are more exports always better comparing cash and in kind export subsidies cash and in kind export subsidies are compared it is found that the ability to enhance real farm income via export subsidies is sensitive both to the form cash vs in kind and the point of policy intervention in kind subsidies of the type granted under the export enhancement program can in fact reduce real farm income export subsidies are examined under three separate scenarios no target price or nonrecourse loan programs a target price but no nonrecourse loan program and a nonrecourse loan program but no target price program the presence of a nonrecourse loan program dampens the impacts of both cash and in kind export subsidies before the introduction of the export enhancement program eep two types of export subsidies had been used by the united states a direct cash subsidy for wheat exports and an export payment in kind pik for feed grains cotton rice and nonfat dry milk under the original export pik program exporters showing proof of export sales were given certificates redeemable for commodity credit corporation ccc commodities to be exported cochrane and ryan the eep reintroduced in kind export subsidies in 1985 this paper compares the relative effectiveness of cash and pik export subsidies in increasing agricultural exports real prices and real incomes because agricultural policy ultimately must be judged by how it affects agriculture s relative position in the economy the framework is general equilibrium the model considers the interplay between farmers international middlemen nonfarm producers domestic consumers and foreign consumers the analysis shows that the ability to enhance real farm income is sensitive both to the form cash subsidies versus pik subsidies and point of policy intervention at the farm or export level in particular the results demonstrate that pik subsidies of the type granted under the eep can decrease real farm income from production agriculture s perspective an export pik program even though it raises total agricultural exports is not a sure path to improving agriculture s position in the general economy sometimes less exports are better we first introduce the model the second section reexamines solely for comparative purposes the consequences of introducing cash subsidies to commercial exporters the third section examines in kind export subsidies given to farmers and the fourth considers in kind subsidies to commercial traders the fifth section reexamines these results when the real target price of the agricultural good is fixed next tied pik export subsidies are considered finally the effects of contemporaneous existence of pricesupport operations on the results are discussed

united states export subsidies in wheat strategic trade policy or expensive beggar thy neighbor tactic this paper examines the domestic and international impacts of the u s export enhancement program eep for wheat eep uses targeted in kind subsidies to expand u s exports and was designed specifically to compete with subsidized exports from the european community ec we argue eep cannot be welfare improving for the u s even considering strategic trade theory we then model eep as an in kind constrained targeted export subsidy and determine its price quantity and budgetary effects empirical results show that no exporting country gains from eep and that the intended loser the ec is only slightly harmed we find the export subsidies generate only a small increase in u s wheat exports eep is an expensive program based on our estimates for 1988 government cost of additional wheat exports under eep reached 469 per metric ton

do limits matter evidence on the effects of tax limitations on student performance abstract the goal of this research is to determine if limits on the revenue raising ability of school districts translate into constraints on the ability of these districts to affect student performance we use the recent imposition of property tax limitations on school districts in the chicago metropolitan area to determine if these limits have translated into slower growth in student performance we find only limited evidence that student performance in districts subject to the tax limitations has fallen relative to student performance in districts not subject to the limitations

agricultural export subsidies and intermediate goods trade in this paper i examine the effects of export subsidies when a bulk commodity is an intermediate good which is either exported or processed into a higher value agricultural good for domestic or export sale the analysis shows that while the industry producing the subsidized good benefits the industry producing the other good may not a bulk commodity export subsidy may lower the price of the higher value agricultural commodity an export subsidy on the higher value agricultural commodity may lower the bulk commodity s price the outcome depends on the relative excess supply and excess demand elasticities and on the market structure

competition between private and public schools vouchers and peer group effects a theoretical and computational model with tax financed tuition free public schools and competitive tuition financed private schools is developed students differ by ability and income achievement depends on own ability and on peers abilities equilibrium has a strict hierarchy of school qualities and two dimensional student sorting with stratification by ability and income in private schools high ability low income students receive tuition discounts while low ability high income students pay tuition premia tuition vouchers increase the relative size of the private sector and the extent of student sorting and benefit high ability students relative to low ability students

