nash cournot or lindahl behavior an empirical test for the nato allies this paper derives systems of demand equations for distinguishing between nash cournot and lindahl behavior in a group that either shares a pure public good or an activity that provides a private and a pure public joint product systems of simultaneous equations are estimated based upon nash cournot and lindahl behavior for a sample of ten nato allies for the 1956 1987 period nonnested hypothesis tests support the nash cournot specification for five of the ten sample allies no evidence of lindahl behavior is found the nash cournot joint product specification outperforms the pure public model for all sample allies

the baby booms legacy relative wages in the twenty first century the authors assess the baby boom generations impact on relative wages in the united states in the year 2020 time series data for the period 1955 1984 from the mit penn ssrc data bank are used an econometric model of the demand for workers in eight age sex categories is estimated the simulation results indicate that wages of prime age workers will not deteriorate in relation to older workers as a result of the aging of the baby boom cohort conclusions for teens cannot be drawn the general result does not hold for women however prime age women are predicted to lose in comparison with older workers and with men increasing rather than reducing wage differentials by sex ceteris paribus excerpt

gender and wages a cohort study of primary school teachers this study uses cohort data to analyse the observed or gross salary differential between male and female primary school teachers the teachers in this sample who are all employed in state sector schools in the same geographic locality are observed 20 years after first entering the teaching profession the main finding is that two fifths of the differential cannot be explained by gender differences in the levels of experience qualification and mobility within our sample and so is attributed to labour market discrimination and other unobservable gender influences

changing threat perceptions and the efficient provisioning of international security this paper proposes a mechanism for structuring international institutions to efficiently provision global security against the threat of a rogue nation the effects of security effort by an alliance member are assumed to be non rival and non excludable for other members specifically this effort has both positive and negative effects as security measures prevent attacks by the rogue nation but also involves loss of commercial and diplomatic benefits further the alliance members are assumed to have heterogeneous tastes regarding the desired security level the allies act strategically vis a vis one another with regard to security provision and the alliance a whole acts strategically with respect to the rogue nation which strategizes in turn importantly this paper investigates how the evolution of public opinion in the respective countries facing the rogue nation s threat impacts the proposed mechanism

interrupted work careers depreciation and restoration of human capital the quantitative effects and even the existence of a human capital depreciation phenomenon have been a subject of controversy in the recent literature prior work however was largely cross sectional and the longitudinal dimension if any was retrospective using longitudinal panel data on married women in nls we have now established that real wages at reentry are indeed lower than at the point of labor force withdrawal and the decline in wages is greater the longer the interruption another striking finding is a relatively rapid growth in wages after the return to work this rapid growth appears to reflect the restoration or repair of previously eroded human capital the phenomenon of depreciation and restoration is also visible in data for immigrants to the united states however while immigrants eventually catch up with and often surpass natives returnees from the nonmarket do not fully restore their earnings potential

a decomposition analysis of the trend in uk income inequality post war britain has experienced a number of dramatic demographic and social changes that have undoubtedly influenced the distribution of income there has been a rise in the number of pensioners whose incomes are relatively low a considerable increase in the number of young and old households living on their own and a remarkable expansion in the proportion of working wives the potential importance of these structural changes suggests that their impact on the income distribution needs to be examined systematically before any attempt can be made to interpret the observed trend in overall income inequality adequately the method usually adopted for this purpose attempts to create a comparable time series of distributions based on the structural characteristics pertaining in one particular year for example if we wished to investigate the effect of shifts in the age structure of the population this approach would disaggregate the distribution in one year tl and estimate what the distribution would have been like if the age structure had been the same as that observed in some other year to on the assumption that other distributional characteristics such as ageincome differentials and inequality within age groups remain invariant to this demographic change the comparison between the actual distribution at t1 and the constructed distribution at t1 with to s age structure is taken to indicate the impact of changes in the age structure over the period concerned this comparison can be presented in terms of quantile shares summary measures of inequality or the entire lorenz curves this approach known as shift share analysis or standardising the inequality series see semple i975 love and wolfson i976 dinwiddy and reed i977 royal commission i977 rowley and henderson i978 macleod and horner i980 is perfectly adequate for simple and straightforward structural changes when several changes are occurring simultaneously however it becomes difficult to identify the contribution of the individual factors and to assess their relative importance to the overall trend in inequality furthermore the combined impact of several structural influences will not in general sum up to the inequality change requiring explanation the purpose of this paper is to propose an alternative method of analysing

