trading patterns and prices in the interbank foreign exchange market the behavior of quote arrivals and bid ask spreads is examined for continuously recorded deutsche mark dollar exchange rate data over time across locations and by market participants a pattern in the intraday spread and intensity of market activity over time is uncovered and related to theories of trading patterns models for the conditional mean and variance of returns and bid ask spreads indicate volatility clustering at high frequencies the proposition that trading intensity has an independent effect on returns volatility is rejected but holds for spread volatility conditional returns volatility is increasing in the size of the spread there is a growing body of theoretical studies on the pattern of trading activity in financial markets with implications for the time series behavior of transactions prices and intensity of trading the empirical literature addressing similar concerns using intraday market data appropriate for such tasks is sparse particularly in the area of the trading of currencies the purpose of this paper is to examine both international patterns of intraday trading activity and the time series properties of returns and bid ask spreads for the deutsche mark dollar exchange rate in the interbank foreign exchange market the goal is to provide information useful in the further development of market microstructure models of trading and to compare empirical findings against theoretical results already in existence the foreign exchange market is in operation twenty four hours a day seven

the north south divide questions of existence and stability this paper investigates the relationship between regional earnings and unemployment by use of information primarily from the general household surveys of 1975 and 1982 conventional earnings functions are augmented to capture the effects of the level and duration of unemployment and of regional differences in living costs in common with previous studies the authors find personal characteristics and the occupation or industry of employment to be important in earnings determination in this paper however they generally find that although higher unemployment is associated with reduced regional earnings ceteris paribus long term unemployment has little influence in regional earnings determination copyright 1990 by royal economic society

every minute counts in financial markets abstract this paper represents an introductory study of ultra high frequency minuute by minute data for forex spot rates bid ask reuters quotes on three days autumn 1987 the frequency of price revision size of spread and statistical characteristics are measured the series exhibit time varying leptokurtosis unit roots and first order negative correlation the latter especially in disturbed jumpy markets the effect of time aggregation on these characteristics is examined and variance ratios are analyzed multivariate analysis revealed significant relationships between lagged exchange rates both the own rate and the key deutsche mark us dollar rate and the current spot rate

econometric evaluation of consumers expenditure equations large errors in forecasting consumption in the late 1980s and early 1990s were a major contribution to the poor performance in economic forecasting overall these errors have been attributed to the inability of existing models to capture important influences on consumer behavior such as the effects of financial deregulation and shifts in expectations revisions to models followed their failure to predict the late 1980s boom an important question is whether these developments help to explain the unanticipated downturn in consumers expenditure in the early 1990s this article presents an appraisal of eight recent u k consumption functions it is found that these models can explain much of the rise in consumption in the late 1980s however forecast errors for the early 1990s while within the historical range are predominantly negative the nature of this overprediction suggests that further research on household finances including the role of housing as collateral is required copyright 1994 by oxford university press

annual consumption functions a scottish uk comparison 1971 1985 holden d r and mcgregor p g 1990 annual consumption functions a scottish uk comparison 1971 1985 reg studies 24 247 259 this paper investigates the performance of a number of recently proposed consumption functions using annual scottish and uk data for the period 1971 to 1985 whilst the exercise is atheoretical in the sense that no attempt is made to tie estimated models to specific theories the influences considered do reflect an underlying conviction that a full understanding of consumption functions ultimately necessitates an integrated framework for modelling household behaviour in this context a number of recent models may be treated as non competing and separate investigation of non durable and durable expenditures may be helpful in evaluating competing explanations of recent consumption behaviour data coherent models of non durable expenditures are obtained although such specifications proved elusive for durables overall there was some supporting evidence for the intuitive sy

input output modelling of the urban and regional economy the importance of external trade harris r i d and liu a 1998 input output modelling of the urban and regional economy the importance of external trade reg studies 32 851 862 the modelling of regional and local economies especially through using the input output io approach is a standard practice for many economic consultants and yet quite often this is based on little if any primary data on interregional exports and imports this paper argues that the relative size of the trade sector in final demand and its importance in the literature on regional growth is such that current models are at best misspecified and are at worst likely to provide biased and possibly misleading results especially with regard to planning and policy at the local level on a more practical level this paper shows that with certain minimum information especially with regard to exports and imports a hybrid local io table can be constructed that provides reasonable accuracy in terms of estimates of io multipliers vis a vis a complete survey ta