a simulation model of the u s export enhancement program for wheat nash bargaining game models representing negotiations of export enhancement program eep sales are combined with a quarterly spatial price equilibrium model representing non eep world wheat trade to simulate the eep s impact in late 1985 and early 1986 the benefits of the eep in terms of increased u s export revenues adjusted for subsidy costs are estimated to be less than one percent of total u s revenues for the first quarter of 1986 model simulations also show a lowering of the ccc loan rate to have a much greater potential for increasing u s wheat exports than the eep as operated

wheat storage and trade in an efficient global market domestic and international linkages in speculative stockholdings and trade of wheat are analyzed using a dynamic rational expectations model of the world wheat market dominated by the u s and the eu the results demonstrate the importance of endogenizing both storage and trade in studying commodity markets and suggest that past government stockholdings have not followed efficient market outcomes results indicate that elimination of the export enhancement program by the u s and of export restitution payments by the eu are unlikely to have a major impact on wheat exports from the two regions but will save millions of tax dollars in both regions

how teachers unions affect education production this study helps to explain why measured school inputs appear to have little effect on student outcomes particularly for cohorts educated since 1960 teachers unionization can explain how public schools simultaneously can have more generous inputs and worse student performance using panel data on united states school districts i identify the effect of teachers unionization through differences in the timing of collective bargaining especially timing determined by the passage of state laws that facilitate teachers unionization i find that teachers unions increase school inputs but reduce productivity sufficiently to have a negative overall effect on student performance union effects are magnified where schools have market power

caveat emptor cross country data on education and the labor force abstract cross country data on education and the labor force frequently are used to describe important dimensions of development and to estimate models of economic growth and growth determinants the impact of education and related phenomena this investigation finds 1 there are serious intertemporal and inter country comparability problems with these data that may importantly affect inferences about labor force size trends and productivity and schooling investments and impact 2 data gaps are systematically related to levels of development and literacy and 3 conclusions about the determinants or consequences of development based on constructed data that have been made available to fill data gaps can be seriously misleading

performance of technical analysis in growth and small cap segments of the us equity market abstract a large universe of technical trading rules applied to a set of technology industry and small cap sector portfolios over the 1995 2010 period yields superior predictability after adjusting for data snooping bias in the first half of the sample period and delivers statistically significant profits for a number of portfolios when the transaction cost is assumed to be of small to moderate size technical analysis is not able to outperform the buy and hold approach for any portfolio in the set in the second half of the sample period the finding that the short term return predictability becomes much weaker in the more recent period suggests that the underlying segments of the equity market have become more efficient over time the fact that mechanical trading strategies have been futile after adjusting for data snooping bias for two samples of portfolios where technical analysis is most anticipated to succeed suggests that it is unlikely to have delivered abnormal returns in any other segment of the domestic equity market in the last decade

examination performance in scottish secondary schools an ordered logit approach this paper analyses the determinants of educational outcomes for scottish secondary schools using an ordered logit model with data on school examination performance for pupils in the last year of compulsory education separate equations are estimated for 1993 1994 and 1998 1999 the empirical results in line with previous british studies underline the importance of family peer group and school influences in determining educational outcomes they cast doubt however on suggestions that there is an optimal size of school

impact of the us ec price war on major wheat exporters shares of the chinese market abstract china is both the world s largest producer and consumer of wheat in an attempt to gain a larger slice of the important chinese market both the european community and the united states have offered china subsidised wheat in addition other exporters have offered attractive credit arrangements to china the objective of this paper is to measure the overall impact of these policies on each exporter s share of the chinese market to that end an improved version of the constant market shares model is applied to data on chinese wheat imports in the 1980 s the results indicate that the united states has been outperforming the other exporters since subsidised us wheat sales were authorised for china in 1987 the implications of the analysis for the smaller exporters and international wheat trade are discussed