does marriage really make men more productive this paper presents new descriptive evidence regarding marital pay premiums earned by white males longitudinal data indicate that wages rise after marriage and that cross sectional marriage premiums appear to result from a steepening of the earnings profile data from a company personnelfile that includes information on job grades and supervisor performance ratings reveal large marital status pay differences within a narrow range of occupations managers and professionals and environments a single firm married workers tend to be located in higher paying job grades there are very small pay differentials within grades married men receive higher performance ratings than single men as a result they are much more likely to be promoted controlling for rated performance however eliminates the promotion differential sanders korenman is an assistant professor of economics and public affairs at princeton university and is a faculty associate of the office of population research at princeton university and a research affiliate of the national bureau of economic research nber david neumark is an assistant professor of economics at the university of pennsylvania and a research affiliate of the nber korenman wishes to acknowledge the hewlett foundation and the harvard university center for population studies for financial support the authors are grateful to james medofffor making available an extract from the company personnelfile questions regarding data availability should be directed to professor james

taxation and excess burden a life cycle perspective a lifetime perspective is appropriate in assessing the welfare implications of government tax policies although a number of attempts have been made to ex amine the excess burden of taxation in life cycle models these have tended to ignore the role of human capital accumulation and or the leisure income choice in this paper we do numerical simulations with a model that takes both of these phenomena into account we find that under reasonable assumptions the failure to take into account distortions of human capital decisions produces substantial underestimates of the excess burden of income taxation in addition allowing for the endogeneity of human capital increases the efficiency of a personal consumption tax relative to that of an equal yield income tax this abstract was borrowed from another version of this item

the attack and defense group contests best shot versus weakest link this study analyzes a group contest in which one group defenders follows a weakest link whereas the other group attackers follows a best shot impact function if we fully characterize the nash and coalition proof equilibria and show that with symmetric valuation the coalition proof equilibrium is unique up to the permutation of the identity of the active player in the attacker group with asymmetric valuation it is always an equilibrium for one of the highest valuation players to be active it may also be the case that the highest valuation players in the attacker group free ride completely on a group member with a lower valuation however in any equilibrium only one player in the attacker group is active whereas all the players in the defender group are active and exert the same effort we also characterize the nash and coalition proof equilibria for the case in which one group follows either a best shot or a weakest link but the other group follows an additive if jel c72 d70 d72 d74 h41

the effect of cohort size on earnings growth a reexamination of the evidence this study reexamines the effect of cohort size on earnings growth finis welch finds that individuals in larger cohorts experience depressed earnings conditions on entry into the labor market but that their earnings grow at faster rates than in smaller cohorts thus a large portion of the cohort size effect on earnings dissipates after a few years however using data almost identical to those of welch but estimating less restrictive models it is found here that cohort size not only depresses earnings at entry but also seems to slow down early career earnings growth the evidence suggests that earnings ini larger cohorts do not approach normal levels after at brief period in the labor force rather the negative cohort size effect on earnings appears to worsen with experience

