class size education and wages we use micro data for england and wales to examine the effects of class size on the decision to stay on in full time schooling at 16 and on wages later in life we find that class size has a sizeable and significant effect on the decision to stay on this finding is very robust wage equations show the effect of staying on is significantly positive for wages combining this with the effect of class size on the staying on decision reveals that class size significantly affects future wages reduced form models lead to much less accurate and insignificant estimates

using maimonides rule to estimate the effect of class size on scholastic achievement the twelfth century rabbinic scholar maimonides proposed a maximum class size of 40 this same maximum induces a nonlinear and nonmonotonic relationship between grade enrollment and class size in israeli public schools today maimonides rule of 40 is used here to construct instrumental variables estimates of effects of class size on test scores the resulting identiecation strategy can be viewed as an application of donald campbell s regression discontinuity design to the class size question the estimates show that reducing class size induces a signiecant and substantial increase in test scores for fourth and efth graders although not for third graders when asked about their views on class size in surveys parents and teachers generally report that they prefer smaller classes this may be because those involved with teaching believe that smaller classes promote student learning or simply because smaller classes offer a more pleasant environment for the pupils and teachers who are in them mueller chase and walden 1988 social scientists and school administrators also have a longstanding interest in the class size question class size is often thought to be easier to manipulate than other school inputs and it is a variable at the heart of policy debates on school quality and the allocation of school resources in many countries see e g robinson 1990 for the united states ofsted 1995 for the united kingdom and moshel ravid 1995 for israel this broad interest in the consequences of changing class size

the headmaster ritual the importance of management for school outcomes a the role of school principals largely resembles that of corporate managers and the leadership they provide are often viewed as a crucial component for educational success we estimate the impact of individual principals on various schooling outcomes by constructing a principal school panel data set that allows us to track individual principals as they move between schools we find that individual principals have a substantive impact on school policies working conditions and student outcomes particularly students who attend a school with a one standard deviation better principal receive on average 0 12 standard deviations higher test scores despite having very rich background information on principals it is difficult to determine which principal characteristics that form the basis for successful school management we also find a somewhat mixed picture on what management style characterizes a successful principal we further show that the scope for principal discretion for better or for worse is larger in small schools in voucher schools and in areas with more school competition

home versus school learning a new approach to estimating the effect of class size on achievement i estimate the effect of class size on scholastic achievement using that schools are only in session during the school year and out of session during the summer this seasonal feature of the schooling system makes it possible to control for unobservable pupil characteristics affecting both the level and change in achievement using swedish data i find that smaller classes generate higher achievement a comparison with the results from applying the same data to the widely used value added model is also made

long term effects of class size this article evaluates the long term effects of class size in primary school we use rich data from sweden and exploit variation in class size created by a maximum class size rule smaller classes in the last three years of primary school age 10 to 13 are beneficial for cognitive and noncognitive ability at age 13 and improve achievement at age 16 most important we find that smaller classes have positive effects on completed education wages and earnings at age 27 to 42 the estimated wage effect is large enough to pass a cost benefit test

towards more realistic conceptualisations of foreign operation modes we address a long standing discrepancy between theory and practice regarding how firms choose use and modify their modes of operation in foreign markets theory typically treats foreign operation modes as choices between well specified discrete alternatives observation of business practice reveals a messier reality we commonly observe mode packages within mode adjustments and mode role changes yet by and large these aspects of international business development have been relatively ignored in the literature and in theoretical and empirical research we propose richer and more realistic conceptualisations of foreign operation modes and look at their implications for theory and practice

using regional variation in wages to measure the effects of the federal minimum wage the imposition of a national minimum wage standard provides a natural experiment in which the treatment effect varies across states depending on the fraction of workers initially earning less than the new minimum the author exploits this fact to evaluate the effect of the april 1990 increase in the federal minimum wage on teenagers wages employment and school enrollment comparisons of grouped and individual state data confirm that the rise in the minimum wage increased teenagers wages there is no evidence of corresponding losses in teenage employment or changes in teenage school enrollment

on the relationship between firm size and export intensity export marketing literature supports the view that firm size is positively related to export intensity although the empirical findings have been mixed a number of theoretical arguments are used to support this proposition i e international marketing economies of scale limited managerial and financial resources of small firms decisionmaker s risk perception based on a large survey of the italian manufacturing industry the article falsifies the proposition and challenges some widely held assumptions in export marketing literature

