldc premium also applies to additional outcomes including wage bids obtaining an interview and being shortlisted in addition the evidence suggests that informational limits to trade may be addressed through a variety of market design approaches for instance an online monitoring tool substitutes for verified work history information

peer monitoring and credit markets a major problem for institutional lenders is ensuring that borrowers exercise prudence in the use of the funds so that the likelihood of repayment is enhanced one partial solution is peer monitoring having neighbors who are in a good position to monitor the borrower be required to pay a penalty if the borrower goes bankrupt peer monitoring is largely responsible for the successful financial performance of the grameen bank of bangladesh and of similar group lending programs elsewhere but peer monitoring has a cost it transfers risk from the bank which is in a better position to bear risk to the cosigner in a simple model of peer monitoring in a competitive credit market this article demonstrates that the transfer of risk leads to an improvement in borrowers welfare

the impact of group based credit programs on poor households in bangladesh does the gender of participants matter this paper estimates the impact of participation by gender in the grameen bank and two other group based micro credit programs in bangladesh on labor supply schooling household expenditure and assets the empirical method uses a quasi experimental survey design to correct for the bias from unobserved individual and village level heterogeneity we find that program credit has a larger effect on the behavior of poor households in bangladesh when women are the program participants for example annual household consumption expenditure increases 18 taka for every 100 additional taka borrowed by women from these credit programs compared with 11 taka for men

matching and sorting in online dating using data on user attributes and interactions from an online dating site we estimate mate preferences and use the gale shapley algorithm to predict sta ble matches the predicted matches are similar to the actual matches achieved by the dating site and the actual matches are approximately efficient outof sample predictions of offline matches i e marriages exhibit assortative mating patterns similar to those observed in actual marriages thus mate pref erences without resort to search frictions can generate sorting in marriages however we underpredict some of the correlation patterns search frictions may play a role in explaining the discrepancy

the role of markets and policies in delivering innovation for climate change mitigation this paper identifies market incentives and international and domestic policies that could technologically alter energy systems to achieve greenhouse gas stabilization targets while also meeting other societal goals i consider the conceptual basis and empirical evidence on the effectiveness and efficiency of climate technology policies the paper reviews the literature on trends and prospects for innovation in climate change mitigation and examines the evidence on induced innovation and the implications for the choice of technology policy i then consider the impact of technological advances on the environment the role of direct government support for r d and the complementarities between policies internalizing

internet job search and unemployment durations after decades of stability the technologies used by workers to locate new jobs began to change rapidly with the diffusion of internet access in the late 1990 s which types of persons incorporated the internet into their job search strategy and did searching for work on line help these workers find new jobs faster we address these questions using measures of internet job search derived from the december 1998 and august 2000 cps computer and internet supplements matched with job search outcomes from subsequent cps files we find that internet searchers are positively selected on observables but negatively selected on unobservables a beneficial unemployment duration reducing causal effect of internet job search is consistent with our estimates only if negative selection on unobservables is especially strong in other words only if the population of on line resumes is strongly adversely selected

trust and credit the role of appearance in peer to peer lending although it is well known that appearance based impressions affect labor market and election outcomes little is known about the role appearance plays in financial transactions we address this question using photographs of potential borrowers from a peer to peer lending site consistent with the trust intensive nature of lending we find that borrowers who appear more trustworthy have higher probabilities of having their loans funded moreover borrowers who appear more trustworthy indeed have better credit scores and default less often overall our findings suggest that impressions of trustworthiness matter in financial transactions as they predict investor as well as borrower behavior a man i do not trust could not get money from me on all the bonds in christendom john pierpont morgan 1913 the author 2012 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oup com oxford university press

working for the woman female managers and the gender wage gap most previous research on gender inequality and management has been concerned with the question of access to managerial jobs and the glass ceiling we offer the first largescale analysis that tur

hiring preferences in online labor markets evidence of a female hiring bias online labor marketplaces facilitate the efficient matching of employers and workers across geographical boundaries the exponential growth of this nascent online phenomenon holds important social and economic implications as the hiring decisions made on these online platforms implicate the incomes of millions of workers worldwide despite this importance limited effort has been devoted to understanding whether potential hiring biases exist in online labor platforms and how they may affect hiring outcomes using a novel proprietary data set from a leading online labor platform we investigate the impact of gender based stereotypes on hiring outcomes after accounting for endogeneity via a holistic set of job and worker controls a matched sample approach and a quasi experimental technique we find evidence of a positive hiring bias in favor of female workers an experiment was used to uncover the underlying gender specific traits that could influence hiring outcomes we find that the observed hiring bi

timing and commitment of environmental policy adoption of new technology and repercussions on r d we investigate the interplay between environmental policy incentives to adoptnew technology and repercussions on r d we study a model where a monopolistic upstream firm engages in r d and sells advanced abatement technology to polluting downstream firms we consider four different timing and commitment regimes of environmental tax and permit policies ex post taxation or issuing permits interim commitment to a tax rate a quota of permits after observing r d success but before adoption and finally two types of ex antecommitment before r d activity one with a unique tax rate quota of permits the other one with a menu of tax rates permit quotas we study the second best tax and permit policies and rank these with respect to welfare in particular we find that commitment to a menu of tax rate dominates all other policy regimes

