additional aspects of rational insurance purchasing the purchase of insurance provides an individual with the ability to shift risk associated with either timeless or temporal uncertain prospects see dreze and modigliani 1972 previous insurance decision analysis can be further divided into cases in which the insurance contract is exogenously specified see mossin 1968 smith 1968 and cases in which the optimal form of contract is to be determined see raviv 1979 brennan and solanki 1981 this note is concerned with extending some of the results for timeless uncertain prospects with the insurance contract exogenously specified many of the properties associated with the purchase of insurance for timeless uncertain prospects are analyzed by mossin 1968 for different forms of contracts see also gould 1969 utilizing the arrow pratt measure of absolute risk aversion the effect of wealth upon the optimal amount of insurance is determined for the different forms of contracts recent work by ross 1981 demonstrates that in situations where individuals face more than one timeless uncertain prospect and they can purchase insurance only for a subset of these prospects then a more risk averse individual in the arrow pratt this paper examines the use of the arrowpratt and ross measures of risk aversion it is shown that in situations where the individual faces more than one uncertain prospect and can purchase insurance only for a subset of these prospects then in many cases the arrow pratt and ross measures of risk aversion are not sufficient to describe the behavior of the individual in purchasing insurance

sacrifice and stigma reducing free riding in cults communes and other collectives this paper presents an economic analysis of religious behavior that accounts for the continuing success of groups with strange requirements and seemingly inefficient prohibitions the analysis does not presuppose any special motives for religious activity rather religion is modeled as a club good that displays positive returns to participatory crowding the analysis demonstrates that efficient religions with perfectly rational members may benefit from stigma self sacrifice and bizarre behavioral restrictions the model also addresses sacrifice in nonreligious social clubs fraternities communes political parties work groups and families

beliefs about the determinants of success and employment protection abstract we show that part of the international variation in employment laws is due to different beliefs about the impact of hard work as opposed to luck and connections on success in societies where a greater proportion of people relate their life prospects to chance and connections stronger employment protection is in place the prevalence of such beliefs is likely to hamper labor market reforms

the price of redemption sin penance and marginal deterrence abstract the threat of loss of the afterlife as punishment for sin is a fundamental tenet of nearly all religious traditions most religions also contain a notion of redemption or forgiveness of sin but they differ as to whether or not redemption requires atonement or penance the possibility of redemption allows sinners to be rehabilitated but in so doing potentially undermines the incentive for them to refrain from sin in the first place we show that a properly calibrated form of penance as the price of redemption can both deter people from committing early sins and provide an incentive for those who have previously sinned to refrain from committing further sins in other words it achieves marginal deterrence such a system requires strong belief in the afterlife when belief is moderate we show that a regime of free redemption may be optimal we conclude by examining the implications of the analysis for after death redemption the catholic church s practice of selling redemption indulgences and the protestant doctrine of predestination which was in part a reaction to the church s commodification of redemption

printing and protestants an empirical test of the role of printing in the reformation the causes of the protestant reformation have long been debated this paper seeks to revive and econometrically test the theory that the spread of the reformation is linked to the spread of the printing press i test this theory by analyzing data on the spread of the press and the reformation at the city level an econometric analysis that instruments for omitted variable bias with a city s distance from mainz the birthplace of printing suggests that cities with at least one printing press by 1500 were at minimum 29 percentage points more likely to be protestant by 1600

sect subsidy and sacrifice an economist s view of ultra orthodox jews israeli ultra orthodox men study full time in yeshiva until age 40 on average why do fathers with families in poverty choose yeshiva over work draft deferments subsidize yeshiva attendance yet attendance typically continues long after exemption fertility rates are high tfr 7 6 and rising a social interaction approach explains these anomalies yeshiva attendance signals commitment to the community which provides mutual insurance to members prohibitions strengthen communities by effectively taxing real wages inducing high fertility historically the incursion of markets into traditional communities produces ultra orthodoxy subsidies induce dramatic reductions in labor supply and unparalleled increases in fertility illustrating extreme responses social groups may have to interventions