the effect of schooling on cognitive skills how schooling a ects cognitive skills is a fundamental question forstudies of human capital and labor markets while scores on cognitive ability testsare positively associated with schooling it ha

economic status and health in childhood the origins of the gradient the well known positive association between health and income in adulthood has antecedents in childhood not only is children s health positively related to household income but the relationship between household income and children s health becomes more pronounced as children age part of the relationship can be explained by the arrival and impact of chronic conditions children from lower income households with chronic conditions have worse health than do those from higher income households the adverse health effects of lower income accumulate over children s lives part of the intergenerational transmission of socioeconomic status may work through the impact of parents income on children s health

assessing institutional relations in development partnerships the land development corporation and the hong kong government prior to 1997 this paper interprets and develops contemporary notions of partnership in relation to hong kong s land development corporation it demonstrates how such agencies are likely to become overdependent on their private sector partners or ineffective in policy delivery unless endowed with adequate powers and resources in this context it suggests that the ldc s capacity to promote urban renewal was undermined particularly by the institutional requirement to assemble redevelopment sites in multiple ownership principally through negotiation while seeking to explain this weakness in relation to the socio cultural context of hong kong it warns that in applying the western experience of partnership elsewhere full account must be taken of local circumstances and constraints

the effects of school spending on educational and economic outcomes evidence from school finance reforms since the coleman report many have questioned whether public school spending affects student outcomes the school finance reforms that began in the early 1970s and accelerated in the 1980s caused dramatic changes to the structure of k 12 education spending in the united states to study the effect of these school finance reform induced changes in public school spending on long run adult outcomes we link school spending and school finance reform data to detailed nationally representative data on children born between 1955 and 1985 and followed through 2011 we use the timing of the passage of court mandated reforms and their associated type of funding formula change as exogenous shifters of school spending and we compare the adult outcomes of cohorts that were differentially exposed to school finance reforms depending on place and year of birth event study and instrumental variable models reveal that a 10 increase in per pupil spending each year for all 12 years of public school leads to 0 31 more completed years of education about 7 higher wages and a 3 2 percentage point reduction in the annual incidence of adult poverty effects are much more pronounced for children from low income families exogenous spending increases were associated with notable improvements in measured school inputs including reductions in student to teacher ratios increases in teacher salaries and longer school years jel codes j10 i20 h7

disease and development the effect of life expectancy on economic growth we exploit the major international health improvements from the 1940s to estimate the effect of life expectancy on economic performance we construct predicted mortality using preintervention mortality rates from various diseases and dates of global interventions predicted mortality has a large impact on changes in life expectancy starting in 1940 but no effect before 1940 using predicted mortality as an instrument we find that a 1 percent increase in life expectancy leads to a 1 7 2 percent increase in population life expectancy has a much smaller effect on total gdp however consequently there is no evidence that the large increase in life expectancy raised income per capita

does privatisation of vocational rehabilitation improve labour market opportunities evidence from a field experiment in sweden this paper analyses if privatisation of vocational rehabilitation can improve labour market opportunities for individuals on long term sickness absence we use a field experiment performed by the p

disease and development evidence from hookworm eradication in the american south this study evaluates the economic consequences of the successful eradication of hookworm disease from the american south the hookworm eradication campaign c 1910 began soon after i the discovery that a variety of health problems among southerners could be attributed to the disease and ii the donation by john d rockefeller of a substantial sum to the effort the rockefeller sanitary commission rsc surveyed infection rates in the affected areas eleven southern states and found that an average of forty percent of school aged children were infected with hookworm the rsc then sponsored treatment and education campaigns across the region follow up studies indicate that this campaign substantially reduced hookworm disease almost immediately the sudden introduction of this treatment combines with the cross area differences in pre treatment infection rates to form the basis of the identification strategy areas with higher levels of hookworm infection prior to the rsc experienced greater increases in school enrollment attendance and literacy after the intervention this result is robust to controlling for a variety of alternative factors including differential trends across areas changing crop prices shifts in certain educational and health policies and the effect of malaria eradication no significant contemporaneous results are found for adults who should have benefited less from the intervention owing to their substantially lower prior infection rates a long term follow up of affected cohorts indicates a substantial gain in income that coincided with exposure to hookworm eradication i also find evidence that eradication increased the return to schooling

urban regeneration and the development industry healey p 1991 urban regeneration and the development industry reg studies 25 97 108 this paper examines a key assumption of urban policy in britain in the 1980s this assumption is that urba

