reward structures in a planned economy the problem of incentives and efficient allocation of resources this paper considers a reward mechanism for inducing the choice of a socially optimal level of output by a socialist price setting manager under this mechanism the planner is assumed to have no information other than the observed output and price level it thus has informational advantages over other schemes thus far discussed in the literature the other schemes require the additional knowledge of demand elasticities of all the products produced in the economy besides this informational advantage the reward structure suggested here also eliminates other basic weaknesses of those schemes suggested previously

the regulation of multiproduct firms part ii applications to competitive environments and policy analysis abstract this paper extends our companion paper part i laffont and tirole 1990 on the regulation of the rate of return and prices of a multiproduct firm in two directions first it studies optimal pricing by a regulated firm competing with regulated or unregulated rivals with or without market power or other distorted pricing it then focuses on the access pricing problem and its potential foreclosure effects second it shows how optimal pricing can be decentralized to the regulated firm in the absence of cost and demand information

lifetime earnings and the vietnam era draft lottery evidence from social security administrative records errata the randomly assigned risk of induction generated by the draft lottery is used to construct estimates of the effect of veteran status on civilian earnings these estimates are not biased by the fact that certain types of men are more likely than others to service in the military social security administrative records indicate that in the early 1980s long after their service in vietnam had ended the earnings of white veterans were approximately 15 percent less than the earnings of comparable nonveterans copyright 1990 by american economic association

birth rates and the vietnam draft during the vietnam conflict over 8 million americans served in the armed forces and almost 3 5 million were deployed to southeast asia department of veterans affairs the war is considered by some to be the defining event of that generation not just because of the number of troops deployed the largest since the second world war but because of how it affected all men of that generation those who served as well as those who were able to avoid service while a large literature has examined effects of the draft on postwar outcomes for veterans effects of the wartime mobilization on family formation during the time of the conflict have been largely ignored the mobilization led to the absence of a large number of young men from local marriage markets and this shock to sex ratios could have significantly disrupted normal family formation patterns including assortative matching and fertility behavior 1 in this paper we exploit variation across states and over time on vietnam era inductions to analyze the effects of the wartime mobilization on

children and their parents labor supply evidence from exogenous variation in family size although theoretical models of labor supply and the family are well developed there are few credible estimates of key empirical relationships in the work family nexus this study uses a new instrumental variable the sex composition of the first two births in families with at least two children to estimate the effect of additional children on parents labor supply in the united states instrumental variables estimates using the sex mix are substantial but smaller than the corresponding ordinary least squares ols estimates moreover unlike the ols estimates the female labor supply effects estimated using sex mix instruments appear to be absent among more educated women and women with high wage husbands we also find that married women who have a third child reduce their labor supply by as much as women in the full sample while there is no relationship between wives child bearing and husbands labor supply excerpt

regulation by price adjustment the regulatory price adjustment process originally proposed by vogelsang and finsinger has been shown to be vulnerable to strategic manipulation by the regulated firm this article proposes several modifications to that scheme which improve its performance and broaden its applicability inclusion of a monopoly franchise market and the firm s past prices and earnings in the price adjustment constraints are shown to ensure efficient production by the firm and convergence to ramsey prices regardless of the firm s cost structure

subsidizing the stork new evidence on tax incentives and fertility this paper exploits the introduction of a pronatalist transfer policy in the canadian province of quebec that paid up to c 8 000 to families having a child i implement a quasi experimental strategy by forming treatment and control groups defined by time jurisdiction and family type the incentive was available broadly rather than to a narrow population as studied in previous work providing an exceptional opportunity to investigate heterogeneous responses i find a strong effect of the policy on fertility and some evidence of a heterogeneous response that may help reconcile these results with previous estimates

reward structures in a planned economy some difficulties there is an extensive literature on the socially optimal pricing policy for public firms but much less attention has been paid to the vital question of how managers of public firms can be induced to follow such policies the politicians or planners who seek to control a public enterprise will be less well informed about cost and demand functions than the manager and there is no reason to suppose that managers are altruists thus with asymmetrical information and selfish managers there is a significant control problem recently tam 1981 has suggested an ingenious iterative incentive mechanism designed to surmount this problem this note a argues that her negative price incentive scheme npis will not achieve its objective of guiding managers to price at marginal cost2 and b compares npis with variants of the performance index pi proposed by scott 1952 1978 and finsinger and vogelsang 1980a 1981 tam s proposal is that the manager of a public firm be paid a bonus b each period