an economic model of teaching effectiveness the literature on the determinants of good teaching performance has been largely devoted to empirical measurement a complete review of the publications in this area would require at least an entire issue the size of this journal yet it is virtually impossible to discover attempts to derive hypotheses about the determinants of good teaching from explicit models of behavior this has led researchers into the trap of exploring only the empirical determinants of good teaching performance typically the results of student evaluations are correlated with affective personality traits of the teachers with peer evaluations of psychological compositions or even with the results of various psychological tests examples are the works of robert isaacson et al frank costin et al and wilbert mckeachie et al in most of these studies no substantive conclusions are reached regarding the determinants of effective teaching in the few studies which do contain significant findings the independent variable in question is difficult to explain as a direct determinant of teaching effectiveness for example isaacson et al find that virtually the only statistically significant determinant of effective teaching is the personality characteristic which they label culture this may imply that simply wearing a tweed jacket and taking up pipesmoking is sufficient to improve teaching this paper takes a somewhat different approach to the analysis of teaching assume that the individual in question wishes to maximize teaching effectiveness clearly there are constraints on this maximization process one must necessarily be the time budget constraint a second constraint however adds a good deal of interest to the model this constraint is best described as the bundle of characteristics available to the individual these characteristics could be termed the components of the individual s personality such attributes include physical appearance psychological makeup speaking ability and a myriad of other variables thus this model bears a resemblance to the standard economic models of monopolistic competition see a michael spence before proceeding to a formal statement of the problem a philosophical issue must be addressed what is meant by teaching effectiveness generally this is interpreted as maximizing student evaluations of teachers however this is clearly not always equivalent to maximizing student learning unfortunately the latter variable is difficult but not impossible to measure preand posttesting with standardized tests is becoming increasingly accepted for example the meaning of teaching effectiveness in this paper must unfortunately remain ambiguous some teachers concerned perhaps with obtaining tenure will interpret good teaching as obtaining good evaluations the criterion by which they are judged others may take a more eclectic viewpoint since the problem below is an individual maximization problem the precise definition of effective teaching may simply vary from individual to individual see w r allen formally this problem is exactly analogous to one first addressed by kelvin lancaster he assumes that the consumer attempts to maximize satisfaction through purchase of bundles of attributes each commodity is possessed of certain of these characteristics by consuming various combinations of these commodities the consumer is assistant professor department of economics and director center for economic education california state university hayward i would like to thank alex cassuto nancy sanders and an anonymous referee for helpful discussion in a previously unreported experiment in the department of economics california state universitybakersfield faculty members were required to wear coats and ties in classes it was subsequently observed that teaching evaluations improved unfortunately no detailed statistical results of this experiment are available for analysis

production and innovation when techniques are tacit the case of education abstract the central theme of this paper is that the conventional economic theory of production does not hold even approximately in a field like education after examining the result of input output studies in education and the effect of government attempts to enhance education effectiveness we provide a sketch of a new production theory for sectors where techniques are poorly articulated and idiosyncratic

modeling multiple outputs in educational production functions for some time now economists have conceptualized learning as a production process most educational production functions specify only one output usually a measure of cognitive achievement some recent studies have recognized the multidimensional aspects of schooling specifying outputs in both the cognitive and affective domains introducing multiple outputs into the production function raises interesting theoretical and empirical issues one issue is the manner in which various outputs are interrelated how one models output interactions in educational production functions may be important are the outputs multiple products if so are they independently or simultaneously produced or are the outputs joint products answers to these questions may affect empirical estimates of the educational production function s this paper briefly describes how one might approach this problem we argue on conceptual grounds that modeling outputs in the cognitive and affective domains as joint products is preferable in addition we compare the three approaches empirically to evaluate the sensitivity of educational production function parameter estimates to output specification

targeted agricultural export subsidies and social welfare global export subsidies are known to be welfare reducing this paper demonstrates that a small targeted subsidy can increase the welfare of the subsidizing country by exploiting differences in excess demand elasticities targeted export subsidies can also increase the subsidizing country s welfare by exploiting transportation cost differences excess supply elasticities of competitors or excess demand elasticities of markets supplied by competitors when markets are shared an empirical model of the world wheat market illustrates the theoretical conclusions an optimal targeted subsidy scheme causes a small increase in u s welfare but with major disruptions in world trade flows

on the efficiency of the european carbon market new evidence from phase ii i examine in the period 2008 2011 the efficiency of four carbon dioxide co2 emission allowance futures traded in the intercontinental exchange ice to this end i assess the profitability of trading strategies based on simple technical analysis rules and naive forecasts the results from 2010 onwards are consistent with weak market efficiency in turn this finding suggests that the european carbon market is gradually attaining a state of maturity