comparative advantage learning and sectoral wage determination we develop a model in which a worker s skills determine the worker s current wage and sector the market and the worker are initially uncertain about some of the worker s skills endogenous wage changes and sector mobility occur as labor market participants learn about these unobserved skills we show how the model can be estimated using nonlinear instrumental variables techniques we apply our methodology to study wages and allocation of workers across occupations and industries using individual level panel data from the national longitudinal survey of youth we find that high wage sectors employ high skill workers and offer high returns to workers skills

trade and search generated unemployment we argue that trade economists should begin to seriously consider environments in which unemployment is carefully modeled we introduce such a model derive several results and compare them to results derived in full employment models we argue that some traditional results are probably too narrow the determinants of comparative advantage and that some results do not generalize to models with unemployment the link between trade and income distribution for employed factors we also show that in some important cases results do generalize there is an extended stolper samuelson theorem that links trade to the distribution of income for searching factors and that our model allows us to address issues that traditional models cannot handle the impact of trade on unemployment and the welfare of the unemployed 1999 elsevier science b v all rights reserved

news effects in a high frequency model of the sterling dollar exchange rate this paper uses an extremely high frequency data set on the dollar sterllng exchange rate to investigate the impact of news events on the very short term movements in exchange rates the data set is a continuous record of the quoted price for the exchange rate on the reuters screen as such it records some 130 000 observations over an 8 week period the paper investigates the time series properties of the data using orthodox regression models and then by making allowance for a time varying conditional variance the conclusions vary significantly in moving to this more sophisticated model the exercises are repeated now incorporating news announcement effects letting these affect the level of the exchange rate and then the conditional variance process again it is found that the conclusions are radically altered in moving to the increasingly sophisticated model

the distribution of talent and the pattern and consequences of international trade i study the interaction between imperfect labor contracts and international trade in a setting in which workers have private information about their own abilities when an individual s contribution to firm output can be measured accurately in some activities but not in others the most able workers select occupations in which their pay most closely reflects their own performance in a world economy with two otherwise similar countries that have different distributions of talent the country with the more heterogeneous labor force exports the good that is produced by the most talented individuals in this country trade exacerbates the polarization of the labor force and often worsens the distribution of income

the interaction between the frequency of market quotations spread and volatility in the foreign exchange market there is an empirical relationship between volatility average spread and number of quotations in the foreign exchange spot market the estimation procedure involves two steps in the first one the optimal functional form between these variables is determined through a maximization procedure of the unrestricted var involving the box cox transformation the second step uses the two stage least squares method to estimate the transformed variables in a simultaneous equation system framework the results indicate that the number of quotations successfully approximates activity in the spot market furthermore the number of quotations and temporal dummies reduce significantly the conditional heteroskedasticity e ect we also discuss information aspects of the model as well as its implications for financial informational theories inter and intra day patterns of the three variables are also revealed

sorting it out international trade with heterogeneous workers each worker brings a bundle of skills to the workplace for example quantitative and communication skills since employers must take this bundle as a package deal they choose workers with just the right mix of skills we show that international differences in the distribution of worker skill bundles for example japan s abundance of workers with a modest mix of both quantitative and teamwork skills have important implications for international trade industrial structure and domestic income distribution formally we model two dimensional worker heterogeneity and show that the second moments of the distribution of skills are critical as in the roy model

industry specific capital and the wage profile evidence from the national longitudinal survey of youth and the panel study of income dynamics using data from the national longitudinal survey of youth 1979 96 and the panel study of income dynamics 1981 91 i seek to determine whether there is any net positive return to tenure with the current employer once we control for industry specific capital including total experience in the industry as an additional explanatory variable i show that the return to seniority is markedly reduced using gls while it virtually disappears using iv gls at both the one digit and three digit levels therefore it seems that what matters most for the wage profile in terms of human capital is industry specificity not firm specificity