politics and economics in weak and strong states abstract while much research in political economy points out the benefits of limited government political scientists have long emphasized the problems created in many less developed nations by weak states which lack the power to tax and regulate the economy and to withstand the political and social challenges from non state actors i construct a model in which the state apparatus is controlled by a self interested ruler who tries to divert resources for his own consumption but who can also invest in socially productive public goods both weak and strong states create distortions when the state is excessively strong the ruler imposes such high taxes that economic activity is stifled when the state is excessively weak the ruler anticipates that he will not be able to extract rents in the future and underinvests in public goods i show that the same conclusion applies in the analysis of both the economic power of the state i e its ability to raise taxes and its political power i e its ability to remain entrenched from the citizens i also discuss how under certain circumstances a different type of equilibrium which i refer to as consensually strong state equilibrium can emerge whereby the state is politically weak but is allowed to impose high taxes as long as a sufficient fraction of the proceeds are invested in public goods the consensually strong state might best correspond to the state in oecd countries where taxes are high despite significant control by the society over the government

religion and work micro evidence from contemporary germany abstract using micro data from contemporary germany this paper studies the connection between protestantism and modern day labor market outcomes to address the endogeneity in self declared religion i exploit a provision in a sixteenth century peace treaty which determined the geographic distribution of catholics and protestants reduced form and instrumental variable estimates provide no evidence of an effect of protestantism on hourly wages however relative to their catholic counterparts protestants do appear to work longer hours the patterns in the data are difficult to reconcile with explanations based on institutional factors or religious differences in human capital acquisition religious differences in individuals values however can account for most of the estimated effects

occupational choice and the spirit of capitalism the british industrial revolution triggered a socioeconomic transformation whereby the landowning aristocracy was replaced by industrial capitalists rising from the middle classes as the economically dominant group we propose a theory of preference formation under financial market imperfections that can account for this pattern parents shape their children s preferences in response to economic incentives middle class families in occupations requiring effort skill and experience develop patience and a work ethic whereas upper class families relying on rental income cultivate a refined taste for leisure these class specific attitudes which are rooted in the nature of preindustrial professions become key determinants of success once industrialization transforms the economic landscape i introduction the industrial revolution was more than capital accumulation and growth it also set off a social and political transformation that redefined hierarchies in society and reshaped the distribution of income and wealth before the onset of industrialization in eighteenth century britain wealth and political power were associated with the possession of land over the course of the nineteenth century a new class of entrepreneurs and businessmen emerged as the economic elite for the most part the members of this class rose from humble beginnings and had their social origins in the urban middle classes the landed elite was left behind and eventually lost its political and economic predominance many observers of the time linked this reversal in economic fortunes to differences in values attitudes and ultimately preferences across social classes there are countless examples both in scholarly and in fictional writing of portrayals of members of the landowning class as averse to work unwilling to save ill disposed tocommercialactivity andunabletoconsidermoneyassomething

immigration and the diffusion of technology the huguenot diaspora in prussia abstract this paper analyzes long term effects of skilled worker immigration on productivity for the huguenot migration to prussia in 1685 religiously persecuted french huguenots settled in brandenburg prussia and compensated for population losses due to plagues during the thirty years war we combine huguenot immigration lists from 1700 with prussian firm level data on the value of inputs and outputs in 1802 in a unique database to analyze the effects of skilled immigration to places with underused economic potential exploiting this settlement pattern in an instrumental variable approach we find substantial long term effects of huguenot settlement on the productivity of textile manufactories jel j24 j61 l67 n33 n63 o33 o47

people s opium religion and economic attitudes since max weber there has been an active debate on the impact of religion on people s economic attitudes much of the existing evidence however is based on cross country studies in which this impact is confounded by differences in other institutional factors we use the worldvalues surveys to id entify the relationship between intensity of religious beliefs and economic attitudes controlling for country fixed effects we study several economic attitudes towardcooperation the government working women legal rules thriftiness andthe market economy we also distinguish across religious denominations differentiating on whether a religion is dominant in a country we find that on average religious beliefs are associated with good economic attitudes where good is defined as conducive to higher per capita income andgrowth yet religious people tendto be more racist andless favorable with respect to working women these effects differ across religious denominations overall we find that christian religions are more positively associatedwith attitudes conducive to economic growth r 2003 elsevier science b v all rights reserved jel classification a1 e0 n4 z1

law state power and taxation in islamic history abstract the ruler s power varied greatly in islamic history over time and space we explain these variations through a political economy approach to public finance identifying factors affecting economic power and its constraints an influential interest group capable of affecting the ruler s power was the legal community ulam this community could increase the ruler s ability to extract a surplus from the citizenry by conferring legitimacy thereby lowering the cost of collecting taxes it could also limit power through legal constraints on taxation we show how changes in legitimacy and legal constraints affected the economic power of rulers in representative episodes of islamic history and identify general trends and dynamic processes underlying the relationship between the state and the legal community

