relative wage positions and quit behavior evidence from linked employer employee data the authors analyze the importance of relative wage positions within firms in western germany in the context of individual quit decisions as an inverse measure of job satisfaction using a linked employer employee data set liab for the years 1996 2005 whose sample consists of full time male prime age workers in western germany without college degrees they ascertain whether workers find status or signal effects stronger motivators for quit decisions they find that workers with higher relative wage positions within their firms are on average more likely to quit their jobs than those with lower relative wage positions and that workers who experience a loss in their relative wage positions are also more likely to accept a wage cut associated with their job transition overall results suggest that a signal effect is on average stronger than a status effect

mobility and wage growth of male household heads 1989 mobility and wage growth of male household heads applied economics vol 21 no 4 pp 475 485

a reexamination of purchasing power parity a multicountry and multiperiod study abstract this paper re examines the purchasing power parity ppp theory in a multiple exchange rate world owing to a lack of precision in estimating the parameters many authors concluded that ppp did not hold very well in the 1970s using a time series cross sectional estimation procedure we are unable to reject the hypothesis that ppp holds in several currencies simultaneously in addition the parameters are precisely estimated this result follows from the estimation procedure which allows us to exploit the cross sectional variation in the data and the contemporaneous correlation in the deviations from ppp

does political reform increase wealth or why the difference between the chicago and virginia schools is really an elasticity question this paper shows that contrary to becker work there is no innate tendency for political competition to reduce the total cost of government wealth transfers simple examples demonstrate how the effects of government policies on total wealth boil down to the elasticities of the marginal support and opposition curves disagreements between the chicago and virginia schools of political economy can be understood as a disagreement about these elasticities the broader implications for this argument in terms of the efficiency of the common law are also discussed

sex and sector differences in the dynamics of wage growth in the federal republic of germany research on wage differentials for men and women and for labor market sectors has relied largely on cross sectional analysis using data on three cohorts of west german men and women we bring a dynamic perspective to these issues by analyzing wage changes for three aspects of work histories 1 wage rate at time offirst entry into the labor market 2 wage changes when workers change jobs and 3 wage growth within jobs education affects first wages for men and women but the effect weakens sharply over time education also has a significant positive impact on wage growth within jobs over the entire period for men and a positive but not significant effect for women highly educated women do less well than other women when changing jobs consistent with the view that advancement for such women is impeded by a glass ceiling labor market segment affects initial wages and wage gains due to a job change however movement into internal labor markets skilled jobs in large firms does not confer an initial payoff in wages workers in sectors characterized by internal labor markets do not experience higher than average wage growth within jobs a result that runs counter to theories of segmented labor markets finally wages grow at a decreasing rate with duration of job for both men and women however wage growth is initially more rapid for women but also declines more sharply over time

the collapse of purchasing power parities during the 1970 s one of the striking facts concerning the relationship beiveen prices and exchange rates during the 1970 s has been the dismal performance of the predictions of the simple versions of the purchasing power parity doctrine ppp that doctrine in its absolute version states that the equilibrium exchange rate between domestic and foreign currencies equals the ratio of domestic to foreign price levels the relative version of the doctrine relates equilibrium changes in exchange rates to changes in the ratio of domestic to foreign prices during the 1970 s short run changes in exchange rates bore little relationship to short run differentials in national inflation rates and frequently divergences from purchasing power parities have been cumulative this paper reviews and analyzes the empirical record of exchange rates and prices during the 1970 s and the analysis is based on the experience of the dollar pound the dollar frecch franc and the dollar dm exchange rates section 2 presents the evidence on ppp during the 1970 s and contrasts it with the evidence from the 1920 s a period during which the doctrine held up reasonably well this analysis is relevant for assessing whether the flexible exchange rate system was successful in providing national economies with an added degree of insulation from foreign shocks and whether it provided policymakers with an added instrument for the conduct of macroeconomic policy the evidence regarding devia tions from purchasing power parities is also relevant for determining whether there is a case for managed float section 3 attempts to explain what went wrong with