a tale of two market failures technology and environmental policy abstract market failures associated with environmental pollution interact with market failures associated with the innovation and diffusion of new technologies these combined market failures provide a strong rationale for a portfolio of public policies that foster emissions reduction as well as the development and adoption of environmentally beneficial technology both theory and empirical evidence suggest that the rate and direction of technological advance is influenced by market and regulatory incentives and can be cost effectively harnessed through the use of economic incentive based policy in the presence of weak or nonexistent environmental policies investments in the development and diffusion of new environmentally beneficial technologies are very likely to be less than would be socially desirable positive knowledge and adoption spillovers and information problems can further weaken innovation incentives while environmental technology policy is fraught with difficulties a long term view suggests a strategy of experimenting with policy approaches and systematically evaluating their success

managing permit markets to stabilize prices the political economy of environmental policy favors the use of quantity based instruments over price based instruments e g tradable permits over green taxes at least in the united states with cost uncertainty however there are clear efficiency advantages to prices in cases where the marginal damages of emissions are relatively flat such as with greenhouse gases the question arises therefore of whether one can design flexible quantity policies that mimic the behavior of price policies namely stable permit prices and abatement costs we explore a number of quantity plus policies that replicate the behavior of a price policy through rules that adjust the effective permit cap for unexpectedly low or high costs they do so without necessitating any monetary exchanges between the government and the regulated firms which can be a significant political barrier to the use of price instruments

the role of energy technology innovation in reducing greenhouse gas emissions a case study of canada abstract understanding the influence of energy technology innovation in reducing a country s greenhouse gas emissions requires a systematic review to characterize the existing system a comprehensive data review of available financing mechanisms and investments by government and industry is undertaken for the case of canada coupled with an organized examination of existing international federal and regional climate policies that advance innovation results indicate that investments from early research and development through to capital expenditures are heavily weighted towards fossil fuels though federal efforts to meet international commitments have been unsuccessful regions implementing high carbon fuel phase out renewable portfolio standards and feed in tariffs were found to be successful in reducing emissions financing for clean energy projects is readily available however there is no complete database available for investors to discover these opportunities to enhance clean energy innovation in canada and enable success in emissions reductions we suggest that investments from research and development to capital expenditures and regional policies should be aligned with federal commitments along with clear communication of available financing to attract clean energy investors our approach to a systematic review is broadly applicable to other regions where there is interest in understanding and improving the role of innovation in reducing greenhouse gas emissions particularly in countries with federalist political systems and large fossil fuel reserves

innovation and the international diffusion of environmentally responsive technology abstract new evidence is presented on environmental innovation and diffusion over the 1970s and 1980s at a global level a substantial amount of innovations occurred in the united states japan and germany the share of environmental patents in all patents varied between 0 6 and 3 and as such was higher than the corresponding share of pollution abatement expenditure in gdp japanese environmental innovation rates were consistently high certain plausible connections between environmental regulation and innovation also emerge across these three countries and over time innovation responded to pollution abatement expenditure an indicator of the severity of environmental regulations environmental patenting rates in developing countries were also high reaching 2 in many years in brazil developing country innovators obtained a non trivial number of patents most of which appear geared towards adapting imported technologies to local conditions however domestic innovation was only one path to new technologies imports of disembodied environmental technologies foreign patents registered in developing countries were substantial foreign patents were typically important or generic patents evidence also suggests that such patents protected intellectual property in equipment exported developing countries especially in east asia often chose to obtain technologies embodied in pollution abatement equipment

international technology oriented agreements to address climate change much discussion has surrounded possible alternatives for international agreements on climate change particularly post 2012 among these alternatives technology oriented agreements toas are perhaps the least well defined we explore what toas may consist of why they might be sensible which toas already exist in international energy and environmental governance and whether they could make a valuable contribution to addressing climate change we find that toas aimed at knowledge sharing and coordination research development or demonstration could increase the overall efficiency and effectiveness of international climate cooperation but are likely to have limited environmental effectiveness on their own technology transfer agreements are likely to have similar properties unless the level of resources expended is large in which case they could be environmentally significant technology specific mandates or incentives could be environmentally effective within the applicable sector but are more likely to make a cost effective contribution when viewed as a complement to rather than a substitute for flexible emissions based policies these results indicate that toas could potentially provide a valuable contribution to the global response to climate change the success of specific toas will depend on their design implementation and the role they are expected to play relative to other components of the policy portfolio

giving overseas and public policy remarkable numbers of people give to overseas development charities the aim of this paper is to consider how such overseas giving is best modelled and the implications for public policy widely used theories of charitable giving based on warm glow or the provision of public goods provide insight but are not fully satisfactory as explanations of giving for the specific purpose of development instead an identification approach to individual giving is proposed here that combines the results focus of the public goods formulation with the scale of the warm glow model the theoretical model is used to examine the implications for public policy including the extent to which official aid crowds out private giving and how public policy should take account of private willingness to make charitable transfers overseas