partial fiscal decentralization reforms and educational outcomes a difference in differences analysis for spain abstract several arguments derived from fiscal federalism theory suggest that decentralization may improve the provision of public goods and services however theory remains inconclusive regarding these effects under partial decentralization the aim of this study is to examine this hypothesis by evaluating the effects on educational outcomes of the partial fiscal decentralization reform that took place in spain during the 1980s since education competences were devolved to the regions at different points in time we can consistently estimate the effects of this reform by applying the differences in differences method and by using the non decentralized regions as the comparison group we find that the reform had a sizeable impact on the percentage of students dropping out early from school the effects are much stronger for regions with a high level of revenues we also find that the effects are concentrated in the high school program and that the reform was not able to improve educational outcomes in the vocational program we interpret these results as evidence that decentralization improved the match between education policy and population preferences

does competition among public schools benefit students and taxpayers tiebout choice among districts is the most powerful market force in american public education naive estimates of its effects are biased by endogenous district formation i derive instruments from the natural boundaries in a metropolitan area my results suggest that metropolitan areas with greater tiebout choice have more productive public schools and less private schooling little of the effect of tiebout choice works through its effect on household sorting this finding may be explained by another finding students are equally segregated by school in metropolitan areas with greater and lesser degrees of tiebout choice among districts

intertemporal profitability and the stability of technical analysis evidences from the hong kong stock exchange this study investigates the impact of market integration on the profitability of two simple and popular technical trading rules the simple moving average sma and the trading range break trb in hong kong using data from 1972 to 2006 we find that the sma 1 50 consistently outperforms the market before the integration of stock exchanges in 1986 under the 1 50 rule a variable length moving average performs better than the fixed length moving average rule by 2 5 to 5 annual before transaction costs because it includes the information of the first 9 days into investors decision the results are robust to the out of sample tests for the validity of the profitability of the trading rules the returns of the trading range break rules are insignificant over the 35 year span our results support the conjecture that stock market integration may lead to better information efficiency the findings of significant pre 1986 profits and insignificant post 1986 profits contradict previous findings that r

schooling and economic well being the role of nonmarket effects standard estimates of the economic value of additional schooling based on earnings differences associated with differences in the level of schooling attained cover only a portion of the total effects of education that are valued by citizens we first identify a catalog of nonmarketed effects many of which have been recently studied by economists and then propose a procedure for estimating a willingness to pay value for these effects using empirical estimates of the magnitude of a selection of these effects found in the literature we calculate willingness to pay values using our proposed procedure these illustrative calculations suggest that standard estimates of the benefit of incremental schooling substantially understate the full value of such investments

asymmetric return dynamics and technical trading strategies abstract we investigate the profitability of technical trading strategies based on an asymmetric reverting property of stock returns we identify an asymmetry in return dynamics for daily returns on the s p 500 index return dynamics evolve along a positive negative unconditional mean after a prior positive negative return the trading strategies based on this asymmetry generate a positive return for buy signals a negative return for sell signals and a positive return for the spread between buy and sell signals our results imply that the observed asymmetry in return dynamics is the main source of profitability for the implied strategies thereby corroborating arguments for the usefulness of technical trading strategies

anticipating the consequences of school reform a new use of dea we use dea type linear programming techniques to simulate a basic component of educational reform eliminating restrictions on the allocation of school personnel our technique allows us to identify potential output gains or equivalently potential cost savings from reform we can also identify which personnel groups are likely to gain and lose under this reform when we apply our model to a sample of texas school districts we find evidence that the educational establishment has substantial economic rents to protect from school reform and that the primary beneficiaries of reform are likely to be affluent school districts with few minority students the technique which relies on the relationship between the direct and indirect distance functions can be easily generalized to measure the potential gains from removing other input restrictions such as union work rules environmental regulations or deed restrictions