the regional transmission of uk monetary policy dow s c and montagnoli a 2007 the regional transmission of uk monetary policy regional studies 41 797 808 concerns have been raised in the media about a one size fits all monetary policy for the uk if there are diverse economic conditions in different regions then a unitary monetary policy cannot suit all the purpose of this paper is to explore this issue further by breaking it down into two separate issues first there is the more conventional way of considering the question in terms of the effect of a particular interest rate change on regions experiencing different economic conditions this requires a consideration of the nature and causes of regional economic disparities in the uk and how these might be affected by particular interest rate changes but there is further the question of how monetary policy is transmitted to the different regions the possibility is considered that there may be regional differences in how a particular monetary policy is translated into different financial

real time effects of central bank interventions in the euro market abstract this paper investigates the real time effects of sterilized foreign exchange intervention using official intraday intervention data provided by the danish central bank our analysis employs a two step weighted least squares estimation procedure we control for macro surprises address the issue of endogeneity and carry out an array of robustness tests only when the direction of intervention is consistent with the monetary policy stance do we find that intervention exerts a significant influence on exchange rate returns

occupational and job mobility in the us we propose a new methodology to measure worker mobility across occupations and jobs in the us building on the limited longitudinal dimension of monthly cps data for the period 1979 2006 we find that about 3 5 of male workers employed in two consecutive months report different three digit occupations this rate is procyclical mildly rising in the 1980s and falling after 1995 we also revise upward current estimates of aggregate job to job mobility since 1994 from 2 7 to 3 2 of employment per month despite extreme similarity of average levels and time series behavior occupational and job mobility are only weakly correlated

offshoring tasks and the skill wage pattern the paper investigates the relationship between offshoring wages and the occupational task profile using rich individual level panel data our main results suggest that when only considering within industry changes in offshoring we identify a moderate wage reduction due to offshoring for low skilled workers though wage effects in relation to the task profile of occupations are not estimated with sufficient precision however when allowing for cross industry effects of offshoring i e allowing for labor mobility across industries negative wage effects of offshoring are quite substantial and depend strongly on the task profile of workers occupations a higher degree of interactivity and in particular non routine content effectively shields workers against the negative wage impact of offshoring

segmentation and time of day patterns in foreign exchange markets abstract this paper sheds light on a puzzling pattern in spot foreign exchange markets domestic currencies appreciate depreciate systematically during foreign domestic working hours this phenomenon spans many years and several exchange rates and overrides calendar effects we argue that it is mainly due to liquidity and inventory patterns that emerge from the combination of two factors domestic agents tend to be net buyers of foreign currency and to trade mostly in their country s working hours the prevalence of domestic foreign traders demanding the counterpart currency during domestic foreign working hours implies sell price buy price pressure on the domestic currency during domestic foreign working hours

housing assets and consumer spending a regional analysis carruth a and henley a 1993 housing assets and consumer spending a regional analysis reg studies 27 611 621 this paper is concerned with the relationship between the housing market and consumer spending for the eleven standard regions of the uk pooled regional cross sectional and annual time series data are used to appraise the effect of housing assets on regional consumer spending in the 1980s a fixed effects estimator imposing common slope coefficients across the regions is employed and this assumption is tested using the sure estimator estimates of a dhsy specification of the consumption function and a model augmented with housing assets are compared the fixed effects models perform quite well indicating that the growth in regional housing equity has had a positive impact on regional consumer spending the sure results indicate that the assumption of common regional responses of consumer spending to the explanatory variables is not valid and that the housing wealth effect is strongest in

