estimation methods in portfolio selection and the effectiveness of short sales restrictions uk evidence forecasting the mean returns vector and the covariance matrix is a key feature in implementing portfolio theory the performance of the bayes stein method for forecasting these parameters for use in the markowitz model with and without short sales was compared with that of seven other estimation methods and three alternative portfolio selection techniques this paper represents the first large scale empirical investigation of the usefulness of the bayes stein approach using historical data this data was drawn from the london stock exchange in contrast to earlier studies the relative performance of bayes stein was mixed while it produced reasonable estimates of the mean returns vector there were superior methods e g overall mean for estimating the covariance matrix when short sales were permitted when short sales were prohibited actual portfolio performance was clearly improved although there was little to choose between the various estimation methods

women s fertility market work and marital status a test of the new household economics with international data since its emergence from the pioneering efforts of becker 1960 and mincer 1962 the new household economics has inspired a wide range of theoretical and empirical models of demographic behaviour with particular emphasis on fertility female labour force participation and marriage a central principle of these models has been to assign critical roles to the values of men s and women s time in the decision making process in the present paper i adhere to that principle while seeking to contribute to the empirical literature in two important respects 1 the econometric model developed in this paper incorporates several improvements over prior models although women s fertility market work and marital status are closely interconnected their endogeneity has not been fully reflected in previous econometric work 2 in the present model all these demographic variables are endogenous and are subject to a common set of incomes and prices another distinctive feature represents an extension of the approach developed by butz and ward 1979 they used interaction termsmen s and women s earnings weighted by female labour force participation to explain variation in us birth rates here earnings are interacted with the endogenous demographic variables in all equations simulation experiments are used to gauge the total impacts of changes in men s and women s pay under alternative sets of initial conditions 2 for the first time so far as known cross national data are used in a direct test of the new household economics although the literature contains

inflation and world equity selection although much has been written about inflation and stock returns in the united states and the united kingdom little is known about the impact of inflation on a broader menu of countries consistent with previous research examining time series of inflation and stock returns in the united states this study of inflation in 41 developed and emerging equity markets documents a significant negative relation for most countries cross sectional analysis however indicates that inflation as a country attribute commands a positive premium this finding suggests that inflation reveals information about risk exposure supporting the risk interpretation the correlation between a country s inflation rate and the oecd rate of inflation is positively related to the country s equity return correlation with world market returns further equity volatility is positively linked to average inflation rates more than 50 percent of the cross sectional variation in average inflation rates can be accounted for by country cr

can education subsidy reverse falling fertility the case of taiwan abstract the education subsidy in taiwan is available for government employees only in 1996 the government ceased to index the education subsidy for inflation which created a natural experiment ideal for studying the effect of the education subsidy on fertility using the difference in differences approach we find that the reform reduced the fertility probability for public sector households by 17 per cent and this negative response appears to be permanent the estimated probability elasticity of fertility is 0 05 which is smaller than that of personal tax exemption 0 8 the results also suggest that the education subsidy has a heterogeneous effect on fertility across income groups

policy watch the marriage penalty many government programs have implicit penalties or subsidies for marriage for example many couples pay higher income taxes when married than their combined tax liabilities as single filers while many other couples receive a marriage subsidy because their joint taxes fall with marriage likewise most low income couples are eligible for higher welfare benefits if they are separated rather than married this article discusses the marriage penalty with a particular focus on tax and transfer programs why does it exist who faces it to what extent does it affect marriage and labor market behavior what tradeoffs are involved in reducing it

how does parental leave affect fertility and return to work evidence from two natural experiments this paper analyzes the effects of changes in the duration of paid job protected parental leave on mothers higher order fertility and postbirth labor market careers identification is based on a major austrian reform increasing the duration of parental leave from one year to two years for any child born on or after july 1 1990 we find that mothers who give birth to their first child immediately after the reform have more second children than prereform mothers and that extended parental leave significantly reduces return to work employment and earnings also decrease in the short run but not in the long run fertility and work responses vary across the population in ways suggesting that both cash transfers and job protection are relevant increasing parental leave for a future child increases fertility strongly but leaves short run postbirth careers relatively unaffected partially reversing the 1990 extension a second 1996 reform improves employment and earnings while compressing the time between births

love and taxes and matching institutions we study a setting with search frictions in the marriage market and with incomplete contracting inside the family everyone prefers a partner that has high income and is a perfect emotional match but compromises must often be struck a high income earner may abstain from marrying a low income earner even though they would be a perfect match emotionally because the highincome earner may dislike the implicit income redistribution implied by the marriage redistributive income taxation may ease this problem income matching institutions that secure that people largely from the same income groups meet each other can substitute for redistribution so that optimal redistribution is reduced we also introduce a divorce option redistributive taxation is shown both to further and stabilize marriage

is economic growth improving urbanisation a cross regional study of china this study applies a bootstrap panel granger causality test to determine the relationship between urbanisation and economic growth for china we find that the patterns of interaction between urbanisation and economic growth vary across different regions the empirical results show that in urbanisation of the northern coastal region and most of the inland region granger causes economic growth whereas economic growth does not have a significant effect on urbanisation except in the southern coastal region and the inland region one fourth of china s provinces primarily in the southern coastal region do not show a granger causality relationship between urbanisation and economic growth this finding indicates that urbanisation has promoted economic growth by expanding demand and that economic growth s effect on urbanisation is restricted by administrative intervention rather than market mechanisms thus the findings for three fourths of the provinces in china conform to the urbanised economy theory these