real exchange rates and divisia moments of world trade abstract this paper introduces new indexes of prices and quantities of world trade and demonstrates their link with real exchange rates these indexes are applied to data from the group of seven countries one of our results is that the elasticity of exports with respect to the real exchange rate is 0 4

the wage effects of voluntary labor mobility with and without intervening unemployment this study investigates how an unemployment spell between jobs affects a job changer s new wages one hypothesis holds that the search and mobility costs associated with unemployment between jobs are compensated for by increased wage gains resulting from more intensive job search opposing hypotheses are that unemployed job changers are at a disadvantage because they have fewer job contacts than job changers who move directly from one job to another or because they are unable to gain new skills or develop good work habits while unemployed the results of this analysis of 1979 81 data from the national longitudinal survey of young men support the first hypothesis an unemployment spell between jobs is associated with wage gains higher than those obtained when the job change was made with no intervening unemployment

purchasing power parity and relative price variability evidence from the 1970s abstract one curious fact to emerge from the return to flexible exchange rates in the 1970s was the failure of empirical tests of simple versions of the purchasing power parity ppp doctrine this paper seeks to establish whether that observed poor performance of ppp can be attributed to uncertainty regarding the rate of inflation due to the large variations in relative prices experienced during the 1970s the evidence is found to be unsupportive of the notion

the gender gap in early career wage growth in the uk the gender pay gap on entry to the labour market is approximately zero but ten years after labour market entry there is a gender wage gap of almost 25 log points this article explores the reason for this gender gap in early career wage growth considering three main hypotheses human capital job shopping and psychological theories human capital factors can explain about 11 log points job shopping about 1 5 log points and the psychological theories up to 4 5 log points depending on the specification but a substantial unexplained gap remains women who have continuous full time employment have had no children and express no desire to have them earn about 8 log points less than equivalent men after 10 years in the labour market

causes and consequences of layoffs using probit analysis this article finds that differential treatment accounts for a substantial portion of the higher layoff rates of blacks in comparison to whites however women are found to be considerably less prone to layoffs than men with similar characteristics among those who obtained subsequent employment taking into account the possible selectivity bias in such a subsample white males are hurt more by layoffs than black males in terms of both short term and long term earnings growth women s earnings are not necessarily affected by layoff at all however whites and males are found to be more likely to be reemployed than blacks and females respectively

job matching and women s wage tenure profile recently researchers have challenged the validity of the dominant theories of wage growth claiming that the observed positive relation between wages and tenture is an artefact of omitted job match quality in sharp contrast to the human capital theory job match theory implies that women s wages are not directly affected by their discontinuous labour force participation using samples of women workers from three data sets the authors estimate structural models of the wage tenure relation which control directly for job match quality and find evidence of a strong positive relation between wages and tenture

an international comparison of prices and exchange rates a new test of purchasing power parity abstract this paper introduces a new approach based on divisia index numbers to test ppp with both short run and long run data for all major currencies simultaneously the short run results indicate that the predictions of ppp do not hold up at all well on the other hand however the long run data are quite consistent with the ppp hypothesis the results also identify five years as a broad measure of the length of the long run insolar as ppp is concerned

the durability of human capital some new evidence this paper analyzes the effect of chronological aging experience job search change of job and or employer and formal training on the wage growth of a sample of young men following the human capital literature wage growth directly corresponds to human capital and the analysis allows for the assessment of the durability or rate of depreciation of human capital if further investments are not made the findings suggest that human capital is not very durable contrary to some previous estimates given in the literature

