temptation and social security in a dynastic framework abstract we investigate welfare and aggregate implications of a pay as you go payg social security system in a dynastic framework in which individuals have self control problems the presence of self control problems induces individuals to save less because of their urge for temptation towards current consumption individuals efforts to balance between the short term urge for temptation and the long term commitment for consumption smoothing result in self control costs in this environment payg social security works as a self control cost reducing device in contrast the presence of altruism induces individuals to save more this in turn mitigates the adverse effects of self control problems and payg social security on savings but magnifies the self control costs we find that in our environment the adverse welfare effects of a payg system are further mitigated relative to the environments that incorporate altruism and self control issues separately however the level of mitigation is quite modest

student responsiveness to earnings data in the college scorecard using the universe of sat score sends to colleges and the exact date on which these scores are sent we estimate how students responded to the release of the u s department of education s college scorecard in september 2015 we find that data on annual cost and graduation rate both of which were previously available did not impact the volume of score sends received by colleges by contrast we estimate that each 10 increase in reported earnings resulted in a 2 4 increase in score sends the impact is driven almost entirely by well resourced high schools and students we find little evidence that the count or composition of enrolled students changed as a result of the scorecard information shock with the exception of a slight increase in academic preparedness as measured by sat scores among enrollees at colleges with higher reported earnings jel i2 i23 i26 i28 l15

the symmetry between controlling pollution by price and controlling it by quantity under ideally competitive conditions both controlling pollution by price using a combined charge subsidy scheme and controlling it by quantity using a marketable permit scheme can achieve short and long run efficiency and also political acceptability provided that both schemes embody the same degree of environmental ownership the resulting full symmetry between control by price and control by quantity a symmetry overlooked in the literature because of the entry exit assumptions automatically made for most subsidy schemes allows a useful practical choice to be made between the two control systems

effluent regulation and long run optimality a regulator faced with free entry of firms is concerned not only with the implications of public policy for the discharges from a representative firm but also with the total pollution observed at the long run market equilibrium the regulator must take into account not only the effects of regulations upon the net marginal returns of the firm but must also consider the total profit of the firm and incentives for entry and exit this paper shows that effluent charges and tradeable effluent permits lead to long run optimality with entry of small firms the difference between firm payments and environmental damages is interpreted as the rent accruing to the environmental resource this result applies only to the competitive case with small polluters the analysis presented here allows a comparison and clarification of the literature on small and large polluters in a multi input framework with social damages dependent upon total effluents effluent charges are shown here to result in socially optimal entry confirming an assertion of baumol and oates 2 p 179 fn 161 and the important result of schulze and d arge 15 by taking average as well as marginal damages into account the effluent charge results in optimal firm scale levels and the correct input mix at the free entry market equilibrium the firm subject to an effluent tax will operate above or below the private minimum efficient scale depending upon whether average external costs exceed or are less than marginal external costs since public policy to reduce effluents is often directed at reducing the effluentgenerating activity some policy recommendations include a tax on the final output of the polluting firm in some theoretical analyses a relation between the output of the firm and the effluent level is identified and a pigouvian output tax is applied this approach should not be followed by policymakers since an output tax does not provide firms with the correct incentives for either input substitution or market entry it is shown that while a lump sum transfer is needed to provide correct entry incentives when a pigouvian output tax is applied no such transfer is needed if the tax is correctly applied to effluents contrary to 5 even if optimal firm scale and i thank the referees for helpful suggestions the support of the national science foundation under grant ses 82 19121 is gratefully acknowledged any errors are my responsibility 103

energy distribution and economic growth an empirical test for china abstract in this paper we consider whether economic growth in china could be constrained by the physical development of the energy distribution network specifically we structurally test the network theory of electricity distribution of dalgaard and strulik 2011 using city level data for china in their paper they argue that the relationship between the size of the economy measured by capital per capita and electricity consumption per capita is governed by a simple power law with capital having an exponent bounded between and depending on the efficiency of the network we use data for 224 cities in china between 2002 and 2007 to observe whether structural estimates match those of dalgaard and strulik 2011 for 50 us states where they find the exponent in the power law connecting capital with electricity to be 2 3 our results provide an estimate of the power law component to a little higher than the 2 3 found for the us which provides broad support for the model when we look at different time periods we observe what appears to be a fall in the efficiency of the energy distribution network towards the end of our period

bridging the gaps credits adoption and inequality we examine here the role of credits on technology adoption and inequality from the perspective of developing countries utilizing a model of exogenous growth with heterogeneous labor and technical progress embodied in physical capital we find that credits can contribute to a faster adoption and to reducing income inequality thus a virtuous cycle of credits a shorter technological gap less inequality and economic growth is feasible to be created when there is full liquidity in the market when credits are constrained the cycle loses virtuosity where the economy can lose up to two points in growth due to credit constraints