financial returns and efficiency as seen by an artificial technical analyst abstract we introduce trading rules which are selected by an artificially intelligent agent who learns from experience an artificial technical analyst these rules restrict the data mining concerns associated with the use of simple technical trading rules as model evaluation devices and are good at recognising subtle regularities in return processes the relationship between the efficiency of financial markets and the efficacy of technical analysis is investigated and it is shown that the artificial technical analyst can be used to provide a quantitative measure of market efficiency we estimate this measure on the djia daily index from 1962 to 1986 and draw implications for the optimal behaviour of certain classes of investors it is also shown that the structure of technical trading rules commonly used is consistent with utility maximisation for risk neutral agents and in a myopic sense even for risk averse agents

the economics of schooling production and efficiency in public schools n recent years public and professional interest in schools has been heightened by a spate of reports many of them critical of current school policy these policy documents have added to persistent and long standing concerns about the cost effectiveness and fairness of the current school structure and have made schooling once again a serious public issue as in the past however any renewed interest in education is likely to be short lived doomed to dissipate as frustration over the inability of policy to improve school practice sets in this frustration about school policy relates directly to knowledge about the educational production process and in turn to underlying research on schools although the educational process has been extensively researched clear policy prescriptions flowing from this research have been difficult to derive 2 there exists however a consistency to the research findings that does have an immediate application to school policy schools differ dramatically in quality

the integration of the market for soybeans and soybean products abstract this article addresses the question of whether soybeans soybean meal and soybean oil produced in the usa and exported were part of a single world geographic market during the decade of the 1980s an answer to this question is sought using an approach to defining a geographic market based on the notion of instantaneous causality the empirical results based on prices for soybeans soybean meal and soybean oil for three spatially diffuse locations suggest that there was but a single identifiable world market for these commodities over the period of study this has implications for the continued presence of soybean production subsidies and discussions on international agreements designed to reduce or eliminate these subsidies

school decentralization helping the good get better but leaving the poor behind abstract the decentralization of public services is a major feature of institutional innovation the main argument in support of decentralization is that it brings decisions closer to the people thereby alleviating information asymmetries and improving accountability however decentralization can also degrade service provision in poor communities that lack the ability to voice and defend their preferences in this paper we analyze the average and distributional effects of school decentralization on educational quality in argentina we find that decentralization had an overall positive impact on student test scores the decentralization gains however did not reach the poor thus although bringing decisions closer to the people may help the good get better the already disadvantaged may not receive these benefits

bureaucracy and student performance in us public schools this paper tests the hypothesis that monopoly power of school districts allows bureaucratic expansion and fosters poor academic performance in the public school system in california evidence indicates that monopoly power is positively associated with employment of administrators and teachers and therefore supports the bureaucratic expansion hypothesis while numbers of teachers do not influence performance measures numbers of administrators are shown to positively affect performance results that suggest that too many teachers but too few administrators are employed while bureaucracy theory may explain the resource misallocation other reasons might include rising public pressures on hiring teachers over administrators spending equalization policies and the weak california economy in the period under investigation

public education supply and student performance this paper develops a model of public exchange whereby voters and education policy makers exchange with one another within school districts because school district consolidation lowers alternatives to voters parents consolidation is hypothesized to raise public education spending because weakened intergovernmental competition allows policy makers to promote their own utility rather than that of constituents models of public education spending and academic performance are estimated over 1988 1990 while evidence indicates little support for the traditional treatment of the leviathan hypothesis that greater competition lowers public spending this paper argues that education spending by itself does not fully provide a valid test of the leviathan hypothesis since spending by itself does not necessarily indicate the quality of public education programmes empirical evidence indicates that greater numbers of schools and school districts promote higher student achievement as evidenced by higher math and v

factors influencing education achievement this study sets out to examine the factors that influence human capital formation in predominately rural communities the results indicated that parents educational attainment greatly influences the quality of education for their children thus consolidating smaller poor schools in which the parents have limited education above primary and secondary schools will not likely lead to much if any improvement in students test scores

imperfect competition and exchange rate pass through in the food processing sector imperfect competition has become an important dimension of international trade theory helpman and krugman product differentiation and economies of scale are explicitly incorporated in the new trade theory policy prescriptions following from these models hinge critically on underlying assumptions particularly the form of strategic firm behavior competitive cournot or bertrand unfortunately these models do not lend themselves easily to empirical testing also little empirical information exists on the strategic behavior of firms in international markets thus various models and tests on different aspects of imperfect competition in trade have been proposed and implemented one form of imperfect competition in international trade that has received attention re