the effect of school quality on educational attainment and wages the paper examines the effects of school pupil teacher ratios and type of school on educational attainment and wages using the british national child development survey ncds the ncds is a panel survey which has followed a cohort of individuals born in march 1958 and has a rich set of background variables recorded throughout the individual s life the results suggest that once we control for ability and family background the pupil teacher ratio has no impact on educational qualifications or on male wages it has an impact on women s wages at the age of 33 particularly those of low ability we also find evidence that those who attend selective schools have better educational outcomes and in the case of men higher wages at the age of 33 the impact is higher for the type of individuals who are less likely not to attend selective schools but for whom a comparison group does exist among those attending

human capital pricing equations with an application to estimating the effect of schooling quality on earnings this paper formulates and estimates alternative models for the pricing of labor services we present economic models that rationalize empirical specifications in the literature and we offer evidence on the validity of those specifications widely used efficiency units models of labor services are inconsistent with evidence from the u s labor market a model of heterogeneous skills provides a more accurate description of earnings data we present evidence that the pursuit of comparative advantage and selective migration are important features of the u s labor market when these features are included in the model the only support for an effect of schooling quality on earnings is through the return to college education three interactions are empirically important in explaining log wage equations a between schooling quality and education b between regional labor market shocks and education and c between region of residence and regionof birth because of this third interaction which can arise from comparative advantage in the labor market no unique quality effect on returns to education can be defined independently of the market in which it is used

the evolution of social mobility norway during the twentieth century we document trends in social mobility in norway using intergenerational income elasticities the associations between the income percentiles of fathers and sons and brother correlations the results of all approaches suggest that social mobility increased substantially between cohorts born in the early 1930s and the early 1940s father son associations remained stable for cohorts born after world war ii while brother correlations continued to decline the relationship between father and son income percentile ranks is highly non linear for early cohorts but it approaches linearity over time we discuss increasing educational attainment among low and middle income families as a possible mechanism underlying these trends

long term impacts of class size in compulsory school how does class size in compulsory school affect people s long run education and earnings we use maximum class size rules and norwegian administrative registries allowing us to observe outcomes up to age 48 we do not find any indication of beneficial effects of class size reduction in compulsory school for a one person reduction in class size we reject effects on income as small as 0 12 percent in primary school and 0 15 percent in middle school population differences in parental background school size or competitive pressure do not appear to reconcile our findings with previous studies

is the threat of reemployment services more effective than the services themselves evidence from random assignment in the ui system we examine the effect of the worker profiling and reemployment services system this program profiles unemployment insurance ui claimants to determine their probability of benefit exhaustion and then provides mandatory employment and training services to claimants with high predicted probabilities using a unique experimental design we estimate that the program reduces mean weeks of ui benefit receipt by about 2 2 weeks reduces mean ui benefits received by about 143 ana increases subsequent earnings by over 1 050 most of the effect results from a sharp increase in early ui exits in the treatment group relative to the control group jel j650

quasi experimental estimates of the effect of class size on achievement in norway using a comprehensive norwegian administrative database we exploit independent quasi experimental methods to estimate the effect of class size on student achievement at the end of lower secondary school identification based on maximum class size rules and population variation and variations on these methods give very similar estimates we cannot reject that the class size effect is equal to zero and can rule out effects as small as 1 5 percent of a standard deviation for a one student change in class size during three consecutive years

experimental estimates of education production functions this paper analyzes data on 11 600 students and their teachers who were randomly assigned to different size classes from kindergarten through third grade statistical methods are used to adjust for nonrandom attrition and transitions between classes the main conclusions are 1 on average performance on standardized tests increases by four percentile points the first year students attend small classes 2 the test score advantage of students in small classes expands by about one percentile point per year in subsequent years 3 teacher aides and measured teacher characteristics have little effect 4 class size has a larger effect for minority students and those on free lunch 5 hawthorne effects were unlikely

the institutional structure of a property market in inland china chongqing this paper contributes to the understanding of china s urban development by examining the institutional structure of a property market in an inland city chongqing data were collected from three recent projects through field reconnaissance and interviews a framework of institutional analysis was used in discussing and interpreting the data our analyses revealed an emerging property market with dynamic and evolving new institutions in inland china in this new market a variety of actors with different roles and interests in the property development process had come into play formal and informal rules governing the development process had been evolving although with a time lag the rapid formation of chongqing s property market was similar to that in the coastal cities nevertheless in contrast to the coastal cities this time lag led to a property market which was more dependent on state involvement chongqing s property market was dominated by government not only because the government formulated d