tobin tax and trading volume tightening a reassessment this article extends the previous literature on the tobin tax and financial transaction tax we investigate the linkages between trading volumes and transaction costs using both a linear and a nonlinear methodology in stark contrast with previous studies we consider the possibility that our model may exhibit threshold effects or regime dependency by estimating a markov switching ms model this paper is the first contribution to specify the trading volume of the forex through different low and high volatility regimes our empirical investigation looks at the eur usd currency market our results show evidence of nonlinear patterns for trading volumes and transaction costs on the forex the tobin tax would not have a monotonic impact on trading activity across market conditions however the change in elasticity between low and high volatility regimes is slight 0 17 versus 0 21 we may suggest that the low variance regime might be the fundamentalist regime and the high variance regime lower tobin tax elasticity might be the chartist regime this study is a first step towards understanding which categories of agents dominate the market under the various market regimes and how they would react to the introduction of a tax this means our results are consistent with tobin s underlying thinking 1974 1978 1996 since a tax would penalize chartists more than fundamentalists it could reduce exchange rate volatility

an investigation of transactions data for nyse stocks using transactions data the behavior of returns and characteristics of trades at the micro level is examined a minute by minute market return series is formed and tested for normality and autocorrelation evidence of differences in return distributions is found among overnight trades trades during the first 30 minutes following the market opening trades at the close and trades during the remainder of the day the latter distribution is found to be normal unusually high returns and standard deviations of returns are found at the beginning and the end of the trading day when the beginningand end of the day effects are omitted autocorrelation in the market return series is reduced substantially a number of patterns in trading are reported this paper empirically investigates the nature of the return generating process and the characteristics of trade size price changes trading frequency and trading interval at the level of individual trades for a large sample of nyse stocks previous studies of market indices have used daily weekly or monthly

the microeconomics of market making this paper examines the influence of risk aversion on the pricing policies of a market maker for securities it is shown that a market maker s bid ask spread can be decomposed into a portion for the known limit orders a risk neutral adjustment for expected market orders and a risk adjustment for market order and inventory value uncertainty it is dem onstrated that a risk averse market maker may set a smaller spread than a risk neutral specialist finally this paper demonstrates the pervasive role of inventory in affecting both the placement and size ofthe spread

heteroskedasticity in stock return data volume versus garch effects this paper provides empirical support for the notion that autoregressive conditional heterqskedasticity arch in daily stock return data reflects time dependence in the process generating information flow to the market daily trading volume used as a proxy for information arrival time is shown to have significant explanatory power regarding the variance of daily returns which is an implication of the assumption that daily returns are subordinated to intraday equilibrium returns furthermore arch effects tend to disappear when volume is included in the variance equation the autoregressive conditiqnal heteroskedasticity arch process of engle 1982 has been shown to provide a good fit for many financial return time series 1 arch imposes an autoregressive structure on conditional variance allqwing volatility shocks to persist over time this persistence captures the propensity of returns of like magnitude to clu ter in time and can explain the well documented nonnormality and nonstability of empirical asset return distributions see especially fama 1965 an appealing explanation for the presence of arch is based upon the hypothesis that daily returns are generated by a maiture of distributions in which the rate of daily information arrival is the stochastic mixing variable as suggested by diebold 1986 gallant hsieh and tauchen 1988 and stock 1987 1988 arch might capture the time series properties e g serial correlation of this mixing variable hqwever this linkage has not been broadly documented with the datia the objective of this study is to examine the validity of this explanation for daily stock returns the empirical strategy exploits the implication of the mixture model that the variance of daily price increments is heteroskedastic specifically positively related to the rate of daily information arrival using daily trading volume as a proxy for the mixing variable we show that for a sample of 20 common stocks arch effects vanish when volume is included as an explanatory variable in the conditional variance equation

negative autocorrelation around large jumps in intra day foreign exchange data abstract this paper addresses the issue of first order negative autocorrelation around large changes in high frequency foreign exchange rate data this phenomenon is found to exist at smaller time horizons and disappear at larger horizons

the use of technical analysis in the foreign exchange market abstract technica or chartist analysis of financial markets involves providing forecasts or trading advice on the basis of largely visual inspection of past prices without regard to any underlying economic or fundamental analysis this paper reports the results of a questionnaire survey conducted on behalf of the bank of england among chief foreign exchange dealers based in london in november 1988 amongst other findings it is revealed that at least 90 per cent of respondents place some weight on this form of non fundamental analysis when forming views at one or more time horizons there is also a skew towards reliance on technical as opposed to fundamentalist analysis at shorter horizons which becomes steadily reversed as the length of horizon considered is increased a very high proportion of chief dealers view technical and fundamental analysis as complementary forms of analysis and a substantial proportion suggest that technical advice may be self fulfilling jel f31