linear pigovian taxes and the optimal size of a polluting industry confusion surrounding the appropriateness of long run considerations in effluent regulation has arisen in the literature and recently carried over into textbooks we use a factor input model under oligopsony to show that when firms can influence the level of marginal damages a linear pollution tax does not satisfy the long run entry exit condition previous results to the contrary are shown to depend on restrictive assumptions efficient policy design requires a lump sum refund or any one of various non linear pricing schemes jel classification q2 l1 il y a beaucoup de confusion dans les debats qui entourent la reglementation des effluents et son caractere plus ou moins appropriea long terme tant dans la litterature specialisee que dans les manuels les auteurs tentent d eliminer cette confusion en analysant les emissions a l aide d un modele standard de demande d intrant quand les entreprises peuvent influencer la valeur presente des dommages marginaux un impot lineaire sur la pollution n entraine pas necessairement les decisions appropriees d entree et de sortie on peut corriger le probleme a l aide d un remboursement forfaitaire ou de l une ou l autre des formes de tarification non lineaire

affirmative action in higher education how do admission and financial aid rules affect future earnings this paper addresses how changing the admission and financial aid rules at colleges affects future earnings i estimate a structural model of the following decisions by individuals where to submit applications which school to attend and what field to study the model also includes decisions by schools as to which students to accept and how much financial aid to offer simulating how black educational choices would change were they to face the white admission and aid rules shows that race based advantages had little effect on earnings however removing race based advantages does affect black educational outcomes in particular removing advantages in admissions substantially decreases the number of black students at top tier schools while removing advantages in financial aid causes a decrease in the number of blacks who attend college

a major in science initial beliefs and final outcomes for college major and dropout taking advantage of unique longitudinal data we provide the first characterization of what college students believe at the time of entrance about their final major relate these beliefs to actual major outcomes and provide an understanding of why students hold the initial beliefs about majors that they do the data collection and analysis are based directly on a conceptual model in which a student s final major is best viewed as the end result of a learning process we find that students enter school quite optimistic about obtaining a science degree but that relatively few students end up graduating with a science degree the substantial overoptimism about completing a degree in science can be attributed largely to students beginning school with misperceptions about their ability to perform well academically in science copyright 2014 oxford university press

the transatlantic productivity gap is r d the main culprit the literature has pointed to different causes to explain the productivity gap between europe and united states in the last decades this paper tests the hypothesis that the lower european productivity performance in comparison with the us can be explained not only by a lower level of corporate rd however using different estimation techniques the r d coefficients for the us firms always turn out to be significantly higher to see to what extent these transatlantic differences may be related to the different sectoral structures in the us and the eu we differentiated the analysis by sectors the result is that both in manufacturing services and high tech sectors us firms are more efficient in translating their r d investments into productivity increases

active learning and optimal climate policy this paper develops a climate economy model with uncertainty irreversibility and active learning whereas previous papers assume learning from one observation per period or experiment with control variables to gain additional information this paper considers active learning from investment in monitoring specifically in improved observations of the global mean temperature we find that the decision maker invests a significant amount of money in climate research far more than the current level in order to increase the rate of learning about climate change this helps the decision maker make improved decisions the level of uncertainty decreases more rapidly in the active learning model than in the passive learning model with only temperature observations as the uncertainty about climate change is smaller active learning reduces the optimal carbon tax the greater the risk the larger is the effect of learning the method proposed here is applicable to any dynamic control problem where the quality of monitoring is a choice variable for instance the precision at which we observe gdp unemployment or the quality of education

the macroeconomic impact of oil earnings uncertainty new evidence from analyst forecasts we develop measures of oil earnings uncertainty oeu using analyst forecasts drawn from a large firm level dataset oeu is related to future economic downturns so some oeu measures may serve to forecast future downturns an increase in oeu also has adverse effects on the us oil sector the results are robust to conditioning on aggregate uncertainty at the same time oeu is related to increases in stock prices unlike aggregate uncertainty which has the opposite effect oeu is thus an independent influence on both the oil industry and on economic aggregates

the taylor principle fights back part ii abstract the existing literature holds that the taylor principle often leads to indeterminacy in new keynesian models that allow for capital accumulation and limited asset market participation this conclusion is special however to the case of continuous full employment when the assumption of perfect wage flexibility is relaxed very slightly so that the labor market clears quickly but not instantaneously determinacy is the norm the threat of indeterminacy is limited to a tiny irrelevant corner of the parameter space where the elasticity of labor supply is unusually high and real wage adjustment is unbelievably fast everywhere else the taylor principle guarantees a unique rational expectations equilibrium the dramatic difference in results reflects the sensitivity of the monetary transmission mechanism to the speed of adjustment in the labor market