the competitive structure of u s agricultural exports the competitive structure of u s agricultural exports is examined using a model of exporter behavior based on pricing decisions across destination markets market power is revealed in the adjustment patterns of export prices in response to exchange rate movements the results reject the hypothesis that the export pricing decisions by u s firms are consistent with price discrimination across destination markets for cotton corn and soybeans the strongest evidence against the competitive market structure is obtained for international trade in wheat where results indicate that the two largest importers soviet union and prc may exert market power to obtain lower prices

the welfare effects of targeted export subsidies a general equilibrium approach a three country model of export subsidies is developed with an exporter an importer and a neutral country which can act on either side of the market when the neutral country is an exporter the country offering a targeted export subsidy always suffers a welfare loss however when the neutral country is an importer the possibility of a paradoxical result that the subsidizing country can gain and the subsidized country can lose is shown to exist and the conditions under which this result occurs are derived the model fails to provide justification on national welfare grounds for widespread use of targeted export subsidies such as the export enhancement program

the effect on black white wage differences of differences in the quantity and quality of education using data from the national longitudinal survey of youth for the years 1979 88 the author examines the extent to which black white differences in educational attainment educational quality and unmeasured individual ability can explain black white wage differences an analysis that corrects for both selectivity and ability biases inherent in estimating the education wage relationship shows that the main source of the black white wage differential is the racial difference in the quality rather than quantity of schooling in fact the author concludes closing the racial gap in the basic skills learned in school could reduce the wage differential by two thirds

intergenerational transfers production and income distribution abstract we consider an overlapping generations economy where the aggregative production process uses physical capital and human capital intergenerational transfers from parents to their children are motivated by altruism we distinguish between two types of transfers investment of parents in the education of their offspring and capital transfer the gift bequest motive we show that the intensity of each type of altruism and hence the composition of the two types of transfers affect significantly the equilibrium output and the intragenerational income distributions comparing competitive equilibria from the same initial distributions of capital transfers and human capital we derive a the economy with the higher education inclined altruism attains lower output and more equal intragenerational income distributions if either the production function s elasticity of substitution is not large or the altruism is weak b for more bequest inclined altruism the effects are usually reversed c under public provision of education higher bequest inclined altruism results in lower output and less equal distribution of income in all dates

the impact of the export enhancement programme on the soybean market in the united states this study endeavours to understand the nature and extent of the market interrelationships between the price of soybeans the price of soybean meal and oil and the crushing margin in order to assess how processors benefit relative to farmers with regard to the export enhancement programme as it applies to soybean oil the results suggest that while both farmers and processors do benefit from the programme processors benefit porportionately more than farmers receiving nearly three times the relative return of farmers from the effects of the programme this observed outcome is a function of the joint nature of the products being produced soybean meal and oil by processors and the relative less importance afforded to soybean oil in the production process in an absolute sense however the returns to soybean farmers are substantially greater than those to processors being a function of the magnitude of the price of soybeans relative to the crushing margin

intra school competition and student achievement within the economics of education literature numerous studies have investigated the relationship between educational market competition and educational achievement educational market competition has been defined as either the availability of vouchers within a community or the number of schools or school districts within the relevant market structure while these studies have shown that increases in inter district competition result in increased student achievement no studies to our knowledge have yet investigated the effect of intra school competition on student achievement within this study a measure of intra school competition is developed and the findings indicate that increased intra school competition leads to increased student achievement

schools and housing values this study combines historical and quantitative methods to determine the market response to a major nineteenth century american urban architectural form the speculatively built row house the paper estimates a hedonic price index which decomposes the

on the contract curve a test of alternative models of collective bargaining the traditional model of collective bargaining confines unions to settlements constrained by the employer s labor demand curve but an alternative model places wage employment outcomes on a contract curve that extends beyond the labor demand curve this paper derives a multidimensional hedonic contract curve model in which employment security provisions are used to maintain efficient bargains outside the employer s demand curve and distinguishes empirically between the contract curve and demand constraint models using data for public school teachers in new york state estimates clearly support the contract curve model over the demand constraint model by linking the gap between compensation and the value of the marginal product to the strength of employment security provisions