economic and security consequences of supreme values islamic societies have in contemporary times lagged western societies in income growth and human development indicators the supreme values of radical islam further de prioritize economic achievement and impose self deprivation on own populations this paper investigates the reasons for economic outcomes under islam contemporary illustrations are also provided of the self deprivation predicted from pursuit of the supreme value objectives of radical islam the self deprivation is placed in a rent seeking context

religion religiosity and educational attainment evidence from the compulsory education system in england this paper investigates the effect of religion on the educational attainment of pupils in their final year of compulsory education in england the results show that pupils that identify with any re

luther and the girls religious denomination and the female education gap in nineteenth century prussia martin luther urged each town to have a girls school so that girls would learn to read the gospel thereby evoking a surge of building girls schools in protestant areas using county and town level data from the first prussian census of 1816 we show that a larger share of protestants decreased the gender gap in basic education this result holds when using only the exogenous variation in protestantism due to a county s or town s distance to wittenberg the birthplace of the reformation similar results are found for the gender gap in literacy among the adult population in 1871

values and marginal preferences in international business in a recent paper in this journal maseland and van hoorn argued that values surveys tend to conflate values and marginal preferences this assertion has been challenged by brewer and venaik who claim that the wording of most survey items does not suggest that these elicit marginal preferences this commentary responds to their claim and restates our original argument we stress that the distinction between values and marginal preferences is a conceptual rather than a semantic issue conflation of the two is a problem of stated preferences methods in general regardless of question formats what is more we argue that support for the marginal preferences interpretation of values survey data does not come from the specific wording of questions used in surveys but from a growing number of paradoxical relations between values ratings and outcomes in values research implications are twofold first we argue that in order to measure values we need to look at alternatives to the stated preferences approach such as revealed preferences and experienced preferences of which the latter seems most promising second we find that values surveys eliciting marginal preferences are useful for understanding and predicting differences in behavior in a given context

the intergenerational transmission of risk and trust attitudes recent theories endogenize the attitude endowments of individuals assuming that they are shaped by the attitudes of parents and other role models this paper tests empirically for the relevance of three aspects of the attitude transmission process highlighted in this theoretical literature 1 transmission of attitudes from parents to children 2 an impact of prevailing attitudes in the local environment on child attitudes and 3 positive assortative mating of parents which enhances the ability of a parent to pass on his or her attitudes to the child we focus on two fundamentally important attitudes willingness to take risks and willingness to trust others we find empirical support for all three aspects providing an empirical underpinning for the literature an investigation of underlying mechanisms shows that socialization is important in the transmission process various parental characteristics and aspects of family structure are found to strengthen the socialization process with implications for modeling the socialization production function and for policies focused on affecting children s non cognitive skills the paper also provides evidence that the transmission of risk and trust attitudes affects a wide variety of child outcomes implying a potentially large total effect on children s economic situation

the power to tax analytical foundations of a fiscal constitution preface 1 taxation in constitutional perspective 2 natural government a model of leviathan 3 constraints on base and rate structure 4 the taxation of commodities 5 taxation through time income taxes capital taxes and public debt 6 money creation and taxation 7 the disposition of public revenues 8 the domain of politics 9 open economy federalism and taxing authority 10 toward authentic tax reform prospects and prescriptions epilogue notes selected bibliography index

religion and economy religion has a two way interaction with political economy with religion viewed as a dependent variable a central question is how economic development and political institutions affect religious participation and beliefs with religion viewed as an independent variable a key issue is how religiosity affects individual characteristics such as work ethic honesty and thrift and thereby influences economic performance in this paper we sketch previous studies of this two way interaction but focus on our ongoing quantitative research with international data

the design of an optimal insurance policy almost every phase of economic behavior is affected by uncertainty the economic system has adapted to uncertainty by developing methods that facilitate the reallocation of risk among individuals and firms the most apparent and familiar form for shifting risks is the ordinary insurance policy previous insurance decision analyses can be divided into those in which the insurance policy was exogenously specified see john gould jan mossin and vernon smith and those in which it was not see karl borch 1960 and kenneth arrow 1971 1973 in this paper the pioneering work of borch and arrow the derivation of the optimal insurance contract form from the model is synthesized and extended