distributive implications of an aging society abstract the paper reviews recent research on the impact of an aging population on the distribution of income after briefly discussing the demographic conditions responsible for population aging a short account is given of demographic trends in the industrialized world in order to disentangle the many potential channels by which an aging society affects the dispersion of income several levels of aggregation are distinguished the paper differentiates between intra and intergenerational issues between direct and indirect demographic inequality effects and between the distribution of current and lifetime income it emphasizes the critical role of age related redistributive tax transfer systems like public pension schemes and health care systems sources of distributional policy conflicts are identified at both the cross section level and the lifetime level of income inequality the institutional design of intergenerational burden sharing individual disincentive reactions shifts in age income profiles related to cohort size and politico economic repercussions are shown to drive the relation between population aging and income distribution in distinct and partially opposite ways

dyke maintenance and other stories some neglected types of public goods the orthodox summation model of a pure nonexcludable public good assumes that each individual consumes a quantity of public good defined as the sum of all individuals contributions to that good recently hirshleifer 1983 1985 has analyzed models that do not fall within this class at one extreme is the weakestlink in which the total quantity available to each consumer equals the smallest individual contribution at the other is the best shot in which the total quantity available equals the largest individual contribution hirshleifer s example of the weakest link case concerns a circular region of which each citizen owns a pie shaped slice the perimeter is marked by a dyke floods may penetrate the weakest point of the dyke and cause damage equally throughout the region each citizen decides the height and state of repair of that section of the dyke adjoining his piece of land its maintenance constituting his contribution to the public good thus the level of protection enjoyed by all is determined by the least well maintained section of the dyke an example of the best shot case concerns a number of antimissile batteries ringing a city firing at an incoming icbm all that matters is the accuracy of the best shot bliss and nalebuff 1984 discuss dragon slaying as another example of a best shot situation section ii of this paper introduces a class of functions of which the summation weakest link and best shot are examples section iii analyzes the properties of equilibrium when consumers have identical tastes and incomes section iv analyzes the implications of income redistribution in the summation case the equilibrium is unaffected by the initial redistribution over a range and outside that range transfers help the recipient and hurt the donor within the broader class of models however the invariance property does not generally hold and there may be opportunities for paretoimproving income redistribution i give an example similar to the weakest link case in which a pareto improving redistribution is

economics of alliances the lessons for collective action this essay provides an up to date summary of the findings of the literature on the economics of alliances we show that the study of the economics of alliances has played a pivotal role in understanding and applying public good analysis to real world applications we establish that the manner in which alliances address burden sharing and allocative issues is related to strategic doctrines weapon technology perceived threats and membership composition past contributions are evaluated and areas needing further development are identified the theoretical and empirical knowledge gained from the study of alliances is shown to be directly applicable to a wide range of international collectives

litigation costs and returns to experience we develop a model linking maximum damage awards available to plaintiffs in wrongful termination lawsuits workers propensity to sue as a function of experience and returns to experience using equal employment opportunity commission data on protected worker discrimination complaints and labor market data from the current population survey we examine how returns to experience among protected workers changed around the passage of the civil rights act of 1991 we show that employers reactions to employment protections may induce redistributive effects furthermore these effects operate not merely across groups of differing protected status but also within groups of identical protected status

the triple entente and the triple alliance 1880 1914 a collective goods approach the distribution of burdens in alliances may be explained in terms of public and private outputs a joint product model is applied to the triple alliance and triple entente using generalized least squares auto regressive moving average gls arma techniques and time series data results indicate that countries regarded allies military effort more as complements than as substitutes though several examples of free riding behavior are noted the method used here may provide more accurate estimation of publicness problems than is found in the usual static tests

the trend in the male female wage gap in the united states despite the rise in the feminist movement the enactment of equal opportunity legislation and the rapid increase in women s labor force participation a substantial sex differential in wages has persisted in the united states for at least 4 decades measured by hourly earnings of year round workers this wage gap was 31 in 1955 widened to a 35 37 range by the 1960s and early 1970s and then narrowed to 33 by 1982 this paper examines the extent to which changes in the characteristics of men and women in the labor force and other factors can account for the observed pattern the main finding is that increases in women s labor force participation were initially associated with a declining skill level of employed women relative to employed men where skill is measured by years of schooling and job tenure more recently the work experience of employed women has been increasing which helps account for the recent narrowing trend in the wage gap during the 1970s the wage gap probably woul have narrowed m