choosing the field of study in postsecondary education do expected earnings matter abstract this paper examines the determinants of the choice of the college major when the length of studies and future earnings are uncertain we estimate a three stage schooling decision model focusing on the effect of expected earnings on major choice we control for dynamic selection through the use of mixture distributions exploiting variations across the french business cycle in the relative returns to the majors our results yield a very low though significant elasticity of major choice to expected earnings this suggests that at least for the french university context nonpecuniary factors are a key determinant of schooling choices

the feasibility of the double dividend hypothesis in a democratic economy the two dividends in the double dividend hypothesis are assumed to be independent this assumption can be misleading when it comes to formulating policy i construct a model where the pollution tax rate is voted for by heterogeneous people in addition to the revenue recycling effect the equilibrium pollution tax rate depends on two opposite forces the tax cutting effect and the profit effect the two forces show that an instrument that exploits a greater revenue recycling effect can cause a more severe environmental deterioration thereby resulting in the infeasibility of the hypothesis the introduction of the interdependence between the two dividends can also mean that non revenue raising instruments are more efficient than revenue raising instruments

determinants of college major choice identification using an information experiment this article studies the determinants of college major choice using an experimentally generated panel of beliefs obtained by providing students with information on the true population distribution of various major specific characteristics students logically revise their beliefs in response to the information and their subjective beliefs about future major choice are associated with beliefs about their own earnings and ability we estimate a rich model of college major choice using the panel of beliefs data while expected earnings and perceived ability are a significant determinant of major choice heterogeneous tastes are the dominant factor in the choice of major analyses that ignore the correlation in tastes with earnings expectations inflate the role of earnings in college major choices we conclude by computing the welfare gains from the information experiment and find positive average welfare gains

are nonconvexities important for understanding growth everyday experience and a simple logical argument show that nonconvexities are essential for understanding growth compared to previous statements of this well known argument the presentation here places more emphasis on the distinction between two of the fundamental attributes of any economic good rivalry and excludability it also emphasizes the difference between public goods and the technological advances that are fundamental to economic growth like public goods technological advances are rionrival goods hence they are inextricably linked to nonconvexities but in contrast to public goods which are nonexcludable technological advances generate benefits that are at least partially excludable hence innovations in the technology are for the most part privately provided this means that nonconvexities are relevant for goods that trade in private markets consequently an equilibrium with price taking in all markets cannot be sustained concluding remarks describe some of the recent equilibrium growth models that do not rely on price taking and highlight some of the implications of these models this abstract was borrowed from another version of this item

gender parity and schooling choices abstractwe examine the determinants of gender differences in schooling choices using data on 290 000 secondary school applicants in ghana over a quarter of female students choose home economics as their preferred field of study compared to two per cent of males we find that schooling choices vary significantly with academic performance and educational norms higher performing female students and those from districts with a history of gender parity in educational attainment are less likely to choose home economics differences across geographic areas account for more of the variation in schooling choices than observable individual family and school level characteristics can explain

forming wage expectations through learning evidence from college major choices abstract how do college students choose their majors and what role does the family play in their choices i use data from two major longitudinal surveys to develop and estimate a model in which students learn about earning opportunities associated with different majors through the wages of older siblings and parents the probability of a student choosing a major that corresponds to the occupation of a family member is strongly correlated with the family member s wage at the time the major choice is made this correlation remains strong after controlling for family correlated abilities or preferences and additional empirical evidence suggests that the observed correlation arises through a family based wage information channel

unobserved ability and the return to schooling in the empirical literature it is customary to estimate the return to schooling by ordinary least squares ols or instrumental variable iv techniques 2 the choice of ols is justified only if realized schooling and unobserved labor market ability are uncorrelated if not ols estimates suffer the ability bias and other estimation methods such as iv may be used the volume of work devoted to the return to schooling is a good indication of the importance of this topic as perceived by economists 3 frequently instrumental variables iv techniques are applied in a context where the instrument is only weakly correlated with schooling attainments staiger and stock 1997 as a consequence the validity of very high returns to schooling reported in a simple regression framework should be seriously questioned see manski and pepper 2000 4 when iv techniques are chosen the log wage regression is usually assumed to be linear in schooling however there is no obvious reason to presume that the local returns to schooling are independent of grade level indeed heterogeneity in any component of schooling choices subjective discount rates ability or specific taste for schooling will lead to improper inference if the local returns are erroneously assumed to be constant as individuals with lower taste for schooling tend to stop school earlier ols or iv estimates of the return to schooling which impose equality between local and average returns at all levels of schooling will be strongly affected by the relative frequencies of individuals with high and low taste for schooling more precisely if there are large differences in local returns between various grade levels the ols estimate measuring an average log wage increment per year of schooling will tend to be biased toward the co editor and three anonymous referees for comments and suggestions on this version or earlier versions belzil thanks the social sciences and humanities research council of canada for generous funding the usual disclaimer applies 2 to use the same terminology as in the reduced form literature the return local to schooling refers to the percentage wage increase per additional year of schooling in the paper the terms local and marginal returns may be used interchangeably the average return refers to the slope of the straight line between the intercept and the expected log wage at a given number of years of schooling 3 a world wide web survey of the most recent literature indicates that since 1970 more than 200 published articles or working papers set in a reduced form have been devoted to the estimation of the return to schooling or surrounding issues very often studies based on iv methods conclude that the returns to schooling can be between 20 and 40 above the ols estimates reported estimates around 15 per year for the us are not uncommon although standard errors are typically very high see card 1999 for a survey 4 manski and pepper 2000 obtain upper bound estimates of the return to schooling from a sample taken from the nlsy their results cast doubts on the high returns reported in the literature