legal theories of financial development this paper describes and empirically ex amines legal theories of international differences in financial development the law and finance theory stresses that legal traditions differ in terms of 1 their emphasis on the rights of private property owners vis a vis the state and 2 their ability to adapt to changing commercia l and financial conditions so that historically determined legal traditions shape financial deve lopment today other theories reject the centrality of legal tradition in accounting for cross country differences in financial development the results are broadly consistent with legal th eories of financial development though it is difficult to identify the precise channel through which legal tradition influences financial development

every catholic child in a catholic school historical resistance to state schooling contemporary private competition and student achievement across countries nineteenth century catholic doctrine strongly opposed state schooling we show that countries with larger shares of catholics in 1900 but without a catholic state religion tend to have larger shares of privately operated schools even today we use this historical pattern as a natural experiment to estimate the causal effect of contemporary private competition on student achievement in cross country student level analyses our results show that larger shares of privately operated schools lead to better student achievement in mathematics science and reading and to lower total education spending even after controlling for current catholic shares

religiosity and income a panel cointegration and causality analysis abstractin this article we examine the long run relationship between religiosity and income using retrospective data on church attendance rates for a panel of countries from 1930 to 1990 we employ panel cointegration and causality techniques to control for omitted variable and endogeneity bias and test for the direction of causality we show that there exists a negative long run relationship between the level of religiosity measured by church attendance and the level of income measured by the log of gdp per capita the result is robust to alternative estimation methods potential outliers different samples different measures of church attendance and alternative specifications of the income variable long run causality runs in both directions higher income leads to declining religiosity and declining religiosity leads to higher income

luther and suleyman this paper emphasizes that the evolution of religious institutions in europe was influenced by the expansionary threat posed by the ottoman empire between the mid 15th century and the early 17th century various historical accounts have suggested that the ottomans rise helped the protestant reform movement as well as its various offshoots such as zwinglianism anabaptism and calvinism survive their infancy and mature utilizing a comprehensive dataset on violent conflicts for the period between 1451 and 1650 i find strong empirical support for the idea that ottoman military engagements in continental europe lowered the number and extent of violent conflicts among and within the european states ottomans influence in europe extended to the feud between the protestant reformers and the catholic establishment during the time between the birth of lutheranism and the end of the thirty years war the likelihood and timing of military engagements between the protestant reformers and the counter reformation forces depended negatively and statistically significantly on ottomans military activities in europe

the design of an optimal insurance policy note in an article in this review arthur raviv 1979 examines pareto optimal insurance policies when an insurer incurs settlement costs c induced by indemnity i for loss x raviv s main result is that a necessary and sufficient condition for the pareto optimal deductible to equal zero is c i 0 this implies that deductible policies give the best tradeoff between risk sharing and economizing on costly claim settlements since in practice these costs are significant the theorem is of considerable importance among others this has been recognized by robert townsend 1979 michael brennan and ray solanki 1981 david mayers and clifford smith 1981 gur huberman mayers and smith 1983 harris schlesinger 1981 and stuart turnbull 1983 the theorem is correct but raviv s proof is not in this note a corrected proof for the theorem is given the corrected proof is important in itself because it allows for a generalization to a greater variety of transactions costs than has previously been considered see my 1984 paper for details section i develops the setting for the problem and the notation to be subsequently used raviv s error and the corrected proof are presented in section ii

institutions for financial development what are they and where do they come from abstract among the fundamental causes of long run economic performance differences in institutions have received considerable attention in recent years at the same time a large body of theoretical and empirical work shows that financial development can have a big effect on economic performance this raises the more fundamental question as to why some countries have developed financial markets while others do not this paper reviews the theoretical and empirical research on this issue and shows that one of the channels whereby better institutions may have an effect on economic development is through the consolidation of larger and better financial markets an issue that is left aside in this paper relates to what regulations and policies lead to better functioning capital markets at some level one can think of regulations and policies as particular types of institutions nonetheless institutional problems are deeper causes leading to poor economic performance bad policies might simply be part of the channels through which they influence performance thus addressing the question of what determines the emergence of good institutions i e institutions that promote financial development seems particularly important recent research providing some answers to this question is also reviewed

identifying the causal effect of income on religiosity using the earned income tax credit abstract how do economic conditions income and the generosity of social insurance affect religious behavior this paper provides novel evidence for the united states using variation in earned income tax credit benefits across states over time and by number of children in the raw data income and religiosity have a trivial relationship in contrast the instrumental variables strategy shows that increases in income from the eitc are found to sizably reduce religious attendance among low income individuals among individuals who attend the results indicate that an additional 1000 in annual income is associated with a decrease of roughly 1 service per year as compared to an average of 16 services per year the effect arises mainly along the intensive margin decreasing devout behavior and increasing more marginal attendance but having little impact on whether an individual participates at all or on beliefs there are also minimal effects on the occurrence and amount of contributions to religious organizations the results extend our understanding of the determinants of religiosity the relationship between governmental income support and religious behavior and the social effects of the earned income tax credit