women and affirmative action abstract this paper reviews evidence indicating that as it has been enforced so far affirmative action has contributed negligibly to women s progress in the workplace affirmative action can be modeled as a tax on employers whose female employment growth falls below a certain rate clearly if labor supply shifts result in female employment growth greater than the regulatory standard the tax constraint will not be binding as we shall see this may help explain an affirmative action program that is generally ineffective for women although it has been effective for minorities federal anti bias policies in general and the system of affirmative action goals in particular have been accused of instituting employment quotas this paper reviews evidence on the homogenization of the workplace predicted by the quota theory as well as considering more direct evidence on whether affirmative action goals are really quotas in lambs clothing i shall also review the slim evidence on the most fundamental and co

the distribution of the male female earnings differential 1970 1990 the authors examine the male female earnings differential between 1970 and 1990 their objective is to provide consistent estimates that can be compared and interpreted over time and to assess the sensitivity of their results to alternative specifications the authors find that women made modest gains over the period standard decomposition techniques reveal that gender differences in observable characteristics do not explain much of the earnings differential most of the improvement in women s relative earnings has come by a decline in the unexplained component the authors also find that the differential varies systematically across age and education groups and across high and low income women coauthors are dwayne benjamin andree desaulniers and mary grant

demographic change and income distribution this paper examines the interactions between demographic change and income distribution especially in the context of government starting from a simple descriptive life cycle model of individual income this paper established an explicit link between the age composition of a population and the personal distribution of incomes demographic effects on income inequality are derived next 2 income maintenance programs are introduced a redistributive tax transfer scheme and a pay as you go financed state pension system the resulting government budget constraints entail interrelations between fiscal and demographic variables causing an additional indirect demographic impact on the distribution this is shown not only to change but in some cases even to reverse the distributional incidence of demographic trends the superimposition of different age structures on populations of otherwise identical characteristics is non neutral with respect to income distribution disregarding state interventions population aging increases income inequality this result may no longer generally hold if redistribution policies are taken into account the paper provides an example of how indirect demographic effects may lead to a reversal of sign in the absence of any government program a higher ratio of pensioners to active workers raises income inequality in the presence of a redistributive tax transfer scheme and pay as you go financed state pension system a higher dependency ratio decreases income dispersion the restoration of government budget equilibrium induces unintended distributional effects which put the incidence of demographic shifts in a different light varying important aging indicator with realistic forecast bounds leads to inequality fluctuations up to 35 this illustrates the quantitative scale and hence the political importance of demographically caused inequality distortions

economic models of nato abstract the seminal work of olson and zeckhauser 1966 on the economic theory of alliances in particular nato provides the theoretical background for this paper after restating their results on alliance allocation behavior in a formal framework we show that these results may fail in a context with decentralized production of the public defense commodity finally we introduce a simple mechanism which allows the implementation of an efficient allocation characterized by proportional burden sharing and cost monotonicity these results can also be applied to other public goods problems

complementarity free riding and the military expenditures of nato allies abstract this paper examines the major influences of an ally s demand for military expenditures demand equations are estimated for a sample of nato nations using the iterative seemingly unrelated regressions technique evidence is presented indicating that structural changes occured in these equations in the early 1970s this instability is the predicted effect of the doctrine of flexible response adopted by nato during this time period the statistical tests show that the medium sized nuclear powers military expenditures responded identically to income and defense spillins the same held true for the lowland allies