how puzzling is the ppp puzzle an alternative half life measure of convergence to ppp summary evidence of lengthy half lives for real exchange rates in the presence of a high degree of exchange rate volatility has been considered as one of the most puzzling empirical regularities in international macroeconomics this paper suggests that the measure of half life used in the literature might be problematic and proposes alternative measures with desirable properties their focus on the cumulative effects of the shocks distinguishes them from the measures used in the literature an empirical analysis of bilateral us dollar real exchange rates employing the alternative half life measure produces results consistent with theory and indicates that the ppp puzzle is less pronounced than initially thought copyright 2012 john wiley sons ltd

job match quality as an error component and the wage tenure profiler a comparison and test of alternative estimators the job matching hypothesis implies that the disturbance of the standard wage equation is correlated with one of the regressors tenure causing an overestimation of the effect of tenure on wages this hypothesis is tested and consistent estimates of wage equation parameters obtained using the methods of hausman 1978 the approach treats job match quality as a component of the disturbance term and an error components estimator is compared to a modified fixed effects estimator the results reject the hypothesis of no correlation between the disturbance term and tenure but the estimated value of the tenure effect is contrary to the matching model other models that may be consistent with these results are discussed

measuring international competitiveness experience from east asia this paper uses a new measure of real exchange rates as an indicator of international competitiveness this new measure involves defining all prices and exchange rates on an appropriately weighted basket of currencies rather than a single currency the measure is applied to the data for japan korea thailand malaysia and singapore for comparison purposes we calculate real exchange rates based on purchasing power parity ppp for these countries to check for the relative performance of the two measures cointegration tests are employed the results indicate that the new measure tends to be closely related with the export growth for the sample countries while the ppp based measure is not moreover the ppp based real exchange rates tend to understate the measures of competitiveness for these countries this result has important implications in terms of the levels of these countries exchange rates as well as the well known balassa hypothesis

why are services cheaper in the poor countries in their important work on international comparisons of national incomes and of comparative price structure kravis heston and summers i982 p 8 have noted that services are much cheaper in the relative price structure of a typical poor country than in that of a rich country this phenonomen has been documented now fairly systematically by the data gathered under their guiding hand of the united nations international comparison icp which covers 34 countries table i reproduced from their work i982 and fig i based on rows 3 and ii 13 indeed show this tendencyfor the relationship between relative service prices and real per capita gdp in this kravis heston summers 34 country 6 group sample the tendency is strongly evident except for the intermediate groups iii and iv

job match tenure and wages paid by firms using a new data set consisting of a matched sample of workers and firms and including explicit measures of match quality the authors estimate a structural model and find new evidence of a strong positive relation between wages and tenure inclusion of firm fixed effects does not significantly reduce the estimated returns to tenure the results also shed light on the relative importance of human capital and job matching theories

sticky prices and time to equilibrium evidence from asia pacific trade related economies the theoretical relation between exchange rate and prices has been a difficult proposition to find supporting evidence despite many studies of developed economies using standard research methods the exchange rate to price relation appears to hold in the long run only a result consistent with sticky price hypothesis there is a need to add to this sticky price literature by examining more yet studied economies to this area of research this article presents results to support long run equilibrium in the asia pacific economies as being 5 years the methodology is used to group countries with high trade intensity within a region and value weight the resulting variables to test the theory in a regional context our positive finding on the long run equilibrium we believe helps in some ways to enrich the literature on the exchange rate behaviour of an important region for world trade

equilibrium relationships between money and other economic variables central to the quantity theory of money are a number of important propositions about the long run equilibrium effects of changes in the nominal stock of money on other economic variables a standard way of testing these propositions is to use quarterly or annual data explicitly model the lag structure and then derive the long run solution of the model from the empirical estimates an alternative is to use some type of smoothing procedure to approximate positions of equilibrium and then to use these transformed data directly in testing hypotheses the national bureau technique of averaging data over reference cycle phases is one such method robert lucas s application of fourier transforms in two illustrations of the quantity theory of money 1980 is another and john geweke s method 1982 of frequency decomposition is a third an entirely different way of approaching the problem is to use cross country average rather than time series data as the basic units of observation the advantage according to lucas is that since the two quantity theoretic laws that he examines are obtained as characteristics of steady states or limiting distributions of theoretical models the ideal experiment for testing them would be a comparison of long term average behavior across economies with different monetary policies but similar in other respects p 1006 in this paper i conduct such an experiment the data that i use are for 20 oecd countries over the period 1956 80 the specific relationships that i examine are those between money and the price level money and real income money and interest rates and money and exchange rates in the main the data accord well with the quantity theoretic model classical neutrality holds there is evidence of a fisher effect albeit a less than complete effect on interest rates finally the data are consistent with long run purchasing power parity and hence correspondingly with a long run monetary approach to exchange rate determination