north south negotiations on emission reductions a bargaining approach this article models north south negotiations on emission reductions where the north provides side payments in exchange for the south s adoption of a more stringent emission standard we find that depending on where firms compete strong asymmetry among regions the two regions different valuations of side payments and climate change damage can produce self enforcing cooperative agreements moreover the south s optimal standard choice can be one of two polar cases i e either the cleanest or the dirtiest irrespective of the continuum of standards available the results above can also hold true when both parties bargain over the south s emission tax

the role of uncertainty and learning for the success of international climate agreements abstract transnational externalities e g transboundary pollution trade contagious diseases and terrorism warrant coordination and cooperation between governments but this proves often difficult one reason for the meager success is the public good character of many of these economic problems encouraging free riding another reason one might suspect is uncertainty surrounding most environmental problems and in particular climate change this provides often an excuse for remaining inactive paradoxically some recent papers have concluded just the opposite the veil of uncertainty can be conducive to the success of international environmental cooperation in this paper we explain why and under which conditions this can be true however we argue that those conditions are the exception rather than the rule most important we suggest a mechanism for those conditions where learning has a negative effect on the success of cooperation which removes this effect or even turns it into a positive effect our results apply beyond the specifics of climate change to similar problems where cooperation generates positive externalities

the effects of child bearing on married women s labor supply and earnings using twin births as a natural experiment we use exogenous variations in fertility due to twin births to measure the impact of an unplanned child on married women s labor supply and earnings although the overall effects of an unplanned birth on labor supply are small we find significant effects in the years immediately following the unplanned birth especially in 1970 we estimate that declining fertility explains between 6 and 13 percent of the increase in married women s labor supply between 1970 and 1980 twin births are also associated with a substantial short run loss in earnings this effect persists longer than the labor supply effects though it does eventually disappear

the regulation of multiproduct firms part i theory abstract this paper develops a normative model of the regulation of a multiproduct firm with private information about its technology and cost reducing activity it first characterizes the optimal regulatory scheme and illustrates it through examples it then derives necessary and sufficient conditions for the pricing incentive dichotomy to hold i e conditions under which the cost reimbursement rule but not pricing is used to provide incentives last the paper studies the regulation of the multiproduct firm in a general equilibrium framework both to assess the validity of the partial equilibrium approach and to formalize the notion of taxation by regulation

going to college to avoid the draft the unintended legacy of the vietnam war between 1965 and 1975 the enrollment rate of college age men in the united states rose and then fell abruptly many contemporary observers e g james davis and kenneth dolbeare 1968 attributed the surge in college attendance to draft avoidance behavior under a policy first introduced in the korean war the selective service issued college deferments to enrolled men that delayed their eligibility for conscription these deferments provided a strong incentive to remain in school for men who wanted to avoid the draft for example the college entry rate of young men rose from 54 percent in 1963 to 62 percent in 1968 the peak year of the draft moreover both the college entry rate and the number of inductions dropped sharply between 1968 and 1973 as the draft was being phased out although these parallel trends are suggestive they do not necessarily prove that draft avoidance raised the education of men who were at risk of service during the vietnam war such an inference requires an explicit specification of the counterfactual what would have happened to schooling outcomes in the absence of the draft in this paper we use trends in enrollment and completed schooling of men relative to those of women to measure the effects of draftavoidance behavior during the vietnam war our maintained hypothesis is that in the absence of gender specific factors such as the draft the relative schooling outcomes of men and women from the same cohort would follow a smooth trend in light of the sharp discontinuity in military induction rates between 1965 and 1970 we look for similar patterns in the relative enrollment rate of men and in the relative college graduation rate of men from cohorts that were at risk of induction during this period