the effects of demographic change on the distribution of wages 1967 1990 a multiple skills model was used to examine the impact of changes in labor force composition on the wage distribution of workers by age sex education and race in the us from 1967 through 1990 the model provided for a higher level of specification than previous studies of wage distribution changes in previous investigations workers were grouped into arbitrary and a priori categories and workers in each category were assumed to be perfectly interchangeable in contrast the multiple skills model assumed that each worker had multiple skills that each skill had a productive value and that each skill was an imperfect substitute for other skills the model further assumed that changes in labor force composition would alter the distribution of skills in the labor force which in turn would produce changes in relative wages analysis revealed that wages of young college educated white and nonwhite males relative to the wages of older college educated white and nonwhite males declined since 1967 and were expected to decline throughout the 1980s in contrast the wages of young high school educated white and nonwhite males relative to the wages of older high school educated white and nonwhite males did not decline since 1967 and were not expected to decline during the 1980s the wages of white females of all ages and of all educational levels relative to the wages of males of all ages and of all educational levels declined throughout the period and were expected to decline in the future nonwhite workers made greater gains in wages since 1967 than white males and this trend was expected to continue through the 1980s however the wages of nonwhite males remained absolutely lower than those of white males by 1985 the wages of nonwhite females were expected to surpass those of white females these findings were similar to those observed in other studies except that other studies failed to detect the differential impact on the wages of high school and college educated males

transfers and the weakest link an extension of hirshleifer s analysis abstract with the weakest link social composition function analysed by hirshleifer it is shown that an incentive exists for some agents to transfer resources to others so as to achieve higher quantities of the public good the characteristics of such an equilibrium with transfers are examined together with the implications of differing income distributions for the quantity of the public good some observations are offered as to how well the model can capture co operative behaviour

the quiet revolution that transformed women s employment education and family the modern economic role of women emerged in four phases the first three were evolutionary the last was revolutionary phase i occurred from the late nineteenth century to the 1920s phase ii was from 1930 to 1950 phase iii extended from 1950 to the late 1970s and phase iv the quiet revolution began in the late 1970s and is still ongoing three aspects of women s choices distinguish the evolutionary from the revolutionary phases horizon identity and decision making the evolutionary phases are apparent in time series data on labor force participation the revolutionary phase is discernible using time series evidence on women s more predictable attachment to the workplace greater identity with career and better ability to make joint decisions with their spouses each of these series has a sharp break or inflection point signifying social and economic change these changes moreover coincide by birth cohort or period the relationship between the development of modern labor economics and the reality of women s changing economic role is explored the paper concludes by assessing whether the revolution has stalled or is being reversed women who graduated college in the early 1980s did not opt out but recent cohorts are too young to evaluate this abstract was borrowed from another version of this item

alternative collective goods models of military alliances theory and empirics i introduction in a seminal article mancur olson and richard zeckhauser 1966 characterized the north atlantic treaty organization nato in the mid 1960s as a group of allies who shared a pure public good in the form of deterrence to qualify as a pure public good a good s benefits must be nonexcludable i e available to all group members once provided and nonrival in consumption i e consumption opportunities associated with a unit of the good do not decline with the number of users pure public goods are characterized by free riding behavior owing to non excludability which permits individuals to partake in the benefits of the good without expending their own scarce resources olson and zeckhauser also demonstrated that a pure public good such as deterrence is associated with an exploitation hypothesis whereby the large agents allies shoulder the payment burdens of the small agents allies using data from 1964 olson and zeckhauser 1966 274 77 established that defense burdens are positively correlated with the economic size of the allies as measured by gross national product gnp over the next twenty five years a large literature has generalized and extended the olson and zeckhauser collective goods theory of alliances van ypersele de strihou 1967 recognized that defense expenditures could generate country specific private benefits e g disaster relief protection of colonies management of domestic unrest along with purely public deterrence with the presence of ally specific benefits the strength of the exploitation hypothesis is attenuated since a small ally might willingly shoulder a relatively large burden provided that this ally views its defense expenditures as possessing a large share of nation specific benefits in a series of articles murdoch sandler and others 1 formulated a joint product model in which the military activity of an ally yields pure public impure public and or private jointly produced outputs or benefits if the benefits derived from the allies military expenditures were from a single purely public good then the joint product model would obviously degenerate to the model of olson and zeckhauser 1966 murdoch and sandler 1984 sandler and forbes 1980 and sandler and murdoch 1990 have shown that the joint product model outperforms the pure public good deterrence model for nato during various time periods in recent years a number of important contributions to the collective good analysis of alliances have appeared these include the inclusion of foreign trade considerations wong 1991 marginal cost differentials among allies mcguire 1990 weber and wiesmeth 1991 leader follower behavior bruce 1990 and median voter considerations dudley and montmarquette 1981 murdoch sandler and hansen 1991 and okamura 1991 mcguire and groth 1985 engineered an econometric procedure for distinguishing between allocative processes e g non cooperative and cooperative within an alliance while subsequent work by sandler and murdoch 1990 operationalized this econometric procedure until now collective good models of alliances have computed alliancewide defense levels by simply summing the allies expenditures however the appropriate manner for aggregating defense efforts among allies may depend on geographical strategic and technological determinants for example the defense efforts of the weakest ally or link along a front may determine the strength of the allies defenses since the enemy s ability to penetrate behind the front hinges on the weakest fortification hirshleifer 1983 in consequence the minimal defense level of the allies and not the sum determines alliance capabilities the purpose of this paper is fivefold first we intend to look at different methods of aggregating allies military expenditures to determine alliancewide defense levels three procedures summation weakest link and best shot are examined