stated and revealed heterogeneous risk preferences in educational choice abstract we develop a structural microeconometric model of educational choice with unobserved heterogeneity in risk aversion and estimate the model parameters using panel survey data we assess the credibility of the model by linking the estimated structural parameters of risk aversion to the self reported willingness to take risks which is directly elicited in the survey the risk aversion parameters revealed from educational choices decrease with the willingness to take risks stated by the survey respondents this indicates consistency between stated and revealed risk preferences we suggest that this method could be applied more generally to support or reject the joint validity of structural models and survey measures of preferences

r d production structure and rates of return in the u s japanese and german manufacturing sectors a non separable dynamic factor demand model abstract the focus of this paper is an analysis of the production structure the demand for factor inputs and the rates of return in the manufacturing sector of three major industrialized countries the united states japan and germany the analysis is based on a dynamic factor demand model with two variable inputs labor and materials and two quasi fixed inputs capital and rd also for all countries the speed of adjustment for capital is found to be higher than that for r d

do risk aversion and wages explain educational choices abstract we study a model in which a student s investment in education maximizes expected utility conditional on public and private information the model takes future wage risk into account and treats the direct and opportunity costs of education as additional sources of risk in particular the time needed to complete a degree is random the data show that time to degree is substantially dispersed conditional on the highest degree we find significant and substantial effects of expected returns on individual education choices the risk affecting education costs and in particular the randomness of time to degree also plays an important role in explaining enrollment in higher education we find precise estimates of the crra risk aversion parameter between 0 6 and 0 9 heterogeneity in risk attitudes is significant even in sub populations the sons of professionals bear more risk and are more risk averse than the rest of the sample yet they study more because of higher returns and markedly lower expected investment costs simulations show a strong impact of changes in the probability of grade retention on educational achievement

investment over the business cycle insights from college major choice this paper examines the relationship between individuals personal exposure to economic conditions and their investment choices in the context of human capital focusing on bachelor s degree recipients we find that birth cohorts exposed to higher unemployment rates during typical schooling years select majors that earn higher wages that have better employment prospects and that more often lead to work in a related field much of this switching behavior can be considered a rational response to di erences in particular majors labor market prospects during a recession however higher unemployment leads to other meaningful changes in the distribution of majors conditional on changes in lifetime expected earnings recessions encourage women to enter male dominated fields and students of both genders pursue more dicult majors such as stem fields these findings imply that the economic environment changes how students select majors possibly by encouraging them to consider a broader range of possible degree fields finally in the absence of this compensating behavior we estimate that the average estimated costs of graduating in a recession would be roughly ten percent larger jel e32 i23 j22 j24

are economic rents good for development evidence from the manufacturing sector abstract are rents or excess profits good for development rents could induce firms to lobby or bribe governments to preserve the status quo on the other hand rents may promote growth by giving firms the needed funds to make investments in fixed capital or research and development to test this question empirically we use a panel of manufacturing data at the industry country year level and measure rents by the mark up ratio we find that the relationship between rents and growth is strongly negative with the results being primarily driven by the poorer countries or those with worse institutions in the sample this result holds when we instrument for mark up using the average mark up in other industries in the country even in industries with high external financing needs and countries with less developed financial sectors precisely the places where excess profits could be used to drive growth we find that rents are especially harmful consistent with the rent seeking mechanism we highlight we find that high rents are associated with a slower reduction in tariffs we also test for the most likely alternative mechanism that higher rents cause slower growth through the channel of allowing managerial slack we find that controlling for management has little impact on our estimate of the impact of mark up on productivity growth

income distribution impacts of climate change mitigation policy in the susquehanna river basin economy we examine the cost side income distribution impacts of a carbon tax in the susquehanna river basin srb region of the united states utilizing a computable general equilibrium model we find the aggregate impacts of a 25 ton carbon tax on the srb economy are likely to be negative but modest an approximately one third of 1 reduction in gross regional product grp in the short run and double that amount in the long run however unlike many previous studies we find that the carbon tax is mildly progressive as measured by income bracket changes per capita equivalent variation and gini coefficient changes based on expenditure patterns the dominant factors affecting the distributional impacts are the pattern of output income and consumption impacts that affect lower income groups relatively less than higher income ones an increase in transfer payments favoring lower income groups and decreased corporate profits absorbed primarily by higher income groups