objective one funding in the uk a critical assessment gripaios p and bishop p 2006 objective one funding in the uk a critical assessment regional studies 40 937 951 the paper examines several issues that question the underlying basis of uk objective one funding first it is doubtful that the current qualifying regions are appropriate territories over which to apply the eligibility criterion for funding second it is debatable whether gross domestic product gdp gross value added gva per capita should be the only criterion used to justify aid third a lack of statistical reliability implies that there is little confidence that all the current regions are the only appropriate funding recipients finally it is questionable whether funding can have much impact given the extent of underlying structural problems and flaws in the focus of the programme gripaios p et bishop p 2006 le financement au r u selon l objectif i une critique regional studies 40 937 951 cet article cherche a examiner divers problemes qui remettent en question la base

the market model and capital asset pricing theory a note this note shows that a linear market model is sufficient to derive a linear relationship between beta and expected return furthermore the slope of the relationship will be identical with that of the capital asset pricing model if the return on the market portfolio is normally distributed however results from characterization theory suggest that the linear market model assumption is close to that of multivariate normality the market model a common specification of the return generating process for common stocks holds a central place in financial economics this note shows that a linear market model implies the security market line associated with the capital asset pricing model capm of sharpe 18 lintner 6 and mossin 9 however the distributional assumptions implicit in the linear market model are such that the generalization achieved is slight results from characterization theory are used to show that when a linear market model with homoscedastic errors holds for each stock multivariate normality is implied the results in this note have implications for the arbitrage pricing theory apt of ross 12 13 and roll and ross 11 in ross 13 where a single factor model is proposed with the return on the market as the factor a large numbers argument is used which allows the derivation of the security market line without the additional baggage of mean variance theory however given similar assumptions we show here that the same relationship can be derived without the approximation implicit in the apt argument

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

female first marriage in east and southeast asia a kiefer neumann model abstract many studies have shown that schooling levels of husband and wife are important determinants of household behavior in developing countries in this article we ask how the schooling levels of husband and wife come to be associated with each other through the marriage market the kiefer neumann model of labor market search is adapted to marital search the aim being to explain both the positive sorting on education levels for spouses and the positive relationship between female schooling and age at first marriage world fertility survey data for indonesia korea and malaysia are employed in the analyses

for love or money the impact of income taxes on marriage higher sometimes lower than their combined single income tax obligations in this paper we explore the impact of the federal individual income tax as well as other economic and demograplhic variables on the marriage decisionis of individuals using longitudinal data from the panel study on income dynamics for the period 1968 92 we estimate a discrete time hazard model of the time to first marriage we find that the probability of marriage is significantly affected by a range of economic and demographic variables importantly we find that an increase in total income taxes paid by married versus single women has a negative effect on the likelihood of marriage and that the change in the marginal tax rate is also a significant determinant of marriage in some cases in contrast the tax effects are rarely significant in determining marriage probabilities among men although there are some differential responses by race in general the impacts of the income tax variables even when statistically significant are small

will the stork return to europe and japan understanding fertility within developed nations we seek to explain the differences in fertility rates across high income countries by focusing on the interaction between the increasing status of women in the workforce and their status in the household particularly with regards to child care and home production we observe three distinct phases in women s status generated by the gradual increase in women s workforce opportunities in the earliest phase characteristic of the 1950s and 1960s in the united states women earn low wages relative to men and are expected to shoulder all of the child care at home as a result most women specialize in home production and raising children in an intermediate stage women have improved but not equal labor market opportunities but their household status lags women in this stage are still expected to do the majority of child care and household production increasing access to market work increases the opportunity cost of having children and fertility falls female labor force participation increases working women in this phase of development have the strongest disincentives to having additional children since the entire burden of child care falls on them in the final phase of development women s labor market opportunities begin to equal those of men in addition the increased household bargaining power that comes from more equal wages results in much higher if not gender equal male participation in household production female labor force participation is higher than in the intermediate phase the increased participation of men in the household also reduces the disincentives for women to have additional children and fertility rates rise compared to the intermediate phase the intermediate low fertility phase might describe japan italy and spain in the present day while the scandinavian countries the netherlands and the modern day united states may be entering the final phase after presenting the empirical evidence we predict that high income countries with the lowest fertility rates are likely to see an increase in fertility in the coming decades

policy review section in this policy review section gerry stoker of the institute of local government studies presents a critical review of the role of urban development corporations udcs in comparing the experience of the udcs consideration is given to the varying nature of the land and property market in each udc area to the relationship with local authorities and other local bodies and the regeneration strategies pursued by the udcs this is followed by an assessment of the impact of the udcs in economic social and political terms in the second article john britton of the university of toronto examines the theoretical case for interventionist public policies to assist the innovation process in small and medium sized enterprises these arguments are supported by a review of the experience of various national support programmes introduced in the uk in particular the manufacturing advisory service introduced in 1978 and the design advisory service launched in 1982

bayes stein estimation for portfolio analysis in portfolio analysis uncertainty about parameter values leads to suboptimal portfolio choices the resulting loss in the investor s utility is a function of the particular estimator chosen for expected returns so this is a problem of simultaneous estimation of normal means under a well specified loss function in this situation as stein has shown the clas sical sample mean is inadmissible this paper presents a simple empirical bayes estimator that should outperform the sample mean in the context of a portfolio simulation analysis shows that these bayes stein estimators provide significant gains in portfolio selection problems

a dynamic globally diversified index neutral synthetic asset allocation strategy an investor with the ability to assess the prospective return and risk structure of the global capital markets can construct portfolios that over time will not only outperform actively or passively managed domestic asset portfolios but will also outperform passively managed global portfolios a bayesian approach to dynamic seemingly unrelated regression dsur is a robust and effective means to forecast the one step ahead conditional distribution of asset returns this approach recognizes the time varying nature of the global capital markets the predictive moments are used to derive a single factor return model once an index portfolio is specified the index portfolio represents an investor s underlying portfolio given the factor model that assesses the relative attractiveness and risk of the assets in relation to the index an index neutral portfolio is constructed as an overlay to enhance the returns of the index portfolio this portfolio is mean variance optimal is notional neutral i e the sum of the asset exposures is zero and has returns that are designed to be uncorrelated with the returns of the index portfolio the implementation of such an index neutral portfolio using derivative securities is simulated over the period january 1988 to december 1993

defence spending in the u k regions short j 1981 defence spending in the u k regions reg studies 15 101 110 this paper traces the incidence of defence expenditure in the regions of the united kingdom over the years 1974 1975 1977 1978 inclusive it examines contracts with industry and the expenditure resulting from the deployment of ministry of defence manpower this paper shows that significant differences exist between the levels of defence expenditure in the regions reflecting these two factors it concludes that the scope for using defence expenditure to influence regional income and employment is limited

military prime contracts and taxes in the new york metropolitan region a short run analysis warf b and cox j c 1989 military prime contracts and taxes in the new york metropolitan region a short run analysis reg studies 23 241 251 this paper examines the impacts of military prime contracts awarded to firms in the new york metropolitan area emphasizing its predominantly service sector orientation input output analysis is used to compute the short run impacts of prime contracts and the associated federal personal and corporate income taxes collected to finance them the gross and net impacts on employment output and incomes in new york city its suburbs in new york state and northern new jersey are reviewed with regard to the industries positively and negatively affected finally the distribution of employment by occupational groups is analysed demonstrating that prime contracts generate few white collar jobs and relatively large numbers of blue collar ones warf b et cox j c 1989 les premiers contrats militaires et les impots dans la zone metropolitaine de new york une analys

german income taxation and the timing of marriage i investigate how the german income tax code affects the timing of marriages the german income tax code allows married couples to benefit from full income splitting relative to unmarried couples

taxes and marriage a two sided search analysis this article analyzes the effects of differential tax treatment of married and single individuals in the united states on marriage formation and composition divorce and labor supply we develop a marriage market model with search frictions and heterogeneous agents that is sufficiently rich to capture key elements of the problem under consideration we then calibrate the model and use it to evaluate the quantitative effects of several tax reforms aimed at making the tax law neutral with respect to marital status we find that these reforms i systematically increase the labor supply of married females with changes ranging from 0 3 to 10 1 percent ii have substantial effects on the correlation of spouses incomes which changes from 0 2 to values between 0 185 and 0 334 iii can lead to either an increase or decrease in the fraction of people married with changes that range from 0 6 to 2 4 percent

chinese urbanization and development before and after economic reform a comparative reappraisal abstract this paper analyzes the recent process and consequences of china s urbanization by weighing the short term policies and long term strategies concerning national development and urban growth against the objective material conditions and competing group interests in chinese society comparative insights are drawn from the experiences of other late developing countries where the effects of political decisions concerning urban growth have been fundamentally modified by social and economic forces thus china s urbanization is examined here in terms of the four major aspects of third world urbanization overurbanization urban bias and the parasitic versus generative nature of cities rural development and the role of small urban places and interregional balance in urbanization and development the rapid and complex process of urbanization certainly helps boost the dynamic of the post mao chinese economy but not without the problematic symptoms of congestion and inequality

schooling search and spouse selection testing economic theories of marriage and household behavior the implications of the economic theories of marriage and of household fertility behavior are tested in a framework in which educational investment marital search and marital matches are responsive to marriage market conditions and the personal traits of individual agents some of which are unobserved by the econometrician implications are also derived and tested for the effects of longevity attractiveness preferences and labor and marriage market conditions on schooling marriage age and spouse choice the empirical results indicate that inattention to heterogeneity and martial selection leads to a false rejection of the economic theory of marriage but to a false acceptance of the value of time fertility hypothesis

the pricing of capital assets in a multiperiod world abstract this paper proposes a general framework for the pricing of capital assets in a multiperiod world under quite general conditions the analysis shows that the equilibrium expected nominal return on any asset can always be expressed as the sum of the risk free rate and various risk premiums the first risk premium is identical to the usual risk premium in the sharpe lintner mossin capital asset pricing model the mathematical forms of all the remaining risk premiums are identical even though each individual risk premium may be present for a different reason

the effect of tax transfer policies on fertility in canada 1921 88 this paper estimates the effect on fertility of the personal tax exemption for children child tax credit family allowances and maternity leave benefits in canada using time series data from 1921 to 1988 it is found that the exemption child tax credit and family allowances all have significant and positive effects on fertility the results are robust to a variety of specifications including first differencing while the three tax transfer programs seem to be very distinct the null hypothesis that they have no differential effects on fertility can hardly be rejected all the results also hold for the cumulative effect of the three tax transfer programs the estimates predict that a large increase in the value of the tax transfer programs would be needed to increase fertility to the replacement level

the effects of social security on population and output growth in this paper we have considered two unfunded social security programs under the conventional system benefits are related to aggregate fertility under the hypothetical fertility related system benefits are directly linked to individual fertility the effects on fertility and per capita growth rates of the two social security systems are examined in the context of endogenous growth the relative merits of the two systems for developing and developed countries are considered the authors conclude that the conventional social security system existing in many developed nations may be desirable to developing countries in reducing population and promoting economic growth on the other hand the hypothetical fertility related system may be useful to developed countries as far as increasing fertility is concerned