job mobility and earnings over the life cycle previous studies have shown that in the short run quits generally lead to wage increases on the next job and layoffs to no increase or to a wage cut the author of this study argues however that the prospect of a job change for any reason creates a disincentive for a worker to invest in training that is specific to the current job and therefore those who change jobs frequently may earn less over their life cycle than those who other things equal seldom change jobs an analysis of data from the national longitudinal survey of mature men supports that expectation showing that for white males job separations usually lead to wage gains in the short run but nonmobile workers tend to achieve significantly higher wages over the long run

job mobility wage determination and market segmentation in the presence of sample selection bias this paper tests the hypothesis that mobility between jobs is an important determinant of individual wages and that econometric estimates of wage determination should correct for sample selectivity bias in job mobility we also test the hypothesis that different patterns of job mobility produce different appropriate corrections for sample selectivity bias in different segments of the labour market we conclude that labour market segments do differ and in particular that one can identify a marginal or low wage sector with mobility patterns and pay packages which differ from the pattern one can discern in the labour market as a whole mobilite entre emplois determination des salaires et segmentation du marche quand il y a biais de selection dans l ehantillonnage ce memoire verifie l hypothese que la mobilite entre emplois est un element determinant des salaires des individus et la proposition que les calibrations econometriques du processus de determination des salaires doivent etre corrigees pour tenir compte d un biais de selection dans l echantillonnage de mouvements entre emplois les auteurs verifient aussi l hypothese que differents patterns de mobilite entre emplois commandent des corrections appropriees differentes dans differents segments du marche du travail les auteurs en arrivent a la conclusion que les divers segments du marche du travail sont differents et qu en particulier on peut reperer un secteur marginal ou de bas salaires ofu les patterns de mobilite entre emplois et les remunerations different remarquablement de ce qui se passe dans le marche du travail dans son ensemble

purchasing power parity in the 1920s and the 1970s a note abstract in a recent article of the european economic review frenkel 1981 claims that purchasing power parity ppp held farily well in the 1920s but collapsed in the 1970s frenkel s study does not include the swiss case the present paper aims to answer three questions 1 to what extend does the evidence of the 1920s and the 1970s support ppp for switzerland 2 is there a significant difference of price level and exchange rate behavior between the 1920s and the 1930s as claimed by frenkel and 3 is the swiss experience significantly different from that of the countries

burgernomics the economics of the big mac standard abstract in the course of ppp research much of the debate over the validity has been over the choice of an appropriate basket for making purchasing power comparisons the different compositions of goods and services in these baskets across countries have resulted in arguments against their usefulness for ppp purposes this problem is augmented by the existence of productivity differentials in traded and non traded goods across countries therefore we consider the use of the big mac as the international monetary standard as being a more palatable alternative it is produced locally in over 80 countries around the world with only minor changes in recipe and thus has the flavour of the perfect universal commodity our results indicate that the big mac index is surprisingly accurate in tracking exchange rates over the long term which is consistent with previous ppp research findings we subsequently enhance our ppp comparisons by taking into account the productivity differentials between countries and excluding non traded goods from the big mac index to derive the no frills index

seniority wages and productivity a turbulent decade why does a worker s wage tend to grow with seniority in the firm and what does this have to do with productivity two decades ago neoclassical labor economists thought that the theory of human capital provided a good answer to this question the last decade has however been one of puzzles and doubt at this point few would give an unambiguous answer and much hinges on the answer an attractive feature of human capital theory is that it yields a consistent and coherent explanation for several aspects of the employer employee relationship for example seniority systems layoff policies that vary with skill and the relationship between tenure and turnover can be explained in terms of human capital the fact that these explanations are connected leads however to something like a domino effect doubts about one cast doubt on the others if the human capital explanation for the wage seniority relationship is flawed then human capital explanations for other phenomena may require reevaluation in addition an important body of empirical research is built around the assumption that at any point in time a person s wage indicates the person s productivity included here is the extensive literature on the human capital earnings function as well as work on labor demand market discrimination and compensating differentials that assumption has become controversial in recent years in part because implicit contract theories predict that compensation will be redistributed over the period of the contract if a person s spot wage has little to do with spot productivity but rather is an instrument of a complex insurance or deferred compensation scheme then a reassessment of the empirical research may be necessary

do wages rise with job seniority many previous studies have found a strong positive effect of job seniority tenure on wages this paper re examines the evidence using a simple instrumental variables scheme to deal with the fact that tenure is likely to be related to unobserved individual and job characteristics that affect the wage we use the variation of tenure over a given job match as the principal instrumental variable for tenure the variation in tenure over the job is uncorrelated by construction with the fixed individual and job match specific components of the error term of the wage equation our main finding is that the partial effect of tenure on wages is small and that general labour market experience and job shopping account for most wage growth over a career the strong cross section relationship between tenure and wages is due primarily to heterogeneity bias prior researchers see mincer and jovanovic 1981 bartel and borjas 1981 borjas 1981 cline 1979 and mellow 1981 and many others have established that job seniority has a strong positive relationship with wage rates in a cross section or a cross section time series of individuals in this paper we re evaluate the evidence concerning the partial effects on wages of job seniority tenure and total labour market experience the extent to which wages rise with tenure is important for several reasons first and foremost the wage tenure profile is a fundamental question about the structure of earnings over careers second the wage tenure profile is a key determinant of the extent to which the earnings power of individuals is tied to specific jobs and it is important for assessment of the losses suffered by displaced workers hamermesh 1984 third evidence that wages rise with job tenure has been used to explain the decline in quits with tenure since the wage growth on the current job lowers the probability that the worker will locate a superior alternative a growing theoretical literature surveyed in parsons 1984 has taken the evidence of a strong wage tenure profile at face value and sought to provide an explanation for the relationship the most prominent explanation is the theory of specific human capital oi 1962 becker 1962 mincer 1974 parsons 1972 kuratani 1973 and hashimoto 1980 in which the growth of wages with tenure holding experience constant is attributed to the worker s share of investments in firm specific skills more recently lazear 1981 has presented a supervision model of wage growth in which firms defer compensation as a means of inducing workers not to shirk freeman 1977 and harris and holmstrom 1982 provide an explanation for wage growth based on an insurance motive salop and salop 1976 nickell 1976 and guasch and weiss 1982 present adverse selection models of wage growth in which firms use a wage tenure profile as a

long run purchasing power parity revisited a monte carlo simulation the existence of long run purchasing power parity ppp implies that a cointegration vector of nominal exchange rate domestic price and foreign price is expected regardless of using the engle granger two step method or johansen maximum likelihood approach however this paper has found conflicting results the engle granger technique tends to reject the long run ppp hypothesis whereas the johansen method is generally supportive of long run ppp via monte carlo simulations the present paper finds that the johansen approach has a bias toward supporting long run ppp especially under the circumstances in which the assumption of normally or and independently and identically distributed disturbance terms is violated

austrian economics neoclassicism and the market test professor sherwin rosen correctly suggests that the austrian and neoclassical schools can be complementary each accepting much from the other however his recognition of austrian strengths needs to be amplified and his criticisms need softening his appeal to the market test risks encouraging anti intellectual attitudes and practices