are moving average trading rules profitable evidence from the european stock markets this article examines the profitability of several simple technical trading rules for 16 european stock markets over the 1990 to 2006 period our results indicate that increasing moving average rules indeed have predictive power being able to discern recurring price patterns for profitable trading even after accounting for the effects of data snooping bias to assess the profitability of different technical trading rules and strategies we adopt the white s 2000 reality check rc test that quantifies the data snooping bias and adjusts for its effects our empirical results also support the hypothesis that technical trading rules can outperform the buy and hold strategy after accounting for transaction costs

the effects of class size on student achievement new evidence from population variation abstract i identify the effects of class size on student achievement using longitudinal variation in the population associated with each grade in 649 elementary schools i use variation in class size driven by idiosyncratic variation in the population i also use discrete jumps in class size that occur when a small change in enrollment triggers a maximum or minimum class size rule the estimates indicate that class size does not have a statistically significant effect on student achievement i rule out even modest effects 2 to 4 percent of a standard deviation in scores for a 10 percent reduction in class size

technical analysis and the spanish stock exchange testing the rsi macd momentum and stochastic rules using spanish market companies the aim of this research is to examine the result of the application of the indicators relative strength index rsi moving average convergence divergence macd momentum and stochastic in different companies of the spanish continuous market by using these indicators it is intended to give purchase and sale recommendations to small investors the generation of great capital gains depends on the type of the stock exchange company and the indicator which is being used in addition this research solves the problems in case of ambiguity in the indicators for the traders

the quality of schooling quantity alone is misleading although much research discusses the quantity of schooling as an effective impact on productivity and earnings most such research leaves out the idea of the quality of schooling which may cause biases in the estimated returns to schooling this paper consequently attempts to extend the standard mincerian approach to incorporate school quality as well as quantity it demonstrates how exclusion of quality in the standard procedure may cause biases in the estimated returns to years of schooling probably in the upward direction the paper explores the implications of this extension of the standard model for the case of young brazilian males it shows that the estimate of the private return to years of schooling using the preferred quality inclusive specification is only one half the estimate using the standard procedure indicating substantial upward bias in the standard estimates it further outlines a method for estimating a social return to quality and finds that it exceeds substantially the social return to quantity the paper then shows why this in turn suggests there may be an equity productivity trade off in schooling investments

the trade off between child quantity and quality an empirical investigation of trade offs between number of children and their scholastic performance confirms that family size directly affects children s achievement though parents show no favori

evaluating the magnitude and the stakes of peer effects analysing science and math achievement across oecd what follows is an exercise aimed at estimating peer effects impact on science and math test scores of secondary school students surveyed in 1995 by the international education agency across oecd countries it is also to discuss their importance for educational policy particularly regarding the highly sensitive issue of ability grouping using this unique international database this study assesses the magnitude of the peer effect relative to more traditional inputs referring to education policy stakes we control for the presence of increasing or decreasing return this study also checks for cross effects in order to determine whether peer effects matter more to low or high ses pupils and whether their final impact on achievement is affected by the underlying level of heterogeneity within the group using a methodology which a priori accounts for the clustering of the data within countries and schools classrooms i e fixed random effect or hierarchical model our analysis indicates that peer effects are strong determinants of both math and science achievement relative to individual ses and other school inputs the presence of increasing of decreasing returns is not obvious but we find systematic evidence that low ability pupils are more sensitive to peer group characteristics by contrast this study also find that for a given level of the peer effect higher heterogeneity comes at a certain cost in brief these results provide no systematic evidence regarding grouping policies

a note on the weak form efficiency of capital markets the application of simple technical trading rules to uk stock prices 1935 to 1994 abstract brock et al 1992 found technical trading rules to have predictive ability with regards to the dow jones index the current paper considers whether this result can be replicated on uk data the paper also considers whether investors could earn excess returns from technical analysis in a costly trading environment the paper concludes that although the technical trading rules examined do have predictive ability in terms of uk data their use would not allow investors to make excess returns in the presence of costly trading