energy growth conundrum in energy exporting and importing countries evidence from heterogeneous panel methods robust to cross sectional dependence abstract this article uses the panel methods for energy exporting and importing countries that discuss the heterogeneity and cross sectional dependence in investigating the linkages between energy consumption and economic growth the findings of the study suggest that the energy consumption is an important input not only in the energy importing but also in energy exporting countries furthermore the results of the present paper suggest that the policy options should be different for the different countries in the back drop of heterogeneous slope coefficients

survive another day using changes in the composition of investments to measure the cost of credit constraints abstract we introduce a novel empirical strategy to measure the size of credit shocks theoretically we show that credit shocks reduce the value of long term relative to short term investments empirically we can therefore compare the reduction of long term relative to short term investments within firms allowing for firm times year fixed effects using spanish firm level data we estimate the credit crunch to be equivalent to an additional tax rate of around 11 on the longest lived capital to pin down credit constraints as the underlying cause we apply triple differences strategies using foreign ownership or precrisis debt maturity

estimation of the depreciation rate of physical and r d capital in the u s total manufacturing sector i introduction numerous studies on production and cost the sources of productivity and endogenous growth have recognized the pivotal role of the physical capital stock studies at various levels of aggregation over assets and industries have emphasized the crucial role of investment in plant and equipment in the growth of demand and productive capacity it is clearly recognized by economists and policymakers that knowledge capital approximated by rd 1986 to measure the depreciation rates of the stock of rd 1980 in the literature on dynamic demand models such an approach was first adopted by epstein and denny 1980 and more recently by kollintzas and choi 1985 for a single capital good and on a theoretical level in bernstein and nadiri 1987a 1987b the paper is organized as follows the specification of the model is presented in section ii section iii is devoted to a discussion of the data and to the presentation of the parameter estimates of the model in section iv we present the empirical results for the depreciation rates for physical and r d capital and compare them with those reported in the literature we compare the physical capital stock estimates generated by our model with the official capital stock estimates produced by u s department of commerce bureau of economic analysis in this section we also present our estimates of the decomposition of gross investment into replacement and expansion investment for both physical and r d capital these decompositions are important from the vantage point of public policy analysis

good skills in bad times cyclical skill mismatch and the long term effects of graduating in a recession abstract we show that cyclical skill mismatch defined as mismatch between the skills supplied by college graduates and skills demanded by hiring industries is an important mechanism behind persistent career loss from graduating in recessions using norwegian data we find a strong countercyclical pattern of skill mismatch among college graduates initial labor market conditions have a declining but persistent effect on match quality and skill mismatch early in their careers match quality of the first employment may explain up to half of the short term and most of the long term earnings loss from graduating in a recession

international equity and differentiation in global warming policy ne of the major obstacles to reaching a comprehensive agreement on global warming is the setting of greenhouse gas emission reduction targets for individual countries long standing tensions between industrialized and developing countries have raised the issue of equity in burden sharing moreover individual industrialized nations have pleaded special circumstances and have sought differentiation in their obligations this paper analyzes alternative rules for distributing tradable carbon dioxide emissions permits a non linear programming model which distinguishes between allocation based and outcome based rules is used to analyze the relative welfare outcomes the model is applied to the world body of nations and yields several important policy implications

does it pay to attend an elite private college cross cohort evidence on the effects of college type on earnings although a substantial and rising labor market premium is associated with college attendance in general little is known about how this premium varies across institutions of different types and across time in this paper we explicitly model high school students choice of college type characterized by selectivity and control based on individual and family characteristics including ability and parental economic status and an estimate of the net costs of attendance we estimate selectivity corrected outcome equations using data from both the national longitudinal study of the high school class of 1972 and high school and beyond which permit us to determine the effects of college quality on wages and earnings and how this effect varies across time even after controlling for selection effects strong evidence emerges of a significant economic return to attending an elite private institution and some evidence suggests this premium has increased over time

preference for the workplace investment in human capital and gender we use a hypothetical choice methodology to estimate preferences for workplace attributes from a sample of high ability undergraduates attending a highly selective university we estimate that women on average have a higher willingness to pay wtp for jobs with greater work flexibility and job stability and men have a higher wtp for jobs with higher earnings growth these job preferences relate to college major choices and to actual job choices reported in a follow up survey four years after graduation the gender differences in preferences explain at least a quarter of the early career gender wage gap