the evolution of purchasing power parity abstract a large body of literature in international finance has attempted to estimate the speed of convergence between countries aggregate price indices to those levels predicted by purchasing power parity ppp this paper takes a novel approach by considering how this speed of convergence itself has evolved over time using a dynamic common correlated effects dcce framework from chudik and pesaran 2015 applied to a panel of countries real exchange rates over the years 1960 2015 we find an average half life of around 3 years moreover we show that the estimated half life fell by about 2 years over the course of the past five decades suggesting that the so called ppp puzzle rogoff 1996 may abating over time our results also serve to contextualize past estimates by demonstrating a high degree of sample selection sensitivity in this literature furthermore we propose explanations for the observed increase in the speed of international price adjustments focusing primarily on the increasingly tradable nature of the composition of the u s consumer price index cpi we build a measure of tradability of the cpi and show that despite an increase in the proportion of services in the average consumer s basket the cpi has become more tradable over time thus offering a potential explanation for the observed increase in adjustment speed

tests of exchange market efficiency fragile evidence from cointegration tests abstract several recent papers have employed engle and granger 1987 cointegration tests to determine whether or not markets are efficient we use a new test for cointegration due to johansen 1988 to examine market efficiency with respect to the us dollar exchange rates for canadian japanese and west german currencies the fragile nature of the test indications suggests that cointegration methodologies cannot be relied upon to provide reliable evidence on market efficiency

exchange rate volatility before and after the float this paper provides a descriptive analysis of broad features of major exchange rates since the early 1970s and compares these features with those of the 1960s the analysis is then extended to investigate whether these features are manifested in interest rates and in commodity prices the results indicate that while the exchange rates have become more volatile during the current floating rate regime the moments are comparable with those for interest rates and commodity prices

econometric methods and purchasing power parity short and long run ppp this paper defines the different versions of the purchasing power parity and establishes the existing relationships between them in the light of econometric techniques monthly and annual data for real exchange rates are studied through a variance ratio test unlike other authors it is found that there is not explosive behaviour in the real exchange rate when monthly data are used besides stationarity is easily accepted using annual data these results allow to reconcile the two main versions of the purchasing power parity and also explain why trade imbalances are persistent but not permanent

professors and hamburgers an international comparison of real academic salaries in recent years academic staff unions and associations have argued for higher salaries for academics on the grounds that existing salaries have not kept pace with inflation are well below commercial salaries and most glaringly are much lower than the salaries of their overseas counterparts however most international comparisons are made based on exchange rate conversions which is inappropriate since purchasing power differentials are only reflected in exchange rates in the long term furthermore the volatility of exchange rates makes such conversions highly inaccurate in this chapter we provide a comparison of real academic salaries by converting the nominal salaries in each country to their purchasing power equivalents using the big mac index our results show that real academic salaries are highest in hong kong and singapore relative to the developed countries while hong kong tax and social security deductions are lowest furthermore real salary levels combined with intrinsic considerations such as the quality of life indicate that canada and new zealand are unattractive places for visiting migrating academics while australia and the us are relatively attractive we suggest that our findings could be of use to policy makers and academic unions in salary negotiations as well as academics making relocation decisions

real dollar exchange rate under the bretton woods and floating exchange rate regimes abstract the focus of the paper is on real exchange rates for the dollar over the period 1957 to 1985 most such exchange rates followed an almost steplike pattern showing relatively little movement in the late 1950s and 1960s falling abruptly and then remaining low in the 1970s and finally in the 1980s rising back to levels close to those that prevailed initially contrary to much recent commentary therefore the period that appears different is not the last five years but the decade that preceded them an important factor underlying this pattern of exchange rate movement according to results presented in the paper was the behavior of monetary policy and hence inflation in the united states what remains to be established is the precise mechanism linking money and real exchange rates and the relative strength of those links