the regional implications of macroeconomic policy this article examines the relative impact of changes in uk fiscal and monetary policy on the economies of the uk regions this is done by first considering the relative importance of fiscal flows and balances to the uk regions and then assessing their sensitivity to fiscal policy changes second the impact of monetary policy on the regions is considered in four cases these are direct effects on spending exchange rate effects income effects and asset price effects the conclusions are that different policy levers have markedly different regional implications with southern regions being more sensitive to changes in income taxes and government consumption and investment while northern regions are more sensitive to changes in national insurance and transfer payments all regions have become more sensitive to interest rate changes over the past decade but regions in the south are considerably more vulnerable particularly to any knock on effect on house prices copyright 1995 by oxford university press

does unmeasured ability explain inter industry wage differentials this paper provides empirical assessments of the two leading explanations of measured inter industry wage differentials 1 true wage differentials exist across industries and 2 the measured differentials simply reflect unmeasured differences in workers productive abilities first we summarize the existing evidence on the unmeasured ability explanation second we construct a simple model which shows that if matching is important then endogenous job change decisions can create important self selection biases even in first differenced estimates of industry wage differentials third we analyze a sample that approximates the experiment of exogenous job loss we find that i the wage change experienced by a typical industry switcher closely resembles the difference in the relevant industry differentials estimated in a cross section and ii pre displacement industry affiliation plays an important role in post displacement wage determination

central bank forex internvention assessed in continous time abstract this paper looks at some of the principal characteristics of foreign exchange intervention by central banks the approach is novel in that virtually continous time data have been exploited using reuters screen information jel f31

a sorted tale of globalization white collar jobs and the rise of service offshoring abstract we study how the rise of unaffiliated trade in services with china and india has impacted u s labour markets the topic has two understudied aspects it deals with service trade most studies deal with manufacturing trade and it examines the historical first of u s workers competing with educated but low wage foreign workers our empirical agenda is made complicated by the endogeneity of service imports and the endogenous sorting of workers across occupations to develop an estimation framework that deals with these we imbed a partial equilibrium model of trade in tasks within a general equilibrium model of occupational choice the model highlights the need to estimate labour market outcomes using changes in the outcomes of individual workers and in particular to distinguish workers who switch up from those who switch down switching down means switching to an occupation that pays less on average than the current occupation we apply these insights to matched cps data for 1996 2007 the cumulative 10 year impact of rising service imports from china and india has been as follows 1 downward occupational switching increased by 7 percentage points from 21 to 28 and upward occupational switching increased by 6 percentage points from 17 to 23 2 transitions to unemployment were imprecisely measured to have increased by half a percentage point potentially raising the white collar unemployment rate from 3 0 to 3 5 3 the earnings average across all white collar workers fell by a small 1 however for the sub population of workers who switched down or became unemployed earnings fell by 15 and 47 respectively 4 service exports had partially offsetting effects on switching and unemployment

meteor showers or heat waves heteroskedastic intra daily volatility in the foreign exchange market this paper seeks to explain the causes of volatility clustering in exchange rates careful examination of intra daily exchange rates provides a test of two hypotheses heat waves and meteor showers the heat wave hypothesis is that the volatility has only country specific autocorrelation alternatively the meteor shower is a phenomenon of intra daily volatility spillovers from one market to the next using the garch model to specify the heteroskedasticity across intra daily market segments we find that the empirical evidence is generally against the null hypothesis of the heat wave using a volatility type of vector autoregression we examine the impact of news in one market on the time path of per hour volatility in other markets

an assessment of the regional impact of the introduction of a community charge or poll tax in england barnett r r levaggi r and smith p 1990 an assessment of the regional impact of the introduction of a community charge or poll tax in england reg studies 24 289 297 in 1990 the system of local government finance in england will be changed dramatically with the reforms including the introduction of a community charge or poll tax to replace the existing system of domestic property taxation the reforms will result in major changes to the financial incentives operating on local government this paper concentrates on the regional implications using models of local government behaviour under the existing system to predict the likely expenditure responses to the reforms of the major local authorities estimates of regional welfare gains and losses for the domestic sector are also computed the findings indicate large disparities between regions in the consequences of the reforms drawing particularly strong distinctions between northern regions and the rest of the country barnett r r levaggi