does affirmative action reduce gender discrimination and enhance efficiency new experimental evidence we investigate experimentally the impact of quota policies on gender discrimination in hiring decisions by testing whether affirmative action increases female employment we also ask whether firm performance is affected by such policies our experiment consists of three treatments in the baseline no quota treatment groups of two employers and six potential job candidates are formed employers have to hire two workers based on information on candidate characteristics including gender and years and subject of study the second low penalty treatment is identical to the baseline except there is a quota such that at least half of the employees hired must be women if this quota is not respected the firm has to pay a penalty the last high penalty treatment is the same as the low penalty treatment except that the penalty is significantly higher we find that women are ranked unfavorably in the absence of a quota and the introduction of a quota significantly reduces gender discrimination firm performance is not affected by the introduction of quotas

life cycle schooling and dynamic selection bias models and evidence for five cohorts of american males this paper examines an empirical regularity found in many societies that family influences on the probability of transiting from one grade level to the next diminish at higher levels of education we examine the statistical model used to establish the empirical regularity and the intuitive behavioral interpretation often used to rationalize it we show that the implicit economic model assumes myopia the intuitive interpretive model is identified only by imposing arbitrary distributional assumptions onto the data we produce an alternative choice theoretic model with fewer parameters that rationalizes the same data and is not based on arbitrary distributional assumptions

capital maintenance and depreciation over the business cycle abstract this paper develops and estimates a stochastic general equilibrium model with capital maintenance which affects endogenously the depreciation rate of capital the estimate of maintenance series is found to track survey based measures for canada quite closely and to generate the procyclical pattern of maintenance observed in the data we use our model estimates to infer the time profile of equipment capital depreciation in canadian and us manufacturing the depreciation rate is estimated to be volatile and highly procyclical in both countries

capacity utilization and depreciation in use in this paper the effect capacity utilization has on the depreciation of capital goods is studied starting from a quadratic approximation to a normalized short run cost function expressions for the optimal rate of capacity utilization the demands for labour and energy and for investment are obtained investment is a function of past capital stock expected future capital stock expected future relative prices and expected future depreciation rates expectations are modelled via instruments the model is tested using us total manufacturing quarterly data depreciation dependent upon usage is found to be both statistically and economically significant

modelling technical change in italian agriculture a latent variable approach this paper presents an alternative approach to the measurement of technical change it is based on the latent variable level of technology that enters explicitly the input demand system and on a hypothesis about the innovation generating process by adding measurement error equations the behavioral system can be viewed as a multiple indicators multiple causes mimic model the parameter estimates are obtained with a maximum likelihood estimator which involves the implicit covariance matrix the analysis refers to italian agriculture and the results provide some evidence on the nature and level of technical change during the years 1961 1991

university choice the role of expected earnings nonpecuniary outcomes and financial constraints we investigate the determinants of students university choice in pakistan with a focus on monetary returns nonpecuniary factors enjoyed at school and financial constraints to mitigate the iden

corporate liquidity and capital structure we solve for a firm s optimal cash holding policy within a continuous time contingent claims framework using dividends short term borrowing and equity issues as controls assuming mean reversion of earnings optimal cash is non monotone in business conditions and increasing in the level of long term debt the model matches closely a wide range of empirical benchmarks and predicts cash and leverage dynamics in line with the empirical literature firm value is quite insensitive to changes in the level of long term debt the model has interesting implications for asset substitution hedging and pecking order growth opportunities do not greatly affect cash holding policy

derivative ideas and the value of intangible assets we build a general equilibrium model where growth is driven by two invention types fundamental ideas that cause creative destruction and derivative ideas that enhance the value of existing inventions the model provides a new mapping from microeconomic patent data to aggregate total factor productivity growth and the aggregate value of privately owned knowledge we show how to measure the frequency of derivative ideas and the rate of creative destruction we estimate that derivative ideas account for 70 80 of all patents and their presence more than doubles the value of knowledge capital relative to what the measured innovation rate might otherwise imply

the us market for so2 permits policy implications of the low price and trading volume abstract the price of so2 permits and the volume of trading under the us acid rain program have been lower than expected this can be explained by the creation and distribution of more permits than were initially authorized by the sale of permits by high cost abaters who are subject to more stringent local emission constraints or who have irreversibly invested in high cost abatement technologies and by the deregulation of the natural gas and railroad industries which in combination with incentives for cost cutting under the new market approach to so2 control has lowered marginal costs of abatement curves and made them more uniform across powerplants the low price of permits and low trading volume are evidence that market approaches to pollution control can be more cost effective than command and control regulations the effect of public policies and technological changes on the allowance market are usefully examined in the context of an ideal market in which the equilibrium price of allowances equals the marginal cost of abatement of individual powerplants using recent data from coggins and swinton 1996 we are able to explain the current price of permits with some accuracy