a model of exchange rate dynamics this model treats the exchange rate as an asset price that depends on expectations concerning exogenous real and monetary factors that will affect relative prices and absolute price levels in future periods changes in exchange rates reflect both expected changes in these exogenous factors and changes in expectations occasioned by new information the model explains the random component in exchange rate behavior the source of divergences from purchasing power parity the anticipatory response of exchange rates to future expected disturbances and the causes of exchange rate overshooting

identification and estimation of money demand in most natural sciences physics chemistry biology theories are validated by controlled experiment however in other natural sciences astronomy meteorology and in most social sciences including economics the data are characteristically generated not by experiment but by measurement of uncontrolled systems in economics theories take the form of restrictions on the models assumed to generate the data and statistical methods replace experimental controls in testing these restrictions and here is the difficulty in economics particularly macroeconomics the theory used to derive tests ordinarily does not generate a complete specification of which variables are to be held constant when statistical tests are performed on the relation between the dependent variable and the independent variables of primary interest accordingly in such cases there will be a set of often very different candidate regression based tests each of which has equal status with the others since each is based on a different projection of the same underlying multivariate model except in the unlikely event that the explanatory variables are mutually orthogonal the conditional regression coefficients which generally form the basis for the test statistic will depend on the conditioning set we conclude from this that if a theory which does not generate a complete specification of the regression test is nonetheless to have testable implications these implications must be robust over the permissible alternative specifications if the restrictions indicated by the theory are satisfied in some projections but not in others that have an equal claim to represent implications of the theory one cannot conclude that the theory has been confirmed the fact that the observable implications of valid theories must obtain over a broad but usually incompletely specified set of regressions rather than for a single regression introduces a large and unavoidable element of imprecision into hypothesis testing in macroeconomics generally it appears to be appropriate to weaken the statistical criterion for rejecting theories consider for example the theory of money demand which will engage our attention in this paper the tobin baumol square root formula implies that the elasticity of money demand with respect to the interest rate is exactly one half but which interest rate should wealth be held constant inflation in view of such uncertainties it would be inappropriate to insist in a literal minded fashion on rejecting the tobin baumol model if in some regression the measured interest elasticity differed from one half by more than two standard deviations and only then obviously a more flexible approach is called for the practice has been to conclude that the statistical evidence is consistent with the tobin baumol model as long as the interest rate coefficient is negative if it is negative and significant or negative and insignificantly different from minus one half that would provide somewhat stronger confirmation but a positive coefficient particularly a significantly positive coefficient would be viewed as raising questions about the validity of the theory in macroeconomics generally as in the money demand application the typical response to specification uncertainty has been to regard a theory as supported if the signs of the estimated coefficients agree with those expected from theory and as disconfirmed otherwise there is no theoretical justification for this procedure but it seems to be a reasonable course to follow the point that economic theory ordinarily generates incompletely specified statistical university of california santa barbara we have received helpful comments from andrew abel robert clower michael darby robert engle stephen goldfeld david laidler edward leamer robert lucas frederic mishkin and edward prescott thomas hall provided able research assistance

cumulative gender disadvantage in contract employment women s wages do not grow with experience or tenure as much as men s do many accounts of this cumulative gender disadvantage attribute it to women s underinvestment in firm specific skills yet if that were true this disadvantage would not exist where firm specific skills are not rewarded by the labor market this article investigates this argument in the context of contract employment where demand for firm specificity is minimal contrary to expectations men still receive higher rewards than women over time drawing on quantitative evidence and qualitative fieldwork using job histories of high skill contractors affiliated with a staffing firm the author finds support for two sources of women s disadvantage lower rates of movement across clients on the supply side and unmeasured demand side factors by which similar levels of tenure and client transitions accrue lower rewards to women implications for research on gender stratification and career advancement in nonformalized labor markets are discussed