family background and income during the rise of the welfare state brother correlations in income for swedish men born 1932 1968 we investigate if the association between family background and income in sweden has changed for men born between 1932 and 1968 our main finding is that the share of the variance in long run income that is attributable to family background the so called brother correlation in income has fallen by some 17 from 0 49 for the cohorts of brothers born in the early 1930s to below 0 32 for the cohorts born around 1950 from then on the correlations have inched back up to around 0 37 we report suggestive evidence that the decline is driven by changes in education

early life health and cognitive function in old age child health in the united states improved dramatically over the twentieth century data from the national center for health statistics indicate the infant mortality rate was 23 times greater in 1900 than in 2004 the mortality rate of one to four year old children although lower in absolute terms had a larger proportionate decline the value in 1900 was 66 times that in 2004 the proximate cause of the mortality decline was a reduction in infectious disease between 1900 and 1998 the percentage of deaths of children age 1 to 19 due to infectious disease is estimated to have declined from 61 6 percent to 2 percent bernard guyer et al 2000 major causes of child death included diarrhea pneumonia and other respiratory infections diphtheria typhoid measles scarlet fever whooping cough and tuberculosis guyer et al 2000 the mortality decline was accompanied by reductions in morbidity among surviving children there were also declines in the prevalence of a host of illnesses such as hookworm and trachoma which were not deadly but which impaired children s quality of life c hoyt bleakley 2007 shannen k allen and richard d semba 2002 early life exposures to infectious disease may also have adverse effects on health and well being into old age if true then the benefits of the twentieth century decline in infectious disease in the united states are still being realized we examine whether the disease environments experienced by american children in the first half of the twentieth century are associated with their cognitive abilities at older ages we match region level historical data on mortality from a variety of infectious diseases as well as total infant mortality with information on the cognitive function of older americans followed by the health and retirement study hrs we find evidence that the burden of disease in early life measured using either mortality rates by cause or the overall infant mortality rate is significantly associated with performance on cognitive tests in old age

does school quality matter returns to education and the characteristics of public schools in the united states this paper estimates the effects of school quality measured by the pupil teacher ratio average term length and relative teacher pay on the rate of return to education for men born between 1920 and 1949 using earnings data from the 1980 census we find that men who were educated in states with higher quality schools have a higher return to additional years of schooling rates of return are also higher for individuals from states with better educated teachers and with a higher fraction of female teachers holding constant school quality measures however we find no evidence that parental income or education affects average state level rates of return

clicking on heaven s door the effect of immigrant legalization on crime we estimate the eect of legalization on the crime rate of immigrants by exploiting the italian policy framework as an ideal regression discontinuity design xed quotas of residence permits are available each year applications must be submitted electronically on specic click days and they are processed on a rst come rst served basis until the available quotas are exhausted by matching data on applicants including the timing of applications in milliseconds with restricted use criminal records for the year before and after click days we show that obtaining legal status reduces the probability of being reported for having committed a serious crime by 0 6 percentage points on average on a baseline crime rate of 1 percent this eect is driven by applicants that are allegedly employed by other immigrants as domestic workers but are most likely unemployed who exhibit the highest crime rate in the year before click days as well as the greatest reduction in crime after obtaining legal status by contrast applicants sponsored by rms exhibit a very low crime rate both before and after click days we conclude that undocumented immigrants confronting worse labor market opportunities are at a higher risk of committing crimes while they are also more responsive to legalization

how does your kindergarten classroom affect your earnings evidence from project star in project star 11 571 students in tennessee and their teachers were randomly assigned to classrooms within their schools from kindergarten to third grade this article evaluates the long term impacts of star by linking the experimental data to administrative records we first demonstrate that kindergarten test scores are highly correlated with outcomes such as earnings at age 27 college attendance home ownership and retirement savings we then document four sets of experimental impacts first students in small classes are significantly more likely to attend college and exhibit improvements on other outcomes class size does not have a significant effect on earnings at age 27 but this effect is imprecisely estimated second students who had a more experienced teacher in kindergarten have higher earnings third an analysis of variance reveals significant classroom effects on earnings students who were randomly assigned to higher quality classrooms in grades k 3 as measured by classmates end of class test scores have higher earnings college attendance rates and other outcomes finally the effects of class quality fade out on test scores in later grades but gains in noncognitive measures persist