how many us jobs might be offshorable using detailed information on the nature of work done in over 800 us bureau of labor statistics occupational codes this paper ranks those occupations according to how easy hard it is to offshore the work either physically or electronically using this ranking it is estimated that somewhere between 22 and 29 of all us jobs are or will be potentially offshorable within a decade or two no estimate is made of how many jobs will actually be offshored since the rankings are subjective two alternatives are presented one is entirely objective the other is an independent subjective ranking in general they corroborate the rankings albeit not perfectly it is found that there is little or no correlation between an occupation s offshorability and the skill level of its workers as measured either by educational attainment or wages however it appears that controlling for education the most highly offshorable occupations were already paying significantly lower wages in 2004

occupational specificity of human capital we find that returns to occupational tenure are substantial everything else being constant 5 years of occupational tenure are associated with an increase in wages of 12 20 moreover when occupational experience is taken into account tenure with an industry or employer has relatively little importance in accounting for the wage one receives this finding is consistent with human capital being occupation specific

flexible exchange rates a closer look abstract the stochastic properties of flexible exchange rates are investigated by looking at a sample of intradaily sfr quotes for 231 trading days in 1983 estimated moments of the distribution of returns over five minute intervals often exhibit large changes which are mostly unpredictable even from one day to the next autocorrelation in returns is generally absent even inside a given day specific days of the week do not exhibit any special characteristics during a single day both relative changes in exchange rates as well as their volatility show some distinct patterns

heterogeneous trade costs and wage inequality a model of two globalizations abstract we develop a model for analyzing the distributional effects of two globalizations and their interdependence we distinguish between two trade cost reductions i trade liberalizations in the 1980s which increased trade in low skill intensive goods denoted l globalization and ii reductions in communication costs due to the it revolution which raised trade in middle skill intensive goods during the 1990s denoted c globalization we consider a north south trade economy in which the north is skill abundant a freely traded final good is produced using high skill services and a bundle of inputs inputs differ on the intensity of middle and low skill workers required to be produced and are subject to heterogeneous trade costs in the north we find that wage inequality increases in the l globalization during the c globalization wage polarization emerges the relative wage of high to middle skill workers increases while the relative wage of middle to low skill workers is hump shaped we find a complementarity between the two globalizations wage polarization is delayed by the extent of trade in the l globalization in the south we find that wage inequality increases in both globalizations finally we show how asymmetric participation in the c globalization of two southern countries generates a discontinuous pattern of specialization the southern country participating in the c globalization specializes in the least and most skill intensive traded inputs

volatility in the foreign currency futures market we examine the volatility implications of around the clock foreign exchange trading with transaction data on futures contracts from the chicago mercantile exchange and the london international financial futures exchange we find higher u s european and u s japanese exchange rate volatilities during u s trading hours and higher european cross rate volatilities during european trading hours while the diclosure of private information through trading may partly explain these volatility patterns we conclude that the increased volatility is more likely driven by macroeconomic news announcements an analysis of inter and intraday data also reveals that volatility increases at times that coincide with the release of u s macroeconomic news article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

offshoring and wage inequality using occupational licensing as a shifter of offshoring costs changes in information and communication technologies have increased the offshorability of tasks as routine tasks pol antras luis garicano and esteban rossi hansberg 2006 and lower offshoring cost tasks gene grossman and esteban rossi hansberg 2008 move abroad production processes become increasingly fragmented recent empirical papers e g mary amiti and shang jin wei 2005 runjuan liu and daniel trefler 2008 rosario crino forthcoming have aimed to illuminate the extent to which this is the case and the consequences of such changes a finding of this literature is that offshoring hurts disproportionately lower skill occupations and those occupations that are more tradable however this literature has been hampered by the difficulty of finding a good proxy for offshoring costs to measure the effect of offshoring on workers one would ideally want to increase offshorability of some tasks and not others and then compare the resulting changes in wages and employment in the occupations performing the tasks that are offshored with the ones that are not instead the literature has relied on proxies that are more or less directly linked to the skill content of the occupation and that as a result confound the effect of production technology and of offshoring cost there exist some partial exceptions such as j bradford jensen and lori g kletzer 2005 who argue that if a service is offshoring and wage inequality using occupational licensing as a shifter of offshoring costs