paternity deferments and the timing of births u s natality during the vietnam war i background during the conflict in vietnam men between 18 5 and 25 yr of age were subject to the draft several exemptions to this rule existed for example students were exempt importantly for the purposes of this study married men with dependents could also obtain a deferment from the draft and the particulars of this policy underwent substantial changes in the 1960s in august 1965 president johnson issued executive order 11241 which formally eliminated deferments for childless men who got married after august 26 1965 and in october 1965 the selective service declared that childless married men irrespective of the date of marriage were to be called up both announcements came as a surprise new york times 1965a since married men with children remained exempt the declarations provided a strong incentive for young couples to conceive a first born child before august 1965 marriage had been a sufficient condition for a deferment even just a few hours before the august 26 midnight deadline desperate couples tried to make use of this provision by quickly scheduling their wedding between august and october couples who had missed the deadline had to satisfy an additional condition conceiving a child childless men who got married in this period were still subject to the draft and so had an incentive to conceive a child in october 1965 the risk of induction was further extended to all couples who had remained childless finally in april 1970 the family deferments were entirely eliminated by executive order 11527 the selective service system office of public and intergovernmental affairs 2004 past research has demonstrated that taxes and expenditure programs can affect fertility e g whittington alm and peters 1990 see also milligan 2005 for an excellent review as well as the timing of delivery dickert conlin and chandra 1999 the goal of this article was to provide additional evidence on the responsiveness of childbearing to incentives embedded in public policy by studying a dramatic yet unexamined government intervention the effects of the vietnam war paternity deferments on the decision to conceive a first born child as discussed in the popular press vice president dick cheney s first daughter elizabeth was born 9 mo 2 d after the selective service system announced that childless married men were to be drafted boston globe 2000 slate chatterbox 2004 did draft eligible men strategically react to the announcement and if so how widespread and fast was the response to my knowledge no one has investigated the impacts of the vietnam draft on natality using the vietnam draft rules to identify a causal effect however i build on several prior studies angrist for example uses the exogeneity of the vietnam draft rules to identify the effects of military service on lifetime earnings angrist 1990 angrist and chen 2007 and to measure the racial differences in the value of military service angrist 1991 gullason 1989 and card and lemieux 2001 2002 estimate the effects of the vietnam draft on schooling explicitly recognizing that college attendance often served as a vehicle to avoid the draft both studies find a significant effect of the probability of being drafted on school enrollment the fact that the changes in the selective service rules were both unexpected and widely publicized makes this an ideal example to study the effects of policy on fertility decisions milligan 2005 argues that the assumptions made about the timing of the response to policy are arbitrary since a reaction will be delayed not only by a 9 mo gestational lag but also by the time necessary for the diffusion of information about the change in policy in the case examined here however the criticism seems less relevant newspaper clippings from august 27 1965 suggest that the issuance of the executive order 11241 did receive broad attention for example the story was listed on the front pages of new york times 1965c and washington post 1965b

taxes and the timing of births because the tax savings of having a child are a realized only if the birth takes place before midnight january 1 the incentives for the marginal birth are substantial using a sample of children from the national longitudinal survey of youth we find that the probability that a child is born in the last week of december rather than the first week of january is positively correlated with tax benefits we estimate that increasing the tax benefit of having a child by 500 raises the probability of having the child in the last week of december by 26 9 percent

fertility and the personal exemption implicit pronatalist policy in the united states the personal exemption in the us provides households with an income tax subsidy for each child this paper uses aggregate time series data for the us from 1913 to 1984 to estimate the impact of the tax value of the personal exemption on the aggregate birth rate the empirical results indicate that the personal exemption has a positive and significant impact on fertility and this result is robust to a variety of specifications the us therefore pursues an implicit pronatalist policy through the income tax and the empirical results indicate that the recent tax reform act of 1986 will on average increase this subsidy for fertility authors

the consumption value of schooling an empirical estimate of one aspect the purpose of this paper is to demonstrate by example that human capital is more than just a capital good in the strictest sense of the term certain forms of human capital have consumption value in addition to the value of the increased stream offuture monetary and nonmonetary benefits a methodfor empirically estimating the consumption value of schooling as a vehicle to avoid the vietnam war draft is presented

a mechanism to induce ramsey pricing for natural monopoly firms this paper considers a model with m independent natural monopoly firms it then proposes a taxation subsidy scheme that the regulator can implement to induce the m price setting firms acting independently to jointly adopt ramsey pricing the scheme has the following desirable features 1 the regulator needs only book keeping data on quantities prices and profits 2 the scheme induces cost minimization behaviour 3 the firms will not behave strategically 4 at each step of the convergence process to optimum each firm earns a non negative return and welfare is improved