adaptation as information restriction the hot stove effect individuals and social systems are often portrayed as risk averse and resistant to change such propensities are characteristically attributed to individual organizational and cultural traits such as risk aversion uncertainty avoidance discounting and an unwillingness to change this paper explores an alternative interpretation of such phenomena we show how the reproduction of successful actions inherent in adaptive processes such as learning and competitive selection and reproduction results in a bias against alternatives that initially may appear to be worse than they actually are in particular learning and selection are biased against both risky and novel alternatives because the biases are products of the tendency to reproduce success that is inherent in the sequential sampling of adaptation they are reduced whenever the reproduction of success is attenuated in particular when adaptation is slowed made imprecise or recalled less reliably the propensity to engage in risky and new activities is increased these protections against the error of rejecting potentially good alternatives on inadequate experiential evidence are costly however they increase the likelihood of persisting with alternatives that are poor in the long run as well as in the short run

losing heart the effect of job displacement on health job reallocation is considered a key characteristic of well functioning labor markets as more productive firms grow and less productive ones contract or close despite its potential benefits for t

life cycle variations in the association between current and lifetime income replication and extension for sweden we apply haider and solon s generalized errors in variables model to swedish income tax data to produce estimates of the association between current and lifetime income our estimates demonstrate strong life cycle patterns this implies that the widespread use of current income as a proxy for lifetime income leads to inconsistent parameter estimates i e life cycle bias even when the proxy is used as the dependent variable estimates for comparable cohorts of swedish and american men demonstrate surprising similarities there are however significant gender and cohort differences in this association that lead to statistically significant and quantitatively meaningful differences in life cycle biases

disease control and inequality reduction evidence from a tuberculosis testing and vaccination campaign this article examines the economic impact of a tuberculosis control program launched in norway in 1948 in the 1940s norway had one of the highest tuberculosis infection rates in europe affecting about 85 of the inhabitants to lower the disease burden the norwegian government launched a large scale tuberculosis testing and vaccination campaign that substantially reduced tuberculosis infection rates among children we find that cohorts in school during and after the campaign in municipalities with high tuberculosis prevalence gained more in terms of education earnings longevity and height following this public health intervention furthermore the gains from the disease control program are not limited to the initially treated cohorts but also affect their children the results also suggest that individuals from a low socioeconomic background benefited more from the intervention and we present new evidence that a narrowing of the gap in childhood health can lead to a reduction in socioeconomic inequalities in adulthood

independent schools and long run educational outcomes evidence from sweden s large scale voucher reform this paper evaluates average educational performance effects of an expanding independentschool sector at the compulsory level by assessing a radical voucher reform that was implemented in sweden in 1992 starting from a situation where all public schools were essentially local monopolists the degree of independent schools has developed very differently across municipalities over time as a result of this reform we regress the change in educational performance outcomes on the increase in the share of independent school students between swedish municipalities we find that an increase in the share of independent school students improves average performance at the end of compulsory school as well as long run educational outcomes we show that these effects are very robust with respect to a number of potential issues such as grade inflation and pre reform trends however for most outcomes we do not detect positive and statistically significant effects until approximately a decade after the reform this is notable but not surprising given that it took time for independent schools to become more than a marginal phenomenon in sweden we do not find positive effects on school expenditures hence the educational performance effects are interpretable as positive effects on school productivity we further find that the average effects primarily are due to external effects e g school competition and not that independent school students gain significantly more than public school students

the long run effects of reducing early school tracking abstract this paper studies the effects of a french detracking reform on individuals long run education and labor market outcomes the reform delayed the age at which students were separated into vocational and general education by two years from age 11 to 13 the assignment of students to different types of education at age 11 was instead replaced by ability grouping whereby students followed a common general education curriculum but were divided into different classrooms based on their academic achievement using a regression discontinuity design i find that the reform raised individuals level of education and increased their wages by 6 at ages 40 to 45 these effects are concentrated among men and individuals from low socioeconomic backgrounds however the reform solely benefited individuals whose parents were born in france as it did not significantly affect children of immigrants educational and labor market outcomes

the more the merrier the effect of family size and birth order on children s education there is an extensive theoretical literature that postulates a tradeoff between child quantity and quality within a family however there is little causal evidence that speaks to this theory using a rich dataset on the entire population of norway over an extended period of time we examine the effects of family size and birth order on the educational attainment of children while we find a negative correlation between family size and children s education when we include indicators for birth order and or use twin births as an instrument family size effects become negligible in addition birth order has a significant and large negative effect on children s education we also study adult earnings employment and teenage childbearing and find strong evidence for birth order effects with these outcomes particularly among women these findings suggest the need to revisit economic models of fertility and child production focusing not only on differences across families but differences within families as well