capital utilization economic growth and convergence abstract optimal decisions by economic agents regarding the utilization of capital lead to empirically plausible speeds of convergence in one sector models of economic growth the relationship between depreciation and capital utilization plays a crucial role in slowing down convergence to the steady state cross country differences in the extent to which the capital utilization decision is internalized along the transition path may lead to differences in convergence rates even for countries with similar initial and terminal conditions finally by assuming a constant depreciation rate and full capital utilization standard growth models may be overstating the magnitude of the steady state equilibrium

estimation of r d depreciation rates a suggested methodology and preliminary application the 2008 version of the sna will recommend capitalization of r d expenditures to implement this recommendation measures for the stock of r d capital must be constructed and this implies a need to determine the depreciation rate of r d capital in this paper we develop a simple model based on a production function method that allows for monopolistic competition to estimate the annual depreciation rate of r d capital we treat r d capital as a technology shifter instead of as an explicit input factor both the r d stock and the time variable are used to capture technological progress modeling r d capital in this manner can better represent the role r d plays in economic growth estimated r d depreciation rates and markup factors are presented for the u s manufacturing sector and four u s knowledge intensive industries namely chemical products sic 28 non electrical machinery sic 35 electrical products sic 36 and transportation equipment sic 37

efficiency in pollution control in the short and long runs a system of rental emission permits efficiency in pollution control in the short and long runs a system of rental emission permits author s robert a collinge and wallace e oates source the canadian journal of economics revue canadienne d economique vol 15 no 2 may 1982 pp 346 354 published by blackwell publishing on behalf of the canadian economics association stable url http www jstor org stable 134787 accessed 05 05 2008 21 07

an estimable dynamic general equilibrium model of work schooling and occupational choice this paper develops and estimates a dynamic general equilibrium overlapping generations model of career decisions the model is fit to data on life cycle employment schooling and occupation decisions and on life cycle labor earnings within and between cohorts observed in the us between 1968 and 1993 based on the estimates of the model the impact of cohort size on skill prices and consequently on career decisions is assessed compared to a baseline case in which cohort size increased at a steady average rate and the fertility process was stationary it is found that the male baby bust generations born in the 1930s and 1940s faced higher skill prices by as much as 2 0 completed college at a higher rate by as much as 0 3 percentage points and worked more over the lifetime by as much as 0 1 years in contrast the males from the baby boom generations born in the 1950s and 1960s faced lower skill prices by as much as 1 5 completed college at a lower rate by as much as 1 0 percentage points and worked less over the lifetime by as much as 0 1 years the impact of cohort size is found to differ across gender due to the differential impact of fertility on the value of home production unlike males the female baby bust generations completed college at a lower rate by as much as 1 5 percentage points and worked less over the lifetime by as much as 0 5 years while the female baby boom generations completed college at a lower rate by as much as 1 5 percentage points and worked more over the lifetime by as much as 0 2 years a tuition subsidy experiment is also performed both in a general equilibrium setting in which skill prices are endogenous and in a partial equilibrium setting with fixed skill prices based on the estimated model a 1 increase in tuition is predicted to reduce college enrollment rates by 1 27 in partial equilibrium consistent with previous estimates and by 1 05 in the general equilibrium case thus for this policy experiment the partial equilibrium analysis of schooling choice would not differ significantly from the general equilibrium analysis

estimates of the value of patent rights in european countries during the post 1950 period this paper examines the distribution of the values of patent rights in the united kingdom france and germany during the post 1950 period these values are inferred from the behavior of patentees with respect to payment of renewal fees on their patents a simple economic model of renewal decisions is combined with data on the proportion of patents renewed at alternative ages and the renewal fee schedules to produce estimates of the distribution and the total value of patent rights in these countries moreover the data indicate that there have been changes in the value distribution and we follow these changes over the period the empirical results of particular interest concern the total value of patent rights and the relationship between changes in it and changes in the quantity of patents the skew in the distribution of patent values and the rate of obsolescence on the returns to patents

labor supply with job assignment under balanced growth abstract we consider a competitive equilibrium growth model where technological progress is embodied into new jobs which are assigned to workers of different skills in every period workers decide whether to actively participate in the labor market and if so how many hours to work on the job balanced growth requires that the job technology is complementary with the worker s total labor input on the job which is jointly determined by his skill and his working hours since lower skilled workers can supply longer hours we show that the equilibrium features positive assortative matching higher skilled workers are assigned to better jobs only if differences in consumption are small relative to differences in worker skills when the pace of technological progress accelerates wage inequality increases and workers participate less often in the labor market but supply longer hours on the job this mechanism can explain why as male wage inequality has increased in the us labor force participation of male workers of different skills has fallen while their working hours have increased

estimating the euler equation for aggregate investment with endogenous capital depreciation this article looks at the empirical consequences of introducing endogenous capital depreciation in the standard neoclassical model with quadratic adjustment costs to this end we formulate an empirical specification that accommodates capital maintenance and utilization in the euler equations for aggregate investment the empirical estimates with data from the canadian survey on capital and repair expenditures show that in contrast to the existing literature the performance of the euler equations is improved when we account for the impact of variable capital depreciation

the effect of emission taxes and abatement subsidies on market structure abstract emission taxes and abatement subsidies are considered to be efficient measures for environment protection the purpose of this paper is to quantify their effects on industry output firm output and on the number of firms in the industry three types of market structure are under discussion perfect competition oligopoly and a dominant firm with a competitive fringe it turns out that emission taxes and abatement subsidies affect the structure of the polluting industry in opposite ways while the effects on industry s emissions are similar in direction but different

educational attainment and the changing u s wage structure dynamic implications on young individuals choices we present a dynamic model of individuals educational investments that allows us to explore alternative modeling strategies for forecasting future wage distributions the key innovation we propose is an approach to forecasting that relies only on the information that would be available at the actual time decisions are made and which incorporates the role of parameter uncertainty into the decision making process we compare the performance of our method with alternative models of forecasting behavior based on cps data over the period 1964 2004

predicted future earnings and choice of college major using data from the national longitudinal survey of young men the author of this paper examines the relationship between predicted future earnings for five broad fields of study and college students choice of major conditional logit models of major choice that incorporate alternative predicted earnings variables are specified and estimated the results indicate that holding family background characteristics constant individuals are likely to choose majors offering greater streams of future earnings rather than as some have argued majors with higher beginning earnings at the time of the choice it is also found that earnings profiles corrected for self selection bias have flattened for more recent graduates in business liberal arts and education the life cycle earnings in these disciplines appear to be more severely depressed than those in science and engineering

the demand for and return to education when education outcomes are uncertain this article treats education as a sequential choice that is made under uncertainty a simple model is used to explore the effects of ability high school preparation preferences for schooling the borrowing rate and ex post payoffs to college on the probability of various post secondary college outcomes and the ex ante return to starting college the model motivates an empirical method of accounting for uncertainty about educational outcomes and for nonlinearity in the relationship between years of education and earnings when estimating the expected return to the first year of college

choice of specialization do peers matter social influence is an important factor in learning and decision making we estimate peer influence on student choice of specialization using data on undergraduate students of a russian university information about individual social ties has been gathered from a questionnaire survey we show that specialization choice is significantly influenced by friends as well as by study partners the strongest effect is produced by friends who are study partners and those who have similar academic achievements reciprocal friendship ties have a stronger influence on the choice than nonreciprocal ones also the decision is affected by classmates with similar academic achievement the results allow us to better understand the mechanisms of peer effects in the specialization choice

net energy analysis in a ramsey hotelling growth model this article presents a dynamic growth model with energy as an input in the production function the available stock of energy resources is ordered by a quality parameter based on energy accounting the energy return on energy invested eroi in our knowledge this is the first paper where eroi fits in a neoclassical growth model with individual utility maximization and market equilibrium establishing the economic use of net energy analysis on a firmer theoretical ground all necessary concepts to link neoclassical economics and eroi are discussed before their use in the model and a comparative static analysis of the steady states of a simplified version of the model is presented

college advising and gender this paper uses a field experiment to identify college advising gender biases five hundred and thirty surveys are randomized over a national sample of practicing advisors such that student gender is the treatment of the experiment i find that advisors discount the ability of female students relative to males by statistically significant magnitudes in both mathematics and english additionally male advisors recommend mathematics with much greater likelihood than do female advisors jel i2 j16

parental beliefs about returns to educational investments the later the better in this paper we study parental beliefs about the returns to parental investments made during different periods of childhood using two independent samples we document that parents perceive the returns to different late investments to be higher than the returns to early investments and that they perceive investments in different time periods as substitutes rather than complements we show that parental beliefs about the returns to investments vary substantially across the population and that individual beliefs are predictive of actual investment decisions moreover we document that parental beliefs about the productivity of investments differ significantly across socioeconomic groups perceived returns to early parental investments are positively associated with household income thereby potentially contributing to the intergenerational persistence in earnings

the timing of redistribution we investigate whether late redistribution programs that can be targeted toward low income families but that may distort savings decisions can dominate early redistribution programs that cannot be targeted as a result of information constraints we use simple two period overlapping generations models with heterogeneous agents under six policy regimes a model calibrated to the u s economy benchmark two early redistribution lump sum regimes two targeted late redistribution regimes and finally a model without taxes and redistribution redistribution programs are financed by a labor tax on the young generation and a capital tax on the old generation we argue that if the programs are small in size late redistribution can dominate early redistribution in terms of welfare but not in terms of real output better targeting of low income households cannot completely offset savings distortions in addition we find that the optimal transfer and tax policy implies a capital tax of 100 and transfers exclusively to the young generation

college selectivity and earnings this article shows that college performance and selectivity have significant effects on earnings it suggests that work that does not include college performance overstates the effect of college se