the time variation of risk and return in the foreign exchange and stock markets this paper attempts to determine whether the fluctuations of conditional first and second moments which are observed for many assets are consistent with the sharpelintner mossin capital asset pricing model we test the mean variance model under several different assumptions about the time variation of conditional second moments of returns using weekly data from july 1974 to december 1986 that include returns on a portfolio composed of dollar deutsche mark sterling and swiss franc assets together with the u s stock market the results indicate that estimated conditional variances cannot explain the observed time variation of risk premia rates of return on international financial assets are characterized by statistical properties that are quite common to all financial markets they are highly volatile and largely unpredictable these properties make it very difficult to extract statistically reliable estimates of systematic exchange rate and assetprice movements and are at the root of the generally poor empirical performance of international asset pricing models nevertheless two important results have been uncovered by empirical researchers and can be considered a fair characterization of the data a expected returns on foreign assets vary over time cumby and obstfeld 1981 and the numerous articles that followed recently surveyed by frankel and meese 1987 b the volatility of returns of foreign assets also changes over time cumby and obstfeld 1984 hodrick and srivastava 1984 and hsieh 1988 among others as giovannini and jorion 1987 suggest the

fertility and the size of the u s labor force this paper reviews and interprets from an economic perspective the demographic trends in the u s since the turn of the century the primary focus will be upon the interplay between the fertility and labor force participation of women and how they may be interpreted within simple economic models we will begin by stating what economic demography is and why careful analytic methods are needed section ii provides a brief demographic history of the u s section iii describes the major economic theories of fertility and section iv discusses the empirical performance of these theories section v discusses the linkages between fertility and the size of the labor force and section vi concludes excerpt

an asset pricing theory unifying the capm and apt this study shows that the competitive equilibrium version of the arbitrage pricing theory may be extended to develop an exact mode l if idiosyncratic risks obey the ross separating distribution the r esults indicate that one only need add the market portfolio as an ext ra factor to the factor model in order to obtain an exact asset prici ng relation the empirical arbitrage pricing theory is also general ized to allow for some factors to be omitted from the econometric m odel employed to test the theory the importance of the market portfo lio is shown to be a monotonic increasing function of the number of o mitted factors copyright 1988 by american finance association

the role of inward investment in urban economic development the cases of bristol cardiff and plymouth this paper examines the role of manufacturing and services foreign direct investment fdi in the restructuring of the three large cities in the south west and wales bristol plymouth and cardiff key differences in the fdi stock of each city are analysed with special attention given to location rationale and quality of investments bristol is found to be comparatively successful in attracting high grade manufacturing regional service centres of manufacturing companies and financial and computer services firms location and policy influences have meant that cardiff and plymouth have been more dependent on production only facilities and plymouth in particular has had difficulty attracting financial and business services investment policy and practical ramifications of the study are explained

metropolitan development in a transitional socialist economy spatial restructuring in the pearl river delta china the dynamic of globalisation and urban change in europe and north america has been extensively documented relatively little is known about the processes and consequences of spatial restructuring in metropolitan regions within the context of a transitional socialist economy this study investigates economic restructuring and spatial transformation in one of the most dynamic metropolitan regions in china deregulation of the post reform socialist central state has allowed chinese peasants to diversify agricultural production and to industrialise the rural economy according to various personal strengths and the changing market demand despite the rapid commercialisation and industrialisation of the regional economy there has been no growing concentration of population and production facilities in large cities the loci of accelerated economic growth increased population mobility and massive land use transformation have been in the intermediate zones surrounding and between metropolitan centres rapid expa

the fertility effect of dependent tax exemptions estimates for the united states the effect of the dependent tax exemption on the fertility rate in the united states is estimated the estimation is an improvement on previous work in that a non linear specification is used to better capture the shape of the demand for children it is found that the marginal effect of the dependent exemption decreases with the level of the exemption this suggests that although subsidies for childbearing will increase fertility it becomes increasingly difficult for countries to increase fertility through this type of scheme

high technology industry in the bristol sub region the aerospace defence nexus boddy m and lovering j 1986 high technology industry in the bristol sub region the aerospace defence nexus reg studies 20 217 231 this paper presents a detailed study of high technology industry in the bristol region which comprises an important element of the uk s m4 corridor growth area high technology industry in the region is found to be primarily identified with the aerospace industry in terms of both products process and occupational structure aerospace is central to high technology industry as a whole in terms of sub contracting and purchasing and through its domination of the labour market the origins of the electronics based aerospace sector are traced in the development of the aircraft and guided weapons industries as they related to the bristol sub region in the post war period this indicates the key role of defence related production and ministry of defence procurement to the genesis and continuing importance of the advanced technology sector in the sub region demonstratin

international asset pricing with time varying risk premia abstract recent empirical evidence that forward exchange rates are biased predictors of future spot rates can also be interpreted as evidence against the hypothesis of a constant risk premium consequently reconciliation of this evidence with efficient international capital markets requires the existence of time varying risk premia this paper modifies kouri s 1977 asset pricing model to allow time varying exected returns on assets eliminates the assumption of a risk free real asset and derives the characteristics of the risk premia in the forward market as well as the equilibrium yield relationships among the equities and riskless nominal bonds of all countries

exchange rate uncertainty forward contracts and international portfolio selection in this paper ex ante efficient portfolio selection strategies are developed to realize potential gains from international diversification under flexible exchange rates it is shown that exchange rate uncertainty is a largely nondiversiflable factor adversely affecting the performance of international portfolios therefore it is essential to effectively control exchange rate volatility for that purpose two methods of exchange risk reduction are simultaneously employed multicurrency diversification and hedging via forward exchange contracts the empirical findings show that international portfolio selection strategies designed to control both estimation and exchange risks almost consistently outperform the u s domestic portfolio in out of sample periods since grubel 11 applied modern portfolio theory mpt to international investment various authors such as levy and sarnat 17 solnik 20 and lessard 16 have examined the gains from international diversification of investment portfolios for the purpose of establishing the gains from international diversification these studies constructed international portfolios using historical risk and return data from a period of fixed or relatively stable exchange rates and showed that internationally diversified portfolios dominated purely domestic portfolios in terms of mean variance efficiency from the standpoint of today s investors however the previous studies fail to offer operational guidance for international diversification for two important reasons first it is now questionable whether the past findings are still relevant under the current flexible exchange rate regime second by being ex post in nature the past studies ignored the issue of estimation risk or parameter uncertainty and therefore may have overstated the realizable portion of the potential gains from international diversification fluctuating exchange rates are likely to mitigate the potential gains from international diversification by making investment in foreign securities more risky as will be shown later a fluctuating exchange rate contributes to the risk of foreign investment not only through its own variance but also through its positive covariances with the local stock market returns during our sample period of 1980 through 1985 for example exchange rate volatility is found to account for about fifty percent of the volatility of dollar returns from investment in the stock markets of such major countries as germany japan and the u k furthermore the exchange rate changes vis a vis the u s dollar are found to be

fertility and the personal exemption comment one of the most commonly cited studies on the effect of child subsidies on fertility whittington alm and peters 1990 claimed a large positive effect of child tax benefits on fertility using time series methods we revisit this question in light of recent increases in child tax benefits by replicating this earlier study and extending the analysis we do not find strong evidence to justify the model specification from the original paper moreover even if the original specification is appropriate we show that the results are not robust to more general measures of child tax benefits jel h24 j13

taxes and transfers their effects on the decision to end a marriage abstract the transfer system typically has large marriage disincentives while the income tax system is likely to subsidize marriage for many low income families in other words the tax system may offset an increase in transfer benefits associated with marital separation the interaction of the transfer system with the income tax system has largely been overlooked the income tax system has become more relevant for low income families with the recent expansion of the earned income tax credit which filers may be eligible for even if their tax liability is zero this paper uses family level measures of the change in transfer benefits and tax liability associated with a change in family structure to consider the effect of these financial incentives on separation decisions

will you civil union me although the tax system is not marriage neutral in many countries it has been found to be only slightly significant in determining marriage decisions buffeteau and echevin 2003 alm and whittington 1995 this paper tests whether the tax system can alter the decision to contract a civil union which is less binding than a marital contract in 1999 france introduced civil union pacs as an alternative legal union to marriage i assess the impact of taxation on the decision to contract a pacs using a difference in differences evaluation of the 2005 income tax reform for newly pacsed couples as the control group is contaminated by the reform i propose an original estimation method based on a difference in differences in differences setting to estimate bounds to the impact of the reform my results find a positive and increasing impact of taxation on pacs rates but also a change in the timing of pacs unions suggesting that taxation alters the decision to contract a pacs in addition i find a slightly significant impact of taxation on the decision to terminate a pacs

new technology and regional development in austerity britain the case of the semiconductor industry cooke p morgan k and jackson d 1984 new technology and regional development in austerity britain the case of the semiconductor industry reg studies 18 277 289 britain s poor economic performance is partly a reflection of low levels of investment in new technology and a consequent failure to innovate in many sectors recent government policies have sought to shift industrial expenditure priorities towards stimulating innovation regional aid is one heading under which such recomposition is being effected it has been used in parallel with specific sectoral aids to establish an indigenous semiconductor production presence in britain however there is evidence that foreign firms have taken advantage of such aid to establish production rather than innovation facilities

population aging class context and age inequality in public spending although recent experiences in the united states suggest that population aging for both demographic and political reasons favors public spending for the elderly relative to children many european nations with different political environments show no shuch pattern this paper investigates age inequality or bias in public spending for these two age based dependent groups using annual time series data for 18 advanced industrial democracies the results show that a large aged population reduces age inequality in favor of the eldearly in the presence of 1 class based corporatism and 2 strong leftist parties whereas a large aged population increases age inequality in the absence of these two factors

anti poverty policy for families in the next century from welfare to work and worries this paper reveals that recent changes in social policy have included both sharp cutbacks in welfare for non working families and dramatic increases in supports for low income working families it explores the reasons for these changes and documents how they have radically changed work incentives for some persons notable single mothers the result has been a large increase in work by low wage single parents the paper concludes by examining several potential dangers of this new direction and explores the challenges that remain for the next century

tests of asset pricing with time varying expected risk premiums and market betas tests of asset pricing models are developed that allow expected risk premiums and market betas to vary over time these tests exploit the relation between expected excess returns and current market values using weekly data for 1963 through 1982 on ten common stock portfolios formed according to equity capitalization a single risk premium model is not rejected if the expected premium is time varying and is not constrained to correspond to a market factor conditional mean variance efficiency of a value weighted stock index is rejected and the rejection is insensitive to how much variability of expected risk premiums is assumed financial economists have studied valuation models in which securities expected returns are related to the covariances of unanticipated returns with the return on the market portfolio or with other risk factors empirical tests of such models typically have employed unconditional sample moments of returns recent studies provide mounting evidence that expected returns change over time with information such evidence presents an opportunity to develop new approaches for evaluating and implementing asset pricing models that exploit this time variation this paper presents new tests of financial valuation models in which expected returns are allowed to vary over time time series of relative

currency hedging for international portfolios this paper examines the benefits from currency hedging both for speculative and risk minimization motives in international bond and equity portfolios the riskreturn performances of globally diversified portfolios are compared with and without forward contracts over the period 1974 to 1990 inclusion of forward contracts results in statistically significant improvements in the performance of unconditional portfolios containing bonds conditional strategies are also implemented both in sample and out of sample and are shown to both significantly improve the risk return tradeoff of global portfolios and to outperform unconditional hedging strategies whether international portfolios should be hedged against currency risks is the subject of an active debate the theoretical side of the debate has been closely associated with two strands in the academic literature international asset pricing and optimal hedging in the futures markets in the international asset pricing model iapm of solnik 1974 optimal portfolios contain positions in forward contracts or equivalently foreign currency denominated bills these positions which can differ from the positions in foreign stocks have since been termed hedges black 1990 shows that under additional assumptions the hedge ratios should be identical for all investors regardless of their nationality universality and that investors should never fully hedge their foreign currency exposures similarly theoretical models from the futures literature produce demands for hedging instruments that contain both speculative and hedging components the empirical issue unanswered so far is whether adding forward contracts to international portfolios significantly improves the risk return profile of global investments empirical research has barely begun to respond to the challenges of theoretical models there exists little empirical evidence on either the relevance of black s universal hedge ratios or the optimality of hedge ratios less than one instead researchers have concentrated on the benefits of fully hedging exchange risk for example eun and resnick 1988 indicate that stock portfolios perform better when fully hedged but offer no statistical tests

marital status and fertility in the united states welfare and labor market effects the incidence of marriage and the proportion of childbearing that occurs within marriage have decreased sharply in the united states in the last several decades this paper examines whether the probability that a woman is currently married and the number of children she has borne as reported in the 1980 u s census are related to two identifiable factors the variation in welfare programs across states specifically afdc and medicaid benefits and afdc up expenditures or the variation in the market wage opportunities available to women and to their potential husbands afdc and medicaid benefit levels are associated with fewer women being currently married medicaid benefits are related to lower fertility levels for both black and white women whereas afdc benefits in cash and food are associated with lower fertility among white women ages 15 24 those states that extend afdc benefits to families with unemployed parents in other words fathers in intact poor families do not have significantly more women married or higher fertility rates contrary to what might be expected from economic incentives men s market wages are associated with more frequent marriage and higher fertility whereas higher market wage opportunities for women have substantial effects in the opposite direction all of which are consistent with standard models of gender specialization and the demand for marriage and fertility

regularities in the growth of high technology industries in regions abstract this paper aims to identify regularities in the growth of high technology industries in regions or synonymously regional high technology abbreviated as rht hereafter re viewing past studies a number of hypotheses as to what affects the growth of rht are presented and examined by various statistical methods a hypothesis on the self reproductive effect is supported most strongly the relationship of the self reproductive effect with the cumulative advantage effect is discussed as policy implications of the analyses it is advised for local governments 1 to base short term rht policies on the present state of rht or more specifically to expand currently forte fields of ht toward the specialisatin among regions instead of the current trend that every region follows the same rht policy and 2 to maintain or improve intellectual potential in the regions for long term rht policies or more specifically to improve middle education and to form a regional cultural policy rather than costly investment for science technical universities or public r d institutes

a critical assessment of the evaluation of eu interventions for innovation in the sme sector in wales in this paper the eu structural fund intervention framework is critically assessed in an effort to reflect on the problems faced by policy makers when trying to make sense of the complexity associ

are children really inferior goods evidence from displacement driven income shocks abstract this paper explores the causal link between income and fertility by analyzing women s fertility response to the large and permanent income shock generated by a husband s job displacement i find that the shock reduces total fertility suggesting that the causal effect of income on fertility is positive a model that incorporates the time cost of children and assortative matching of spouses can simultaneously explain this result and the negative cross sectional relationship i also find that a husband s displacement accelerates childbearing which is consistent with lifecycle models of fertility in which the incentive to delay is driven by expected earnings growth

redistribution fertility and growth the effect of the opportunities abroad abstract this article analyzes the effect of the opportunities abroad on the growth path that a small open economy in which redistribution policy in favor of less prosperous segments takes place is expected to follow the model shows that redistribution policy raises fertility among the unskilled recipients lowers fertility among the contributing skilled slows human capital accumulation and reduces per capita output growth the paper demonstrates that the opportunities abroad determine the share of income redistributed and ultimately induce the offspring of the unskilled to invest in human capital and decrease their family size

derivation of the capital asset pricing model without normality or quadratic preference a note derivation of the capital asset pricing model requires various assumptions including normality or quadratic preference the objective of this note is to show that the normality or quadratic preference assumption can be replaced by the fair game condition that assets residual returns have zero mean conditional upon the return of the market portfolio

between development and social policies the impact of european structural funds in objective 1 regions rodriguez pose a and fratesi u 2004 between development and social policies the impact of european structural funds in objective 1 regions reg studies 38 97 113 european regional support has grown in parallel with european integration the funds targeted at achieving greater economic and social cohesion and reducing disparities within the european union eu have more than doubled in relative terms since the end of the 1980s making development policies the second most important policy area in the eu the majority of the development funds have been earmarked for objective 1 regions i e regions where gdp per capita is below the 75 threshold of the eu average however the european development policies have come under increasing criticism based on two facts the lack of upward mobility of assisted regions and the absence of regional convergence this paper assesses using cross sectional and panel data analyses the failure so far of european development policies to fulfil their objective of de

did expanding the eitc promote motherhood during the 1990 s the earned income tax credit eitc emerged as a primary means of providing income support for low income families in the united states in an effort to keep the program well targeted the credit largely restricts eligibility to tax filers with children one potentially unintended consequence of this design is that it might encourage childbearing we raise the question of whether the eitc through its generous benefits to families with children actually increases fertility we approach this topic for three reasons the first is to expand upon an existing literature of economic incentives and fertility using the eitc expansion as a large exogenous variation in the price of childbearing findings in the welfare literature are inconclusive robert a moffitt 1998 and the income tax literature typically finds small but statistically significant effects of the income tax system on fertility behavior e g leslie a whittington et al 1990 second declining fertility rates in many western counties raise the general issue of whether the tax system can be used as a tool for encouraging fertility finally by considering the link between the eitc and fertility we question a common yet untested assumption in the literature on the eitc and the labor supply of single parents that the presence of a child is exogenous to the value of the eitc

structural estimation of marriage models a structural approach is used to examine who matches with whom a two sided matching model that allows for marital sorting in response to marriage market flexibility and agents preferences is utilized estimation is based on imbedding the numerical solution of a matching model within a maximum likelihood procedure results indicate that wage is more desirable than education in predicting marriageability for white men education is more desirable for black men the marriage market for white men is more flexible both marriage market flexibility and the chance of being classified correctly using agents wage and education decrease with age for white men

search models and applied labor economics individual effects in a nonlinear model explicit treatment of heterogeneity in the empirical job search model this paper extends the empirical version of a job search model to permit heterogeneity in the location of wage offer distributions population variance in wage offers is decomposed into variance due to heterogeneity and variance facing each individual heterogeneity is found to be an important source of offer variance in the population the amount of pure wage offer dispersion facing individuals is found to contribute little to population variance

til death or taxes do us part the effect of income taxation on divorce there is now much empirical evidence that economic incentives affect the divorce decision via their impact on the flow of benefits of divorced vs married individuals however the effect of the individual income tax on divorce has been neglected in this work the income tax in the us is structured so that tax liability often changes with marriage some couples incur a marriage penalty in the form of higher taxes when they marry while others receive a marriage subsidy because their tax burden falls with marriage in this paper the authors examine the impact of the individual income tax on the likelihood of divorce in the us using data from the panel study on income dynamics they estimate a discrete time hazard model of the probability of divorce from the first marriage to test the hypothesis that the probability of divorce rises with the marriage penalty they also examine the role of other economic factors in the divorce decision the authors find that individuals respond to tax incentives in their decision to divorce although these responses are typically small and differ for men and women authors

testing the neoclassical model of family labor supply and fertility the mcelroy horney nash bargaining model of family demand behavior relaxes the restriction that nonearned income of husband and wife has the identical effect on family labor supply and commodity demands this restriction of the neoclassical model offamily behavior is tested for the determination of husband and wife labor supply andfertility based on the 1981 socioeconomic survey of thailand the neoclassical restriction is rejected for female labor supply andfertility another unexplored limitation offamily demand studies due to the sample self selection of intact marriages is empirically treated through alternative estimation strategies in this case a more sharply focused theory of marital behavior is needed to identify family demand models

performance of currency portfolios chosen by a bayesian technique 1967 1985 abstract this paper is about normative currency portfolio rules it assumes logarithmic investors who maximize the expected utility from lognormal currency returns with and without short sales restrictions a number of implementable portfolio diversification policies are tried out on a large body of data covering nine major currencies and eighteen years of weekly observations in doing so we present ways of dealing with the estimation risk in an international context the necessary mean and covariance inputs are provided by a bayesian prior on the means and by sample means and covariance matrices which are estimated from weekly sample data while some policies do produce abnormal returns over and beyond proper reward for risk none does so in a statistically significant way this means that the evidence does not allow one to conclude that market participants are improperly diversified as a byproduct of this investigation techniques are found which would allow portfolio managers to earn a proper reward for risk by following a purely mechanical procedure such techniques may be valuable in a multi country world where the aggregate portfolio of currencies and securities is unknown and is not supposed to be efficient

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

international portfolio diversification with estimation risk international portfolio diversification has long been advocated as a way of enhancing average returns while reducing portfolio risk for the investor who considers diversifying into foreign securities this proposition however relies on the assumption that the required inputs to the classical mean variance analysis are known with certainty typically expected returns variances and covariances are simply replaced by their ex post sample values and the optimal portfolio is derived without mentioning the uncertainty inherent in these parameter values but the rational investor should take this uncertainty into account when forming expectations and probably will consider estimators that are less subject to estimation error than the classical sample mean this paper investigates alternative estimators of expected returns and their implications for the alleged gains from diversification an important observation is the crucial influence that errors in estimating expected returns have on portfolio analysis a closer examiprevious studies of international portfolio diversification have relied on ex post meanvariance analysis without considering the problem of estimation risk typically past averages are substituted for expected returns and no allowance is made for the uncertainty inherent in these parameter values first i demonstrate the shortcomings of such an approach and second i investigate another method of estimating expected returns initially proposed by stein by shrinking the sample averages toward a common mean i find that the out of sample performance of the optimal portfolio is substantially increased one of the implications of this method is that the classical conclusions vastly overestimate the possible gains in average returns instead benefits from diversification are more likely to accrue from a reduction in risk this paper draws on part of my dissertation at the university of chicago i am grateful to arnold zellner michael mussa george constantinides and especially john bilson for useful discussions and comments numerous improvements were also suggested by the referee this research received the generous financial support of the college interuniversitaire d etudes doctorales dans les sciences du management