why the gender gap in wages narrowed in the 1980s since 1976 the gender gap in wages on average declined by about 1 per year this article focuses on identifying the factors underlying this trend three data sets are analyzed the current population survey the panel study of income dynamics and the national longitudinal survey we find that convergence in measurable work related characteristics schooling and work experience explains one third to one half the narrowing the remainder is attributable to a relative increase in women s returns to experience as well as to declining wages in blue collar work and other factors

convergence in the gender wage gap in australia over the 1980s identifying the role of counteracting forces via the juhn murphy and pierce decomposition the paper utilises the juhn murphy and pierce 1991 decomposition to shed light on the pattern of slow male female wage convergance in australia over the 1980s the analysis allows one to distinguish between the role of wage structure and genderspecific effects the central question addressed is whether rising wage inequality counteracted the forces of increased female investment in labour market skills i e education and experience the conclusion is that in contrast to the us and the uk australian women do not appear to have been swimming against a tide of adverse wage structure changes

community college enrollment college major and the gender wage gap the literature on the narrowing of the gender wage gap during the 1980s considers among other factors the closing of the male female differential in post secondary education this paper looks specifically at the role played by the dramatic relative increase in women s enrollment in two year colleges with independent cross sections developed using nlsy data the authors find that the gender wage gap narrowed by 0 0469 log points between 1985 and 1990 and by 0 0932 log points between 1989 and 1994 the more pronounced decrease observed for 1989 94 is largely explained by erosion of male female differences in weeks worked job tenure and full time employment a more novel finding is evidence that while change in the quantity of education provides essentially no explanatory power disaggregating education by two year and four year providers and by major field of study accounts for 8 5 11 of the closing of the wage gap over the 1989 94 period

the demand for military expenditures an international comparison earlier studies have explained inter country variations in the share of gnp devoted to military expenditures by international spillovers and by differences in the threat of attack related to relative incomes in this paper we use the theory of public choice to explain these differences we attempt to measure the importance of both international spillovers and relative incomes along with two other factors the tax price elasticity of demand and economies of scale in the consumption of security we find that international spillovers are significant and positive that the income elasticity of demand is greater than unity that the tax price elasticity of demand explains part of observed inter country differences and that there are considerable economies of scale in the consumption of military spending finally between 1960 and 1975 there was apparently a substantial increase in the value which each country derived from a dollar of military spending by its allies this phenomenon which seems related to the increased importance of deterrent weapons has tended to induce individual alliance members to reduce the share of their national income devoted to defense