rituals or good works social signaling in religious organizations we develop a model of social signaling of religiosity and cooperative behavior in religious organizations the model embeds a ritual based religious organization in which signaling arises through the use of costly rituals and a discipline based religious organization in which such signaling occurs through the monitoring of past behavior we use this framework to contrast positively and normatively these two forms of social signaling we show we develop a model of social signaling of religiosity and cooperative behavior in religious organizations the model embeds a ritual based religious organization in which signaling arises through the use of costly rituals and a discipline based religious organization in which such signaling occurs through the monitoring of past behavior we use this framework to contrast positively and normatively these two forms of social signaling we show that ritual based religions while using a costly and wasteful signal also imply a higher level of coordination of behavior in social interactions and a higher incidence of mutual cooperation our welfare analysis suggests that communities are more likely to support a switch to a discipline based religion if strategic complementarities are high and if there is sufficiently high level of public information about social behavior this accords with the success of calvin s reformation in switzerland and france a process characterized by the reduction of rituals along with the creation of institutions to monitor and publicize individuals behavior such as the consistory

why did the netherlands develop so early the legacy of the brethren of the common life this research establishes a link between the brethren of the common life bcl a religious community founded by geert groote in deventer in the late fourteenth century and the early economic development of the netherlands the bcl stimulated human capital accumulation the historical analyses show that the bcl contributed to the high rates of literacy to the high level of book production and to city growth in the netherlands these findings are supported by a set of ols regressions and further corroborated by 2sls estimates that use distance from deventer as an instrument for the presence of the bcl

was weber wrong a human capital theory of protestant economic history max weber attributed the higher economic prosperity of protestant regions to a protestant work ethic we provide an alternative theory protestant economies prospered because instruction in reading the bible generated the human capital crucial to economic prosperity we test the theory using county level data from late nineteenth century prussia exploiting the initial concentric dispersion of the reformation to use distance to wittenberg as an instrument for protestantism we find that protestantism indeed led to higher economic prosperity but also to better education our results are consistent with protestants higher literacy accounting for most of the gap in economic prosperity

the bicausal relation between religion and income in this article the relation between religion and income is investigated using a micro dataset for the netherlands religion is measured by religious membership and by participation instead of estimating a religion equation and an income equation separately joint regression is preferred since this generally yields more efficient estimates following the single equation approach both religious measures are found to decrease income significantly and income is found to affect religion negatively however these cross effects become insignificant once the equations are estimated simultaneously in contrast the effects of socio economic characteristics on religion and income hardly differ between the approaches

rational insurance purchasing consideration of contract nonperformance much of the analysis of rational insurance purchasing and hedging strategies has been undertaken on the basis of the expected utility hypothesis this decision framework has been used to reformulate the bernoulli principle that a risk averter rationally would fully insure at a fair premium other applications include the analysis of insurance at unfair premiums mossin 1968 and smith 1968 the effects of state dependent utility on the rational insurance purchase cook and graham 1977 the effects of risky background wealth doherty and schlesinger 1983 and mayers and smith 1983 and the design of the optimal insurance policy raviv 1979 such analyses have been conducted on the assumption that insurance policies are free of insolvency default risk this assumption stands in sharp contrast to the actuarial literature in which the insolvency risk or probability of ruin is a central focus of attention

which countries have state religions among 188 countries 72 had no state religion in 2000 1970 and 1900 58 had a state religion throughout and 58 had 1 or 2 transitions we use a hotelling spatial competition model to analyze the likelihood that the religion market would be monopolized similar forces influence a government s decision to establish a state religion consistent with the model the probability of state religion in 1970 and 2000 is increasing with the adherence rate to the main religion has a nonlinear relation with population and has little relation with per capita gdp the probability of state religion decreases sharply under communism but lagged communism has only a weak effect with costly adjustment for institutions the probability of state religion in 1970 or 2000 depends substantially on the status in 1900 this persistence is much stronger for countries with no major regime change than for countries with such a change