tests of the capm with time varying covariances a multivariate garch approach this paper examines an asset pricing model in which the sharpe lintner capm and the zero beta capm are special cases the model allows the ratio of expected market risk premium to market variance the conditional expected excess returns and the risks to change over time the results are found to be sensitive to the choice of the portfolio formation techniques significant time variability is shown in the conditional expected excess asset returns and risks and also in the reward to risk ratio

income taxes and the timing of marital decisions abstract in this paper we estimate the impact of the federal individual income tax on the timing of marital decisions anecdotal evidence suggests that the tax penalty often associated with marriage contributes to the decision of when to marry using household data from the panel study on income dynamics we estimate various models of the probability of delaying marriage as a function of the change in tax burden caused by marriage as well as several other variables we find that there is a significant positive relationship between the marriage penalty in a year and the probability of delaying marriage until the following year the magnitude of the effect however is small

the changing geography of the military industry in britain lovering j 1991 the changing geography of the military industry in britain reg studies 25 279 293 a number of studies have suggested that defence spending has had a significant impact on the location of industry and the geography of labour markets this paper drawing on a recent study of the employment of research and development professionals in the uk defence industry confirms that defence spending and related employment has been concentrated in the south and west of england it also shows that a number of changes are underway the unusually large british defence industry is restructuring as a result of changes in supply and in demand following the end of the cold war major job losses are in process which may amount to a third of a million jobs in the 1990s this is associated with a spatial reorganization the effect of which is generally to consolidate high level activities in the industry in the south of england and deepen the spatial division of labour a key locational influence in this

income risk the tax benefit system and the demand for children because children represent an irreversible commitment parents might hedge against higher income risk by having fewer children we show that under plausible assumptions recent increases in income risk might have reduced prudent parents desired fertility responses to this via the tax benefit system are considered introducing an expected revenue neutral transfer cum child benefit system under proportional taxation which lets the government share the household s income risk increases desired fertility for parents who would choose to have small families in this system s absence pound for pound the targeted child benefit enhances fertility more than the lump sum transfer

saying i don t the effect of the affordable care act young adult provision on marriage this paper investigates the effect of the affordable care act young adult provision on the propensity to marry the young adult provision expanded options for obtaining insurance coverage outside of marriage young adults affected by the provision might have less incentive to marry since one avenue for obtaining health insurance coverage is through marriage this paper examines this question by applying difference in differences type methods using the 2008 2013 american community survey results suggest that the provision is associated with decreases in the likelihood of marrying cohabitation and spousal health insurance coverage and an increase in the probability of divorce

marriage divorce and social safety net policy i study the effects of the earned income tax credit eitc and welfare reforms of the 1990s on flows into and out of marriage i use test scores to predict who is most likely to be affected by the policy changes and employ a flexible functional form to estimate heterogeneous effects i find that lower earning married women are more likely to divorce as the eitc expands but i find no effect of eitc generosity on marriage i find little effect of welfare generosity on marriage or divorce flows for any group my results suggest that there are nonsymmetric responses to policy on flows into and out of marriages

income taxes and the marriage decision economic incentives have been found to play an important role in the marriage decision in developed and developing countries however the way in which the income tax treatment of the family affects these incentives has been routinely ignored this paper uses time series data for the united states from 1947 to 1988 to estimate the impact of economic factors including for the first time the tax consequences of marriage on the aggregate marriage rate the estimation results indicate that economic factors like income female wages and education play an important and statistically significant role in the marriage decision in particular the tax consequences of marriage clearly affect the marriage decision when income taxes increase with marriage the aggregate marriage rate declines however the magnitude of this impact is quite small this result suggests that some individuals respond to tax incentives in their marriage choices but that for many individuals taxes do not affect these decisions

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

what explains china s rising urbanisation in the reform era china has been transforming from a rural to an urban economy over the past century especially since 1978 when economic reforms were initiated and rapid economic growth began this paper attempts t

the butz ward fertility model in the light of more recent data butz and ward b w in their 1979 article the emergence of countercyclical us fertility postulated a change in the longstanding pattern of procyclical fertility first documented by dorothy thomas in 1927 the paucity of published data on female wages led b w to approximate a time series using a number of disparate sources there has been some criticism of the b w methodology focusing mainly on the problem of autocorrelation in time series analysis and misspecification 15 years after the 1979 article a great deal of both micro and macro data exist which were not available at the time of the original b w research the author tests the robustness of the b w results by first updating them using their original sources then with data drawn from the march current population survey cps the results indicate that there are wide divergences between the original b w estimates of female wages and the cps time series in particular the cps time series shows that much of the dramatic increase in the female hourly wage in the 1960s as estimated by b w appears to have been the result of the proxy they used for average hours worked that proxy was a series of average hours of all workers in the retail trade which trends sharply downward contrary to the actual pattern for married women estimates of the b w model using the new cps series fail to work neither in terms of the signs nor significance of the variables even using the original b w data their model no longer fits in the period after about 1954 their results seem to have been driven by relationships exhibited during 1947 54 almost 10 years before the increases in female labor force participation which began in the 1960s

vertical multinationals and host country characteristics abstract we inquire into the question of what country characteristics particularly market size and labor force composition attract inward investment this approach is motivated by the empirical observation that the poorest countries attract a far smaller share of world direct investment than their share of income small markets receive less investment per capita than larger ones we develop a model that generates both stylized facts in equilibrium suggesting the existence of a development trap for small skilled labor scarce countries