the impact of unionization on male female earnings differences in canada the impact of unionization on male female earnings differences in canada is analyzed using data spanning 1981 to 1988 a period in which the male female unionization gap narrowed considerably gender differences in union density union wages and nonunion wages are decomposed into characteristics related and discriminatory components we find that the drop in the gender unionization gap prevented an increase of 7 percent in the overall wage differential between men and women also male female earnings differences in the nonunion sector make a substantially larger contribution to the gender earnings gap than do those in the union sector

in search of the glass ceiling gender and earnings growth among u s college graduates in the 1990s gender typical educational choices and the glass ceiling are widely believed to explain why older women earn far less than observably similar men using large panels drawn from the national science foundation s nsf national survey of college graduates and other data representative of u s college graduates from the 1990s the author documents the small role of personal choices and finds evidence contrary to the predictions of both human capital and discrimination models rather than the differential wage growth rates predicted by these models she finds similar average rates of earnings growth for women and men across numerous specifications which suggests that the gender gap in earnings is determined by factors already present early in the career her findings reveal slower earnings growth in only two subsets of women young mothers who experience slower earnings growth during the early career relative to men the same age but then compensate with faster growth later in their careers and women wit

interindustry wage differentials and the gender wage gap using data from the march 1988 current population survey the authors find that the wages of female workers differ significantly by industry even when the analysis controls for workers productivity related characteristics although these interindustry wage differentials are at least as large as men s and are highly correlated with them as well there are statistically significant differences between the two of the overall gender wage gap the average female worker earns about 65 as much as the average male worker 12 22 can be explained by differences between the patterns of interindustry wage differentials of men and women and 15 19 by differences in the distribution of male and female workers across industries thus the combined industry effects explain about one third of the overall gender wage gap

on the stability of age earnings profiles age earnings profiles are compared across three countries japan sweden and the united states dynamic changes in period age and cohort characteristics and permanent differences across countries are discussed observed differences in profiles are explained partly by intertemporal country differences in the labor market situation and partly by institutional differences

estimating the impact of the soviet union s threat on the united states japan alliance a demand system approach an empirical model of the united states japan alliance is presented by employing the linear logarithmic expenditure system to analyze and test the impact of the soviet union s threat on both allies external threats are incorporated into the demand system the empirical results obtained the military buildup by the soviet union affects the preferences of both japan and the united states toward military over civilian goods japan is more sensitive to the soviet union s threat than the united states and the external threat is a more significant factor in affecting the military expenditures of each ally than a change in prices copyright 1991 by mit press

top guns may not fire best shot group contests with group specific public good prizes we analyze a group contest in which n groups compete to win a group specific public good prize group sizes can be different and any player may value the prize differently within and across groups players exert costly efforts simultaneously and independently only the highest effort the best shot within each group represents the group effort that determines the winning group we fully characterize the set of equilibria and show that in any equilibrium at most one player in each group exerts strictly positive effort there always exists an equilibrium in which only the highest value player in each active group exerts strictly positive effort however perverse equilibria may exist in which the highest value players completely free ride on others by exerting no effort we provide conditions under which the set of equilibria can be restricted and discuss contest design implications

an econometric technique for comparing median voter and oligarchy choice models of collective action the case of the nato alliance this paper devises an empirical methodology for discriminating between the median voter model and the oligarchy choice model when applied to the collective provision of a public good in particular an empirical methodology is engineered so that a nested test procedure can evaluate competing models the authors apply this methodology to examine the demand for military activities of ten members of the nato alliance a two stage least squares procedure corrected for autocorrelation is used to estimate the demand equations test results vary some allies abide by the median voter model others by the oligarchy model and still others by neither copyright 1991 by mit press