writing as a responsibility of science a reply to laband and taylor it must have been around 1968 in the coffee room of the social science building at chicago that milton friedman and the late george stigler had a jovial and public conversation about being economists that made a big impression on me milton was lamenting the stupidity of tariffs and george broke in from a foot above saying something as follows milton you re such a preacher if people want free trade they ll get it if they don t want it no amount of jawboning by economists will change their minds ah that s where we differ george we admire markets but you think they ve already worked and why not people are self interested and they vote their pocketbooks that s enough to make the market work they bought tariffs tariffs must be what they want no they pursue their interests but often do not know what their interests are people need education the average citizen has no idea that a tariff hurts him education try educating a lobbyist for the textile industry as i said that s where we differ i m a teacher and think that people do some things because they are ignorant and i m a scientist an economic scientist people do what they do because they are wise laband and taylor are stiglerites they believe with dr pangloss that we are in the best of all possible worlds the friedmanites which is my own tribe believe that we could be in it if we would only stop to think the stiglerites assume rationality the friedmanites teach it the stiglerites want to praise the world the friedmanites to change it the stiglerites detest policy what is is the friedmanites embrace it what might be can be the stiglerites are pessimistic in the manner of the master the friedmanites are optimistic laband and taylor the reader can see have a pessimistic and stiglerite explanation of why they have not learned to write competently they defend themselves against advice such as i give in the original paper by saying that it is presumptuous of anyone to claim unique knowledge of the marginal benefit to authors of investment in better presentation if the investment we were talking about was oil drilling i d agree with their economics i ve written a book called if you re so smart that makes a similar point about economic experts going around offering advice but the investment in question here is where laband and taylor go wrong is economic education laband taylor and i are economic educators in the educational industry we are the oil drillers the experts we educate our student roughnecks in the craft teaching them because we do know better or else we should not be standing up there tuth 10 50 12 10 part of the craft laband and taylor agree is attending to elements of presentation so the initial mistake in their paper is economic they think that because some advice is silly and misinformed all advice must be even advice from teachers to students stiglerites tend to drive themselves into such extreme skepticism but no one can actually live as an extreme skeptic i d like to see what laband and taylor say to a student who thinks that markets are bad for you do they agree mildly that it s just a matter of opinion another stigler story george opposed requirements in the graduate curriculum at chicago around 1970 he killed off the requirement in the history of thought which was his own field and tried repeatedly to kill off economic history he succeeded in 1980 when i left the faculty his argument which is heard in many other departments of economics was that the graduate students should be free to choose listen up milton after all they are just like consumers what george and laband and taylor never answered was the teacher s point which milton made in the discussions about the history of thought requirement we are teachers we do know better graduate students because they are not educated already that s why they are students often make bad decisions about their curricula

encouraging long term tenure wage tilt or pensions the author analyzes data on 6 416 persons in 109 firms to determine whether the length of these workers tenure was positively related either to wage tilt the payment of below market wages in the early years of the worker s employment with a firm and above market wages in the later years or to the presence of defined benefit pension plans contrary to the popular but little tested hypothesis that wage tilt is important in inducing workers to make long term commitments to the firm the results show that wage tilt had no significant effect on tenure except indirectly through its effect on pension quit costs in contrast pensions increased tenure in the firm on average by more than 20

understanding the gender pay gap what s competition got to do with it a number of researchers have argued that men and women have different attitudes toward and behavioral responses to competition that is women are more likely to opt out of jobs in which performance pay is the norm and to under perform in some competitive situations laboratory experiments suggest that these gender differences are rather large to check these hypotheses and findings against differences in the field the authors use performance pay as an indicator of competition in the workplace and compare the gender gap not only in incidence of performance pay but also in earnings and work effort under these contracts they find that although women are less likely than men to work under performance pay contracts the gender gap is small furthermore the effect of performance pay on earnings is modest and does not differ markedly by gender consequently the authors argue the ability of these competition hypotheses to explain the gender pay gap seems very limited