some stronger measures of risk aversion in the small and the large with applications the arrow pratt measures of risk aversion for von neumann morgenstern utility functions have become workhorses for analyzing problems in the microeconomics of uncertainty they have been used to characterize the qualitative properties of demand in insurance and asset markets to examine the properties of risk taking in taxation models and to study the interaction between risk and life cycle savings problems to name just a few applications equally importantly they have generated the linear risk tolerance class of utility functions which has provided canonical examples in such diverse areas as portfolio theory and the theory of teams despite these successes there have been a number of areas for which the results have been weaker than hoped it is natural to use the risk aversion measures to compare the behavior of individuals in risky choice situations for example consider the individual portfolio choice problem in a two asset world with a riskless asset and a risky asset if individual a has a uniformly higher arrow pratt coefficient of risk aversion than individual b then b will always choose a portfolio combination with more wealth invested in the risky asset but suppose that both assets are risky now there is no obvious sense in which the more risk averse individual can be said to hold a less risky portfolio but it seems strange that such a simple alteration should destroy the analytics which support the basic intuition similarly consider the basic insurance problem if one individual a is more risk averse than another b in the arrow pratt sense it follows that a will pay a larger premium to insure against a random loss than will b typically though an individual evaluates partial rather than total insurance that is only some gambles can be insured against and others must be retained in this case even when the gambles which are retained are independent from those which are insured it is no longer true that the individual whose arrow pratt measure of risk aversion is higher will pay a larger insurance premium the situation is no better when we consider comparative statics exercises for a single individual decreasing absolute risk aversion in the sense of arrow and

do women supply more public goods than men preliminary experimental evidence from matrilineal and patriarchal societies francine d blau cornell university janet m currie columbia university charles a holt university of virginia steffen andersen porcelaeenshaven 16 a 1 dk 2000 frederiksberg tel 45 3815 2591 fax 45 3815 2576 e mail sa eco cbs dk erwin bulte warandelaan 2 5037 ab tilburg the netherlands tel 31 13 466 2707 erwin bulte wur nl uri gneezy otterson hall room 4s136 9500 gilman dr 0553 la jolla ca 92093 0553 phone 858 534 4312 fax 858 534 0745 ugneezy ucsd edu john a list corresponding author 1126 east 59

revolt on the nile economic shocks religion and political power using centuries of nile flood data i document that during deviant nile floods egypt s highest ranking religious authority was less likely to be replaced and relative allocations to religious structures increased these findings are consistent with historical evidence that nile shocks increased this authority s political influence by raising the probability he could coordinate a revolt i find that the available data provide support for this interpretation and weigh against some of the most plausible alternatives for example i show that while nile shocks increased historical references to social unrest deviant floods did not increase a proxy for popular religiosity together the results suggest an increase in the political power of religious leaders during periods of economic downturn publication abstract

the mission human capital transmission economic persistence and culture in south america this article examines the long term consequences of a historical human capital intervention the jesuit order founded religious missions in 1609 among the guarani in modern day argentina brazil and paraguay before their expulsion in 1767 missionaries instructed indigenous inhabitants in reading writing and various crafts using archival records as well as data at the individual and municipal level i show that in areas of former jesuit presence within the guarani area educational attainment was higher and remains so by 10 15 250 years later these educational differences have also translated into incomes that are 10 higher today the identification of the positive effect of the guarani jesuit missions emerges after comparing them with abandoned jesuit missions and neighboring franciscan guarani missions the enduring effects observed are consistent with transmission mechanisms of structural transformation occupational specialization and technology adoption in agriculture

from farmers to merchants conversions and diaspora human capital and jewish history from the end of the second century ce judaism enforced a religious norm requiring fathers to educate their sons we present evidence supporting our thesis that this change had a major influence on jewish economic and demographic history first the high individual and community cost of educating children in subsistence farming economies 2nd to 7th centuries prompted voluntary conversions of jews that account for a share of the reduction from 4 5 to 1 2 million second the jewish farmers who invested in education gained the comparative advantage and incentive to enter skilled occupations during the urbanization in the abbasid empire in the near east 8th and 9th centuries and they did select themselves into these occupations third as merchants the jews invested even more in education a precondition for the mailing network and common court system that endowed them with trading skills demanded all over the world fourth the jews generated a voluntary diaspora within the muslim empire and later to western europe fifth the majority of world jewry lived in the near east when the mongol invasions in the 1250s brought this region back to a subsistence farming economy in which many jews found it difficult to enforce the religious norm and hence converted as it had happened centuries earlier jel j1 j2 n3 o1 z12 z13