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

the earnings and employment of nurses in an era of cost containment previous research has shown that from the 1980s through the early 1990s nurses enjoyed substantial wage and employment gains that stemmed to some extent from increased labor demand using individual data for 1988 98 to compare nurses fortunes with those of college educated women and other workers in the health care industry the author documents that nurses experienced a decline in real wages beginning in the early 1990s at the same time that the skill premium for rns as reflected by the return to education and experience was increasing changes in measured characteristics and their returns explain very little of the decline consistent with the theory that the relative wage decrease was driven by a decline in the demand for rns and increased cost constraints the effects of hmo penetration are found to explain only a small part of the variation in wages across metropolitan statistical areas and across time

a structural explanation of recent changes in life cycle labor supply and fertility behavior of married women in the united states abstract this study documents and explains important changes in the life cycle labor supply and fertility behavior of married women in the united states from the 1950s to more recent cohorts the younger cohorts relative to the 1950s supply more labor at earlier stages of the life cycle delay motherhood to later stages without reducing the fertility rate and upon childbearing show a greater tendency to stay out of the labor force in a life cycle model for married couples in which a household makes decisions on fertility as well as labor supply consumption and savings all the behavioral changes are jointly and quantitatively explained by a combination of changes in various labor supply fertility determinants with the increased returns penalties to work non work experience being the dominant contributor the results survive a series of robustness tests including endogenizing education choice and assortative marriage

the price of experience we identify a key role of factor supply driven by demographic changes in shaping several empirical regularities that are a focus of active research in macro and labor economics in particular demographic changes alone can account for the large movements of the return to experience over the last four decades for the differential dynamics of the age premium across education groups emphasized by katz and murphy 1992 for the differential dynamics of the college premium across age groups emphasized by card and lemieux 2001 and for the changes in cross sectional and cohort based life cycle profiles emphasized by kambourov and manovskii 2005 jel d91 e24 i23 j11 j24 j31

social security unanticipated benefit increases and the timing of retirement between 1969 and 1972 real u s social security retirement benefits rose by 20 the rise was unanticipated and followed over 15 years of relatively constant real benefits this paper proposes a model of retirement behaviour in which workers respond differently although in a theoretically consistent manner to the anticipated and unanticipated components of the social security benefit they can receive upon retirement the retirement age decision in the presence of unanticipated benefit changes is shown to be a special case of utility maximization under a nonlinear budget constraint the model is estimated using the longitudinal retirement history survey between 1969 and 1973 real social security benefits for u s workers with fixed earnings histories were raised by more than 20 these increases were the first significant increases in social security since the early 1950 s at the same time that retirement benefits were rising the trend toward early retirement among older american men accelerated in the period from 1965 to 1970 the labour force participation rate of men aged 55 to 64 fell 1 6 percentage points from 84x6 to 83 0 but in the five years after 1970 the rate fell an additional 7 4 points to 75 6 the participation rate of men over 65 fell by 1 1 points in the five years after 1965 but by 5 2 points during the mid 1970 s 1 not surprisingly a large share of this labour force decline has been attributed to the effects of the social security increases enacted in 1969 and 1972 the purpose of this paper is to determine the precise effect of the unanticipated benefit increases on the timing of retirement the effect of social security on the age at retirement has been the subject of lively debate in recent years the literature has been reviewed in two recent papers by mitchell and fields 1982 and hurd 1983 who reach nearly opposite conclusions about the lessons that can be drawn from past empirical research mitchell and fields find that no definite judgment can be reached about the effects of social security on retirement while hurd argues that more careful studies have all found a significant and meaningful effect of social security on early retirement certainly the earlier studies by boskin 1977 and boskin and hurd 1978 found very large social security effects with boskin concluding that the social security system has been the major factor in the explosion in earlier retirement boskin 1977 p 1 very recent studies by burkhauser and quinn 1983 burtless and moffitt 1984 diamond and hausman 1984 fields and mitchell 1984 and hausman and wise 1985 have found smaller social security effects however none of them dealt explicitly with the rapid rise in real benefits during the early 1970 s the approach taken in this paper differs significantly from that in the earlier research just cited the proposed econometric model takes full account of the nonlinear relationship between goods consumption and the age at retirement introduced by social security