economic activity and the spread of viral diseases evidence from high frequency data viruses are a major threat to human health and given that they spread through social interactions represent a costly externality this article addresses three main questions i what are the unintended consequences of economic activity on the spread of infections ii how efficient are measures that limit interpersonal contacts iii how do we allocate our scarce resources to limit the spread of infections to answer these questions we use novel high frequency data from france on the incidence of a number of viral diseases across space for different age groups over a quarter of a century we use quasi experimental variation to evaluate the importance of policies reducing interpersonal contacts such as school closures or the closure of public transportation networks while these policies significantly reduce disease prevalence we find that they are not cost effective we find that expansions of transportation networks have significant health costs in increasing the spread of viruses and that propagation rates are pro cyclically sensitive to economic conditions and increase with inter regional trade jel codes i12 i15 i18 h51 c23

does head start improve children s life chances evidence from a regression discontinuity design this paper exploits a new source of variation in head start funding to identify the program s effects on health and schooling in 1965 the office of economic opportunity oeo provided technical assistance to the 300 poorest counties to develop head start proposals the result was a large and lasting discontinuity in head start funding rates at the oeo cutoff for grant writing assistance we find evidence of a large drop at the oeo cutoff in mortality rates for children from causes that could be affected by head start as well as suggestive evidence for a positive effect on educational attainment i introduction head start was established in 1965 as part of the war on poverty to provide preschool health and other social services to poor children age three to five and their families and currently serves over 900 000 children each year at a cost of around 7 billion hhs 2006 this paper provides new evidence on the effects of the head start program on schooling and health by drawing on a new source of variation in program funding spe

school tracking and intergenerational income mobility evidence from the finnish comprehensive school reform abstract this paper estimates the effect of a major education reform on intergenerational income mobility the finnish comprehensive school reform of 1972 1977 replaced the old two track school system with a uniform nine year comprehensive school and shifted the selection of students to vocational and academic tracks from age 11 to age 16 we estimate the effect of this reform on the intergenerational income elasticity using a representative sample of males born between 1960 and 1966 the identification strategy relies on a differences in differences approach and exploits the fact that the reform was implemented gradually across the country during a six year period the results indicate that the reform reduced the intergenerational income elasticity by 23 from the pre reform elasticity of 0 30 to post reform elasticity of 0 23

information overload and the internationalization process model an implementation attempt this article presents a theoretical equation set based on the information interactions that result in experiential learning we attempt to link our equation set to the uppsala internationalization process model in order to quantify information overload and operationalize the uppsala model under longitudinal time series settings the internationalization process has generated an increase in the diversity and overall quantity of information resulting in an increase of the variation and amount of information that a firm needs to process this challenges a firm s capacity to simultaneously expand and learn market knowledge is acquired essentially through current business activities all of which proceed from a firm s market experience to generate experiential knowledge market experience is situation specific and therefore difficult to generalize nonetheless firms tend to use general failsafe proven courses of action when confronted with new situations in an effort to reduce diverging larger quantities of incoming and often discrepant information information overload refers to situations where the quantity of information pending analysis and consideration compels a firm to revert to older and trusted information processing methods instead of seeking adaptive solutions clearly adopting a short term efficiency posture leading to suboptimal performance

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

the uppsala internationalization process model revisited from liability of foreignness to liability of outsidership the uppsala internationalization process model is revisited in the light of changes in business practices and theoretical advances that have been made since 1977 now the business environment is viewed as a web of relationships a network rather than as a neoclassical market with many independent suppliers and customers outsidership in relation to the relevant network more than psychic distance is the root of uncertainty the change mechanisms in the revised model are essentially the same as those in the original version although we add trust building and knowledge creation the latter to recognize the fact that new knowledge is developed in relationships

achieving escape velocity neighborhood and school interventions to reduce persistent inequality abstract this paper reviews the evidence on the efficacy of neighborhood and school interventions in improving the long run outcomes of children growing up in poor families we focus on studies exploiting exogenous sources of variation in neighborhoods and schools and which examine at least medium term outcomes higher quality neighborhoods improve family safety adult subjective well being and health and girls mental health but they have no detectable impact on youth human capital labor market outcomes or risky behaviors in contrast higher quality schools can improve children s academic achievement and can have longer term positive impacts of increasing educational attainment and earnings and reducing incarceration and teen pregnancy