intra day and inter market volatility in foreign exchange rates four foreign exchange spot rate series recorded on an hourly basis for a six month period in 1986 are examined a seasonal garch model is developed to describe the time dependent volatility apparent in the percentage nominal return of each currency hourly patterns in volatility are found to be remarkably similar across currencies and appear to be related to the opening and closing of the worlds major markets robust lm tests designed to deal with the extreme leptokurtosis in the data fails to uncover any evidence of misspecification or the presence of volatility spillover effects between the currencies or across markets

the price variability volume relationship on speculative markets this paper concerns the relationship between the variability of the daily price change and the daily volume of trading on the speculative markets our work extends the theory of speculative markets in two ways first we derive from economic theory the joint probability distribution of the price change and the trading volume over any interval of time within the trading day and second we determine how this joint distribution changes as more traders enter or exit from the market the model s parameters are estimated by fiml using daily data from the 90 day t bills futures market the results of the estimation can reconcile a conflict between the price variability volume relationship for this market and the relationship obtained by previous investigators for other speculative markets this paper concerns the relationship between the variability of the daily price change and the volume of trading on speculative markets previous empirical studies 2 3 6 12 14 16 of both futures and equity markets always find a positive association between price variability as measured by the squared price change ap2 and the trading volume 2 there are two explanations for the relationship clark s 2 explanation which is secondary to his effort to explain why the probability distribution of the daily price change is leptokurtic emphasizes randomness in the number of within day transactions in clark s model the daily price change is the sum of a random number of within day price changes the variance of the daily price change is thus a random variable with a mean proportional to the mean number of daily transactions clark argues that the trading volume is related positively to the number of within day transactions and so the trading volume is related positively to the variability of the price change the second explanation is due to epps and epps 6 their model examines the mechanics of within day trading the change in the market price on each within day transaction or market clearing is the average of the changes in all of the traders reservation prices epps and epps assume there is a positive relationship between the extent to which traders disagree when they revise their reservation prices and the absolute value of the change in the market price that is an increase in the extent to which traders disagree is associated with a larger absolute price change the price variability volume relationship arises then because the volume of trading is positively related to the extent to which traders disagree when they revise their reservation prices

news from the u s and japan which moves the yen dollar exchange rate abstract intra daily movements in the yen dollar exchange rate are examined in four non overlapping segments within each business day from january 1980 to september 1985 the results indicate that the dollar tended to appreciate in the new york segment and depreciate in the european segment in three of the four subsamples considered the tokyo segment made virtually no contribution to annual yen dollar rate movements the volatility of the exchange rate also differed across markets finally in examining the relative effects of news from the u s and japan explicitly u s money announcement surprises had the most consistent effects

rising occupational and industry mobility in the united states 1968 97 we document and analyze the high level and the substantial increase in worker mobility in the united states over the 1968 97 period at various levels of occupational and industry aggregation this is important in light of the recent findings that human capital of workers is largely occupation or industry specific to control for measurement error in occupation and industry coding we develop a method that utilizes the psid retrospective occupation industry supplemental data files we emphasize the importance of our findings for understanding a number of issues such as the changes in wage inequality aggregate productivity job stability and life cycle earnings profiles

risk aversion market liquidity and price efficiency a model of a noncompetitive speculative market is analyzed in which privately informed traders and market makers are risk averse market liquidity is found to be nonmonotonic in the number of informed traders their degree of risk aversion and the precision of their information it is also shown that increased liquidity trading leads to reduced price efficiency and that under endogenous information acquisition market liquidity may also be nonmonotonic in the variance of liquidity trades article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies