is approval voting an unmitigated evil a response to brams fishburn and merrill brams fishburn and merrill 1988 contend that the indeterminacy of approval voting av introduced in our paper 1988 is not a vice but a surpassing virtue of av they do not compare the negative versus the positive features of av so their assertion remains a conjecture our response emphasizes the need to determine the costs of av and to evaluate them against any merits moreover by correcting and answering bfm s comments the argument against av becomes much stronger this is because we show that av s region of indeterminacy is quite large it includes most profiles some of the consequences of this instability are that the av outcome can negate the voter s true wishes that the av outcome can be volatile even to minor fluctuations of voter s decisions and that av is one of the most susceptible systems to manipulation by small groups of voters for example small maverick groups could determine the av outcome under specific circumstances av may be appropriate to identify these situations we propose the more accurate name of the unsophisticated voter system

unit root tests and the statistical pitfalls of seasonal adjustment the case of u s postwar real gross national product unit root tests applied to the postwar seasonally adjusted quarterly gross national product series strongly support the null hypothesis of the presence of a unit root in the data generating process evidence reported here with seasonally unadjusted data is far less conclusive it is explained why seasonal adjustment procedures may alter the outcome of conventional tests

a multicountry characterization of the nonstationarity of aggregate output the authors compute the scaled varlogram the variances of kth differences scaled by the variance of first differences of the log of annual per capita real aggregate output gdp or gnp as measured by 1 the long series for the united states and united kingdom 2 angus maddison s 1982 long series for twelve countries and 3 the postwar ifs data for thirty two countries simulations show that the scaled varlogram of real output is nearly always more consistent with the data being generated by parsimonious difference stationary than trend stationary univariate processes in fact the data reveal some excess nonstationarity relative to parsimonious arima models the power of the scaled varlogram to discriminate between trend stationary and difference stationary processes is somewhat greater than that of a dickey fuller type f test copyright 1990 by ohio state university press

can tax loss selling explain the january seasonal in stock returns this paper analyzes the tax loss selling hypothesis as an explanation of the january seasonal in stock returns and argues that rational tax loss selling implies little relation between the january seasonal and the long term loss empirical results show that the january seasonal is as strongly related to the long term loss as it is to the short term loss the evidence is inconsistent with a model that explains the january seasonal by optimal tax trading

size seasonality and stock market overreaction recent research finds that the prior period s worst stock return performers losers outperform the prior period s best return performers winners in the subsequent period this potential violation of the efficient markets hypothesis is labeled the overreaction phenomenon this paper shows that the tendency for losers to outperform winners is not due to investor overreaction but to the tendency for losers to be smaller sized firms than winners when losers are compared to winners of equal size there is little evidence of any return discrepancy and in periods when winners are smaller than losers winners outperform losers

portfolio rebalancing and the turn of the year effect this paper finds that for the 1935 1986 period the market s risk return relation does not have a january seasonal the findings differ from those of other studies due to the use of value weighted rather than equally weighted portfolios inferences are sensitive to the weighting procedure because of the small firm return patterns in january in particular even in those januaries for which the market return is negative small firm returns are positive and they are more positive the higher is beta this is consistent with the portfolio rebalancing explanation of the turn of the year effect since at least 1926 the average return on small firms in january has been unusually high a phenomenon known as the turn of the year effect in this paper we present new evidence regarding the risk return characteristics of small firms in january we find that for small firms there is a positively sloped riskreturn relation in both up and down markets this pattern is difficult to reconcile with the belief that the high return on small firms in january is equilibrium compensation for risk bearing we show how these patterns in small firms returns have led others to conclude that the market s risk return relation has a january seasonal in particular rozeff and kinney 21 and tinic and west 22 23 among others using equally weighted portfolios formed on the basis of historical betas have found a steeper slope for the capm s risk return relation in january than in other months we demonstrate that this pattern exists only for small firms consequently statistical inferences about the risk return relation are heavily dependent upon whether equally weighted or value weighted portfolio returns are used in the estimation we show that for 1935 86 when monthly cross sectional regressions are estimated using value weighted portfolio returns there is no more of a statistically significant difference in the estimated return to risk bearing in january than in the other eleven months of the year the notion that there is a january seasonal in the capm s risk return relation for the us has rapidly become accepted knowledge for example corhay hawawini and michel 6 accept this conclusion and investigate whether other

the source of some paradoxes from social choice and probability abstract an elementary argument is developed to explain and unite several paradoxes coming from probability and from social choice this geometric approach is illustrated with new results about the intransitivities of election rankings over subsets of alternatives agenda manipulation conditional probability and waiting times

a comparison of autoregressive univariate forecasting procedures for macroeconomic time series the actual performance of several automated univariate autoregressive forecasting procedures applied to 150 macroeconomic time series are compared the procedures are the random walk model as a basis for comparison long autoregressions with three alternative rules for lag length selection and a long autoregression estimated by minimizing the sum of absolute deviations the sensitivity of each procedure to preliminary transformations data periodicity forecast horizon loss function employed in parameter estimation and seasonal adjustment procedures is examined the more important conclusions are that akaike s lag length selection criterion works well in a wide variety of situations the modeling of long memory components becomes important for forecast horizons of three or more periods and linear combinations of forecasts do not improve forecast quality appreciably

unit roots and infrequent large shocks new international evidence on output growth the authors examine output growth for the g 7 countries they use nathan s balke and thomas fomby s procedure to identify the date and type of trend breaks and note that these occur in clusters the authors estimate country specific intervention models and test the unit root hypothesis their critical values explicitly take account of the prior outliner search procedure for italy japan and the united kingdom the unit root null hypothesis can be rejected this suggests that the variance of output growth in these countries is generated by low frequency high magnitude shocks rather than high frequency low magnitude shocks copyright 1995 by ohio state university press

does real u k gdp have a unit root evidence from a multi century perspective we employ linear and nonlinear unit root tests to examine the stationarity of five multi century historical u k series of real output compiled by the bank of england three series span 1270 to 201

changes in the behavior of output in the united kingdom 1856 1990 abstract this paper reports evidence of major increases in the persistence of output as well as contributions of low frequency components to the variance of output growth for the united kingdom during 1856 1990 these results are contrary to those obtained by jaeger 1990

errors in recorded security prices and the turn of the year effect errors in recorded security prices are a source of misspecification in the market model if recorded price errors are sufficiently nonrandom they result in biased returns and in biased and inconsistent estimates of market model regression coefficients this paper argues that tax induced flow supply pressures cause end of the year recorded price errors to be nonrandom enough to create the appearance of anomalous turn of the year stock return behavior empirical tests of returns and market model regression coefficients during the turn of the year period cannot reject this errors in variables explanation of the turn ofthe year effect the turn of the year toy effect or january effect refers to the anomal ous behavior of stock returns during the last five trading days in december and the first five trading days in january this anomaly is of particular interest to financial researchers because it appears to be a small firm effect and the source of the majority of size related anomalies see keim 1985 reinganum 1981 and roll 1983a 1983b the interest in the toy effect is justified because of its implications concerning the validity of the capital asset pricing model capm and market efficiency in this paper we show that there is a price related effect operating during the toy period first we show that the magnitude of the toy return is inversely related to price when we control for price most of the size related toy effect found by reinganum 1983 and roll 1983a disappears second the data indicate that all firms have unusually high returns during the toy period compared with their returns during the rest of the year third we find seasonal shifts in the market model betas associated with the toy period furthermore we test the hypothesis that the toy effect is an errors in variables problem due to the use of the one eighth pricing convention in recording security prices and the accommodation of tax induced flow pressures by liquidity traders such as market

a dictionary for voting paradoxes abstract a sonnenschein mantel debreu kind of characterization is found for positional voting procedures namely for n 2 candidates once the voting procedures and a profile are specified the rankings of all possible subsets of candidates are uniquely determined by varying over all profiles one obtains a dictionary of all possible coordinated election outcomes this is done for all positional voting procedures as with excess demand functions anything can happen voting paradoxes can be very complicated only borda s method avoids many paradoxes use of this dictionary is illustrated by significantly extending several well known paradoxes and by obtaining new results about runoff and agenda elections strategic behavior etc

the capm and equity return regularities differential returns on dividend and capital gains income systematic abnormal returns surrounding ex dividend dates excess returns on small versus large capitalization stocks excess returns on low versus high price earnings ratio stocks these are among the recent findings that cast doubt on the traditional capital asset pricing model and tease investors with the promise of systematic excess returns some of these effects are undoubtedly related tests indicate for example that the higher a portfolio s price to book ratio the higher the corresponding values of market capitalization pie and stock price furthermore p e dividend yield price and pie effects all experience significant january seasonals what has not been conclusively determined is whether the effects are additive so far it appears that the dividend yield and size effects are not mnutually exclusive investors may want to use a strategy employing several of these characteristics rather than one efforts to explain the size effect have focused on january because the effect is concentrated in that month the most common hypothesis attributes this to year end tax loss selling but the evidence is less than conclusive evidence strongly suggests however that among small firms those with the largest abnormal returns tend to be the firms that have recently become small that either don t pay dividends or have higher dividend yields and that have lower prices and low pie ratios

non stationarities in macro economic time series further evidence and implications two sources of non stationarities in the mean of macro economic time series are investigated the empirical evidence for several countries clearly implies that differencing is to be preferred to the assumption of a deterministic linear time trend this result is somewhat weaker with respect to the analogous choice between seasonal differencing and seasonal dummy variables it is recommended that the time series properties of the variables considered in empirical work be carefully checked because the estimated relationships may heavily depend on the chosen detrending procedure les non stationarites dans ies chroniques macro economiques resultats supplmentaires et implications l auteur examine deux sources de non stationarite dans la mnoyenne des chroniques macroeconomiques les resultats d analyses de donnees pour plusieurs pays montrent clairement qu on doit preferer l usage d un processus de differences finies a l emploi d une tendance lineaire deterministe ce resultat est un peu moins robuste pour ce qui est du choix analogue entre l utilisation de differences saisonnieres par rapport a

unit root and trend breaks in per capita output evidence from sub saharan african countries abstractthis article examines the nonstationary properties of per capita real output in 28 sub saharan african ssa countries covering the period 1960 2014 the sequential testing approach proposed by kejriwal and lopez 2013 econometric reviews 32 8 892 927 is used to categorize ssa countries into growth shift level shift and linear trend hypotheses based on the presence or not of breaks in slope and or level of the trend function the break dates are associated to major historical or economic events such as sociopolitical crisis commodity price fluctuations on international market the discovery and the exploitation of mineral deposits or unfavourable environmental and climatic conditions the empirical evidences of appropriate unit root tests fail to reject the unit root hypothesis in all the countries suggesting that a shock would have a permanent effect on growth process and stabilization policies may be implemented in dealing with income fluctuations

the problem of indeterminacy in approval multiple and truncated voting systems it is well known that a plurality election need not reflect the true sentiments of the electorate some of the proposed reform procedures such as approval and cumulative voting share the characteristics that there are several ways to tally each voter s preferences voting systems that permit truncated ballots share this feature it is shown that the election results for any such procedure can be highly indeterminate all possible election results can occur with the same choice of sincere voters this conclusion of indeterminacy holds even when measures of voters sentiments such as the existence of a condorcet winner or even much stronger measures indicate there is considerable agreement among the voters then multiple systems are compared with all standard tallying procedures for instance a corollary asserts it is probable for the plurality voting method to elect the condorcet winner while approval voting has an indeterminate outcome

stock return seasonalities and earnings information previous literature documents significant seasonalities in stock market returns one explanation is seasonality in earnings information if true a return index comprised solely of firms reporting earnings should exhibit stronger intertemporal seasonalities than a return index comprised of firms not reporting earnings employing all new york and american stock exchange firms over six years this study examines the seasonality of stock returns generally seasonal patterns for reporting returns are found to be similar to or slightly weaker than for nonreporting returns thus it is doubtful that earnings news seasonality induces stock return seasonality

the nonstationarity of aggregate output some additional international evidence in this paper the stationarity of aggregate output is examined using the scaled variogram for a sample of twelve countries it is argued that if the true data generating process of output is stationary around a deterministic trend with a change in mean and or growth rate the results of previous studies are biased once the authors allow for a one time exogenous shock the conclusions are indeed less clear cut and for some countries even reversed copyright 1994 by ohio state university press

long memory and persistence in aggregate output abstract we examine persistence in u s aggregate output by estimating fractionally integrated arima models these models provide better low frequency approximations to the wold representation than previous stochastic specifications and earlier results on the importance of a permanent component emerge as special cases we find evidence of long memory which induces persistence though this long memory need not be associated with a unit root our point estimates indicate that macroeconomic shocks while persistent are distinctly less persistent than many earlier studies suggest however confidence intervals associated with the long run response are quite wide

debt deficits and inflation an application to the public finances of india abstract the paper studies the solvency of the indian public sector and the eventual monetization and inflation that would be implied by stabilization of the debt gnp ratio in the absence of changes in the primary deficit the nonstationarity of the discounted public debt suggests that indefinite continuation of the pattern of behavior reflected in the historical time series process is inconsistent with the maintenance of solvency this message is reinforced by the recent behavior of the debt gnp ratio and of the ratio to gnp of the sum of the primary budget surplus and seigniorage our estimates of the base money demand function suggests that even maximal use of the inflation tax would not be sufficient to restore solvency measures to reduce the primary deficit are therefore unavoidable

misspecification of capital asset pricing this study documents empirical anomalies which suggest that either the simple one period capital asset pricing model capm is misspecified or that capital markets are inefficient in particular portfolios based on firm size or earnings price e p ratios experience average returns systematically different from those predicted by the capm furthermore the abnormal returns persist for at least two years this persistence reduces the likelihood that these results are being generated by a market inefficiency rather the evidence seems to indicate that the equilibrium pricing model is misspecified however the data also reveals that an e p effect does not emerge after returns are controlled for the firm size effect the firm size effect largely subsumes the e p effect thus while the e p anomaly and value anomaly exist when each variable is considered separately the two anomalies seem to be related to the same set of missing factors and these factors appear to be more closely associated with firm size than e p ratios

analysis of renewable energies in european union abstract the paper s main research objective is to analyse the renewable energy sector in the european union member states the first step of the research was to generate clusters of countries based on the share of renewables in total energy produced and the countries energy dependence in order to generate the clusters we applied the k means clustering method based on the data obtained from eurostat by using the statistical package for the social sciences three clusters of countries have been generated in the next step the eu states were ranked based on the following criteria share of renewable energy sources share of renewable electricity share of renewable heating and cooling and share of renewable energy in transport then the main characteristics of the renewable energy policy in each member state have been highlighted

short run models and long run forecasts a note on the permanence of output fluctuations suppose that real gnp falls 1 percent lower than one would have expected from its past history how much should one change one s forecast of gnp for ten or twenty quarters ahead that is the question which has recently been addressed by campbell and mankiw 1987 and clark 1987 both of these papers estimate a parsimonious representation of the time series and then compute the implied long run response of gnp to an innovation while clark estimates that the long run impact of an innovation is less than two thirds of the initial impact campbell and mankiw present evidence that shocks persist and even grow over time the goal of this paper is to develop tests of the goodness of fit of specific time series models which are powerful against alternatives that imply different long run impulse responses with postwar quarterly data these tests favor models in which innovations are largely temporary over models in which innovations persist

nonlinearities in real exchange rate determination do african exchange rates follow a random walk in this article we aim at modelling the long run behaviour of the real effective exchange rates reer for a pool of african countries not much attention has been paid to this group of countries in particular to the existence of nonlinearities in the long run path of such a variable controlling for two sources of nonlinearities i e asymmetric adjustment to equilibrium and nonlinear deterministic trends allows us to gain some insight about the behaviour of the african reer we find that these sources of nonlinearities help us to explain the apparent unit root behaviour found applying linear unit root tests for most of the countries

output and unemployment dynamics in the united states 1950 1985 for us data over 1950 1985 the stochastic components of gnp growth and the unemployment rate appear to be stationary and there is substantial feedback between these variables the unconditional mean rate of unemployment in a joint model thus provides a natural benchmark in discussions of the business cycle a bivariate var model is used to describe output unemployment dynamics to estimate the degree of persistence of output innovations and to decompose output into trend and cycle the bivariate results are interpreted using a restricted var and it is shown that a closely related cyclical measure can be obtained directly from the okun s law equation

a measure of the u s output gap abstract an autoregressive distributed lag regression of the unemployment rate on output growth is structurally stable over the 1890 1986 period inverting this equation yields a measure of the output gap which is not subject to the spurious detrending problem

implementing the borda outcome via truncated scoring rules a computational study this study is an attempt to empirically understand the likelihood of choosing the borda outcome through a truncated scoring rule when n voters are asked to report only part of their linear preferences over m alternatives we run monte carlo simulations through a grid search algorithm as we employ an impartial culture model to sample voters preferences given the range of parameter values we consider we report the truncated scoring rules that maximize the likelihood of implementing the borda outcome and how the maximum likelihood changes with m and n we also present our results on the relative performances of some popular truncated voting rules such as plurality and approval voting in implementing the borda outcome and demonstrate that two level approval voting performs significantly better than the plurality rule moreover we propose the expected borda rule as a good proxy for the best implementor of the borda rule among all truncated rules

measuring abnormal performance do stocks overreact abstract a highly controversial issue in financial economies is whether stocks overreact in this paper we find an economically important overreaction effect even after adjusting for size and beta in portfolios formed on the basis of prior five year returns extreme prior losers outperform extreme prior winners by 5 10 per year during the subsequent five years although we find a pronounced january seasonal our evidence suggests that the overreaction effect is distinct from tax loss selling effects interestingly the overreaction effect is substantially stronger for smaller firms than for larger firms returns consistent with the overeaction hypothesis are also observed for short windows around quarterly earnings announcements

measuring persistence in the presence of trend breaks the case of us gnp abstract measures of output persistence vary between the studies of campbell and mankiw 1987 and cochrane 1988 mainly because of the use of per capita versus real gnp data and annual versus quarterly observations i show that the existence of trend breaks in both the gnp and the population series can explain the different findings for per capital and real gnp data

decision theory the next 100 years advances in decision theory have often been driven by paradoxes early in the eighteenth century daniel bernoulli and others wrestled with why prudent individuals often violate the principle of maximising expected return they were fascinated by the paradox of people paying at most a few pounds to engage in an infinite expectation game that returns 2 shillings if the first heads in a succession of coin tosses occurs at toss n later in the same century the marquis de condorcet was intrigued by the paradox of cyclical majorities for multicandidate elections in which there is no majority candidate who could defeat or tie every other candidate under simple majority comparisons based on voter preference rankings bernoulli s i 738 resolution of the prudent people paradox was an early version of expected utility theory in which one s utility for money increases at a decreasing rate his legacy is evident in later expected utility theories as well as the principle of diminishing marginal utility of wealth that was so popular

the unit root hypothesis for aggregate output may not hold after all new evidence from a panel stationarity test with multiple breaks author affiliation diego romero avila pablo de olavide university department of economics carretera de utrera km 1 41013 seville spain dromtor upo es acknowledgment the author would like to thank seminar participants at pablo de olavide university and dg economics of the european central bank and two anonymous referees for useful comments and suggestions 1 introductionsince the seminal work by nelson and plosser 1982 researchers have paid considerable attention to the presence of stochastic trends in macroeconomic variables that work also changed the way macroeconomists think about secular trends and short run fluctuations in business cycles since the existence of a unit root in output purports that shocks are permanent short run fluctuations cannot be explained by the traditional view as deviations around a deterministic trend that represents the secular component of the series instead the trend function itself can fluctuate as a result of permanent shocks king et al 1991 found that supply factors are important in explaining economic fluctuations but may not be the lone source of short run fluctuations campbell and mankiw 1987 stressed that demand shocks may also be the source of permanent shocks to output the existence of a high degree of persistence in output has important implications in macroeconomics for example the keynesian view that most shocks to output are transitory and output fluctuations are temporary deviations from the secular trend is inconsistent with a unit root in output on the contrary the real business cycle view conceives fluctuations as largely the result of real permanent shocks essentially of a technological nature this has important implications for economic policy since stabilization policies lose their effectiveness when variations of output are mainly permanent thus running counter to the keynesian view much of the empirical literature has focused on the nonstationarity properties of real u s gross national product gnp to cite a few studies perron and phillips 1987 schwert 1987 campbell and mankiw 1987 and perron 1988 fail to reject the null hypothesis of a unit root in real u s gnp these results have not gone unchallenged christiano and eichenbaum 1990 and rudebusch 1993 highlighted the low power of standard unit root tests of the augmented dickey and fuller 1979 type to distinguish between the trend stationary and unit root behavior in aggregate output the development of cross country data sets such as the long gross domestic product gdp series provided by maddison 1989 and the penn world table pwt constructed by summers and heston 1990 has allowed researchers to provide international evidence on the unit root behavior in aggregate output for instance wasserfallen 1986 found a unit root in gnp series for some organization for economic co operation and development oecd countries over the postwar era kormendi and meguire 1990 confirmed the existence of a unit root in output for twelve oecd countries over the period 1870 1985 1 however the seminal work of perron 1989 uncovered the fact that nonstationarity may conceal the existence of stationarity with structural change showing that standard unit root tests tend to misinterpret trend stationarity with a structural break as a unit root by exogenously imposing a structural break in real u s gnp perron 1989 was able to strongly reject the unit root hypothesis however zivot and andrews 1992 provided slightly less evidence of a unit root in real u s gnp using a test that allowed for a structural break that was endogenously determined from the data in an international context zelhorst and de haan 1994 1995 found evidence for oecd countries that over long time periods where the presence of structural change becomes more likely the null of a unit root in output tends to be rejected in favor of regime wise stationarity

trends and cycles in macroeconomic time series two structural time series models for annual observations are constructed in terms of trend cycle and irregular components the models are then estimated via the kalman filter using data on five u s macroeconomic time series the results provide some interesting insights into the dynamic structure of the series particularly with respect to cyclical behavior at the same time they illustrate the development of a model selection strategy for structural time series models

are output fluctuations transitory according to the conventional view of the business cycle fluctuations in output represent temporary deviations from trend the purpose of this paper is to question this conventional view if fluctuations in output are dominated by temporary deviations from the natural rate of output then an unexpected change in output today should not substantially change one s forecast of output in say five or ten years our examination of quarterly postwar united states data leads us to be skeptical about this implication the data suggest that an unexpected change in real gnp of 1 percent should change one s forecast by over 1 percent over a long horizon

searching for a break in gnp it has been suggested that existing estimates of the long run impact of a surprise move in income may have a substantial upward bias due to the presence of a trend break in postwar u s gross national product data this article shows that the statistical evidence does not warrant abandoning the no trend break null hypothesis a key part of the argument is that conventionally computed p values overstate the likelihood of the trend break alternative hypothesis this is because they do not take into account that in practice the date is chosen based on pretest examination of the data

optimal stock trading with personal taxes implications for prices and the abnormal january returns abstract the tax law confers upon the investor a timing option to realize capital losses and defer capital gains with the tax rate on long term gains and losses being about half the short term rate the law provides a second timing option to realize losses short term and gains long term if at all our theory and simulation over the 1962 1977 period establish that taxable investors should realize long term gains in high variance stocks and repurchase stock in order to realize potential future losses short term tax trading does not explain the small firm anomaly but predicts a seasonal pattern in trading volume which maps into a seasonal pattern in stock prices the january anomaly only if investors are irrational or ignorant of the price seasonality

mergers stock prices and industrial production further evidence abstract economic theory has been developed to correlate mergers and stock prices and mergers and industrial production this study tests for significant relations among annual mergers stock prices and industrial production and examines whether multiple time series models can forecast annual mergers more accurately than a univariate merger model we do not find that the mean square forecasting error of the multivariate time series model is significantly less than the mean square forecasting error of the univariate merger model the stock price series does not aid in forecasting mergers

model evaluation based on residual analysis of two similar models models that may appear to have different properties may in fact produce residuals that differ only in subtle ways by analysing the relationships between model residuals the problems in distinguishing between models can perhaps be discovered as illustrated by the econometric examples considered regressing residuals gives the long memory residual which is the difference between two models but this difference is very subtle and deeply hidden which explains why the traditional standard technique does not find this difference

inflation real returns and capital investment we find evidence for the hypothesis of mundell 1963 and tobin 1965 that the expected real return component of interest rates is negatively related to the expected inflation component in the mundell tobin model the variation in expected real returns is caused by the variation in expected inflation our evidence suggests however that the variation in expected real returns is more fundamentally an outcome of the capital expenditures process equilibrium expected real returns vary directly with capital expenditures in order to induce equilibrium allocations of resources between consumption and investment this positive relation between expected real returns and real activity which comes out of the real sector combines with a negative relation between expected inflation and real activity which is traced to the monetary sector thus inducing the negative relation between expected inflation and expected real returns predicted by mundell and tobin but explained in terms of a model much different from theirs

an investigation into adequate data for estimating annual earnings time series models abstract the purpose of this study is to examine the stability of corporate earnings per share eps time series models as the length of the time series are altered evidence is found to support the stationarity of corporate eps data furthermore outlier analysis is employed and supports the long run stability of corporate earnings series

evidence on tax motivated securities trading behavior tax loss selling by investors in common stocks near the end of calendar years has been proposed as an explanation for the turn of the year effect in stock returns past analyses of this hypothesis have relied on inferential data we provide here some direct data from a compilation of over 80 000 actual common stock investment round trips by a sample of 3000 individual investors we find strong evidence of a concentration of loss taking trades late in the year and milder evidence of a concentration just prior to the dates when investments become eligible for long term tax treatment the question as to whether and in what manner the impostion of a tax on realized capital gains affects the securities trading behavior of investors who are subject to the tax has been a longstanding topic of research in the financial ecomonics literature the original attention devoted to the matter was motivated primarily by a concern about resource allocation and federal tax revenue consequences and was directed toward the phenomenon of what has been termed the lock in effect of a gains tax that issue has remained an important public policy one and continues today as part of the ongoing debate about appropriate strategies for reducing the federal budget deficit particular additional interest in the topic has emerged in recent years however because securities transactions undertaken systematically for tax reasons have also been proposed as part of the explanation for certain observed anomalies in historical common stock returns most prominently the well documented turn of the year effect our purpose here is to provide some new evidence that decisions by investors as to the timing of the realization of capital gains and losses from their common stock investments are significantly affected by tax considerations this evidence indicates that a difference in the tax rates applicable to realizations classified as short and long term influences the timing of individual investors trades and further that there is a clear tendency for trades by individuals which give rise to losses to be concentrated near the end of calendar which for them are also tax years while we cannot conclude that

seasonality stock returns and the macroeconomy this paper examines the relationship between seasonality stock returns and the macroeconomy using a multifactor model of stocks returns observed seasonal patterns in excess returns are found to be a result of seasonality in excess expected returns by utilising a multifactor model of stock returns these higher returns are found to be a compensation for risk associated with a number of macroeconomic factors at certain times of the year

permanent and transitory components in macroeconomic fluctuations fluctuations in real gnp have traditionally been viewed as transitory deviations from a deterministic time trend the purpose of this paper is to review some of the recent developments that have led to a new view of output fluctuations and then to provide some additional evidence using post war quarterly data it is hard to reject the view that real gnp is as persistent as a random walk with drift we also consider the hypothesis that the recent finding of persistence are due to the failure to distinguish the business cycle from other fluctuations in real gnp we use the measured unemployment rate to decompose output fluctuations we find no evidence for the view that business cycle fluctuations are more quickly trend reverting this abstract was borrowed from another version of this item

shifting trends segmented trends and infrequent permanent shocks abstract a stochastic trend model is considered in which permanent shocks occur infrequently and randomly we show that this model is observationally equivalent to shifting segmented deterministic trend models moreover we show that standard full sample time series methods are incapable of distinguishing between small frequent permanent shocks and large infrequent permanent shocks an outlier search however reveals substantial evidence of large infrequent shocks to the gnp deflator and that these shocks account for most of the persistence in the gnp deflator for real gnp evidence of infrequent permanent shocks is weaker

turn of month evaluations of liquid profits and stock returns a common explanation for the monthly and january effects this paper presents and tests a hypothesis that the standardization of payments in the united states at the turn of each calendar month generally induces a surge in stock returns at the turn of each calendar month the hypothesis also asserts that returns generally will be greater following the month of december and will vary inversely with the stringency of monetary policy empirical results using stock index returns for 19691986 support the hypothesis this analysis provides an explanation for the previously documented monthly effect in stock returns and a partial explanation for the january effect in a recent paper ariel 1987 documents an important empirical regularity in stock returns and terms it the monthly effect using value weighted and equally weighted daily stock index returns for the period 1963 1981 ariel shows that virtually all of the cumulative return on these indexes is realized on ten consecutive trading days of the calendar month beginning with the last trading day of the month and extending through the first nine trading days of the following month ariel considers various explanations for this phenomenon but none sufficed to explain the observed empirical regularity p 174 more recently lakonishok and smidt 1988 examine returns on the dow jones industrial average index for the period 1897 1986 and find that significant mean daily returns are realized consistently on only four consecutive trading days of the calendar month beginning with the last trading day of the month these trading days will henceforth be referred to as the turn of month trading days ariel s and lakonishok and smidt s tests indicate that the monthly effect is not merely another manifestation of the previously documented january effect rozeff and kinney 1976 first documented that average stock index returns in january are higher than in any other month keim 1983 and others find that the surge in january returns is largely confined to stocks of small firms and to the first few trading days in january branch 1977 and others have suggested that the surge in january returns is due to year end tax loss selling and subsequent repurchases in january studies by roll 1983 reinganum 1983 ritter 1988 and others provide evidence consistent with the tax loss selling

exchangeability and its economic applications abstract the symmetry possessed by exchangeability is the key to its usefulness the methods that are used to comprehend reality will edify insofar as they reflect this symmetry this is true of theoretical models empirical methods and algorithms indeed if the design of mechanisms is by rearrangement of natural matter their survival value will depend on the degree to which they retain the symmetry of the original matter this comment encompasses complex machinery and sophisticated political social and economic institutions the paper simply embroiders this observation

the climacteric in late victorian britain and france a reappraisal of the evidence the paper investigates the question of whether the trend rate of growth of gdp slowed down in britain or france in the nineteenth century we establish that real gdp belongs to the trend stationary process class of time series in each case rather than the difference stationary process and using kalman filter techniques analyse trends in a model incorporating time varying parameters without specifying breakpoints in advance we find contrary to the literature that neither country experienced a climacteric our results suggest that economic historians have been prone to exaggerated views of variations in trend economic growth

does gnp have a unit root a re evaluation abstract stock and watson 1986 test the hypothesis that real per capita gnp has a unit root by using a test statistic due to phillips 1985 which incorporates a non parametric correction for the serial correlation induced by system and error dynamics the version of this test that is used by stock and watson does not accomodate the presence of a drift and to compensate they detrend the series by extracting a 1 5 annual trend growth we use a version of this class of non parametric tests developed by phillips and perron 1986 which allows for an estimated drift and reassess the stock and watson findings

public expenditure and national income causality further evidence on the role of omitted variables whether changes in public expenditure growth help predict changes in national income growth and or vice versa remains an important issue of sustained interest in the empirical public finance literature in recent years attention has mainly been confined to two specific areas namely estimation of the impact of the public sector on output growth by means of regression analysis and causality testing unfortunately the outcome of both types of analysis has been inconclusive focussing on the impact studies we note that a number of empirical investigations have attempted to measure the effect of the size of the public sector on overall economic growth for instance ram 19 utilizing a two sector model found that growth of government size has a positive effect on economic growth landau 14 15 however presented opposite evidence indicating that the government sector expansion led to a decline in output growth for many dcs and ldcs since 1960 in a recent study barth keleher and russek 4 estimated variants of ram s models with data for 30 countries their empirical results largely support a negative relationship between the scale of government and aggregate economic activity furthermore using the hausman procedure they rejected the hypothesis that the independent variables namely real government spending or other measures of the scale of the government depending on the specification in the regression equations are exogenous this strongly suggests that the conclusions reached by

tax loss selling and the january effect evidence from municipal bond closed end funds this paper provides direct evidence supporting the tax loss selling hypothesis as an explanation of the january effect examining turn of the year return and volume patterns for municipal bond closed end funds which are held mostly by tax sensitive individual investors we document a january effect for these funds but not for their underlying assets we provide evidence that this effect can be largely explained by tax loss selling activities at the previous year end moreover we find that funds associated with brokerage firms display more tax loss selling behavior suggesting that tax counseling plays a role among the numerous stock return anomalies probably none has generated more interest than that of the turn of the year or january effect the phenomenon in which small capitalization stocks realize unusually high returns in early january 1 the literature offers a number of hypotheses to explain this phenomenon including the tax loss selling hypothesis the window dressing hypothesis the insider trading information release hypothesis and the seasonality of the risk return relation hypothesis given existing evidence in some support for the first two hypotheses the debate continues with respect to which of these the tax loss selling of individual investors or the window dressing of

does output have a unit root new international evidence in this paper unit root tests for per capita output of 12 oecd countries are performed using traditional unit root tests it follows that the unit root hypothesis cannot be rejected except for the us however following the approach of perron 1989 which takes shifts in mean and or trend into account the null hypothesis of a unit root can be rejected in most countries in our sample in contrast to perron a method suggested by christiano 1992 is used to determine the break date endogenously

the effect of holdings data frequency on conclusions about mutual fund behavior abstract a number of articles in financial economics have used quarterly or semi annual mutual fund holdings data to test hypotheses about investment manager behavior this article reexamines four well known hypotheses in finance to determine whether the results of prior tests of these hypotheses remain valid when higher frequency monthly holdings data are employed the areas examined are momentum trading tax motivated trading window dressing and tournament behavior we find that the use of monthly holdings data rather than quarterly holdings data or in the case of tournament behavior holdings data rather than monthly return data change and in some cases reverse previous results this occurs because monthly holdings data capture a large number of trades missed by quarterly data 18 5 of the trades and permit a more precise estimation of the timing of trades

forecasting rational expectations and the phillips curve an empirical investigation abstract the rational expectations version of the phillips curve is empirically evaluated for switzerland using a wide variety of specifications it turns out that the results are highly sensitive to measurement of both the natural rate and expectations of nominal variables no reliable phillips curve seems to exist in addition information on the relative quality of different forecasting schemes is obtained for a number of important macroeconomic variables

international evidence on the size of the random walk in output this paper contributes three extensions of cochrane s work on measuring the relative stability of long term growth it estimates variance ratios for nine oecd countries over the period 1871 1985 presents an improved approximation to the distribution of the variance ratio and considers the comovements of long growth cycles across countries the evidence indicates that the relative stability of long term growth found by cochrane is unique to the united states relative to the united states most countries have more variable dynamics at low frequencies and smoother dynamics at frequencies traditionally associated with business cycles

time consistent monetary policy under output persistence this note merges the fact that real activity is persistent with a barro gordon type model of endogenous monetary policy it shows that persistence crucially affects policy choices this applies in non cooperative games with a finite horizon and in games with an infinite horizon always enforceable inflation announcements move higher when output persistence increases policymakers who discount future utility by 10 annually produce about ten times as much inflation under near hysteresis as in a natural rate scenario a change in the policymaker s time preference may affect inflation both ways depending on present time preference and persistence

institutions and individuals at the turn of the year this article evaluates the tax loss selling hypothesis against the window dressing hypothesis as explanations for turn of the year anomalies we examine differences between securities dominated by individual investors versus those dominated by institutional investors and find that the effect is more pervasive in the former controlling for capitalization we find that in early january late december stocks with greater individual investor interest outperform underperform stocks with greater institutional investor interest these results hold for both stocks that previously appreciated in value and stocks that previously depreciated in value the results are most consistent with the tax loss selling hypothesis as an explanation for the turn of the year effect

calendar anomalies abnormal returns at calendar turning points 1988 calendar anomalies abnormal returns at calendar turning points financial analysts journal vol 44 no 6 pp 28 39

nonlinear business cycle dynamics cross country evidence on the persistence of aggregate shocks i introduction economists have long been interested in the dynamics of business cycles particularly regarding the symmetry of expansions and contractions more recently the specification of stochastic trends in economic growth has generated concerns about the relative persistence of positive and negative shocks to the economy several papers have looked at the persistence of business cycles including nelson and plosser 1982 campbell and mankiw 1987 cochrane 1988 diebold and rudebusch 1989 balke and fomby 1990 zelhorst and de haan 1994 and bradley and jansen 1995 while results vary especially on the issue of a unit root in output the overarching result is that output fluctuations are highly persistent one question not asked by the above authors is whether business cycle dynamics are asymmetric this issue has been investigated by neftci 1984 falk 1986 delong and summers 1986 hamilton 1989 diebold and rudebusch 1990 and terasvirta and anderson 1991 these authors take a variety of approaches but they reach a general conclusion that there is some evidence of asymmetric business cycle dynamics however most of these studies ask if contractions are shorter and steeper than expansions except hamilton 1989 they do not ask if there is a difference in persistence due to the asymmetries in a recent paper beaudry and koop 1993 propose a set of methods for simultaneously examining these two questions specifically beaudry and koop bk recommend the augmentation of the standard arma representation of real output growth through the inclusion of a nonlinear term that captures the relative state of the economy this augmentation provides for nonlinear dynamics and the possibility of asymmetric dynamic responses to positive and negative shocks in addition calculation of the implied impulse responses permits detection of the relative persistence implied by the combination of asymmetric cycle dynamics and stochastic trend based upon their analysis of u s data bk conclude that the response of the economy to positive and negative shocks is indeed asymmetric and the imposition of symmetry on impulse responses has likely led to misleading measures of persistence bk p 162 as a result bk conclude we find that the effects of negative shocks to be mainly temporary and the effects of positive shocks to be very persistent bk p 162 if bk s results are correct they have strong implications for the way macro economists view economic fluctuations and will in their words contribute to a reappraisal of some macroeconomic theories that is bk s results suggest that macroeconomic models must be revised to provide for temporary effects of negative shocks but permanent effects of positive shocks because of the potential importance of bk s results we examine the robustness of those results by modifying and extending bk s proposed methods of testing not only do we extend the analysis to the other six g7 countries besides the united states but also we redefine in a sensible way the nature of the nonlinear dynamics overall our results from other economies provide only mixed support for the asymmetry of cyclical dynamics and the lack of persistence of negative shocks ii the model to be estimated in the bk framework the estimated model includes an asymmetric response term the asymmetry is generated by a variable that measures the strength of a recession the variable is calculated as the distance between current real gdp and the previous peak level of real gdp that is bk define a measure they call current depth of the recession cdr where 1 cdr sub t max y sub t j sub j greater than or equal to 0 y sub t with this definition in place bk recommend augmenting an autoregressive model of real gdp growth as 2 phi l delta y sub t delta omega l 1 cdr sub

international evidence on the persistence of economic fluctuations abstract this paper presents new evidence on the persistence of fluctuations in real gnp we estimate two measures of persistence nonparametrically using post war quarterly data from canada france germany italy japan the united kingdom and the united states we compare these estimates with monte carlo results from various ar 2 processes for six out of seven countries the point estimates indicate that a 1 shock to output should change the long run unvariate forecast of output by well over 1 low order arma models yield similar conclusions finally we examine the persistence in relative outputs of different countries

an empirical analysis of excess interbank liquidity a case study of pakistan we investigate the drivers of excess interbank liquidity in pakistan using the autoregressive distributed lag approach on weekly data for december 2005 to july 2011 we find that the financing of the government budget deficit by the central bank and nonbanks leads to persistence in excess liquidity moreover we identify a structural shift in the interbank market in june 2008 before june 2008 low credit demand was driving the excess liquidity holdings by banks after june 2008 banks precautionary investments in risk free securities drive excess liquidity holdings monetary policy is less effective if banks hold excess liquidity for precautionary reasons

tests of a rational expectations structural neutrality model with persistent effects of monetary disturbances abstract this paper describes tests of a rational expectations structural neutrality resn model capable of accounting for the persistent effects of aggregate demand shocks the model imposes the identifying restriction that only contemporaneous shocks to aggregate demand affect a vector stochastic process of highly cyclic real variables tests are performed using a well known measure of unanticipated monetary change as the demand disturbance the results suggest that resn models observationally inequivalent from keynesian models can be constructed in such a way as to account for observable relationships between monetary and real variables

volatility and persistence of fluntuations individual production series in italy 1890 1985 the analysis is focused on possible time related changes in the cyclical behaviour of production using a set of individual production series disaggregate data are used to analyse whether short run fluctuations have actually become less extreme or erratic in time and whether the tendency of shocks to have permanent or transitory effects has changed between the pre war and post war eras a third aspect of cyclical trends examined concerns the correlation of short term changes across sectors the main finding of the paper is that there has been little change in the behaviour of the individual series over time in fluctuation size persistence and frequency thus a reduction in variability appears also to be due to a problem of statistical measurement rather then suggesting as the standard literature does that demand shocks were unimportant in the post war period which implies that supply shocks were more important an estimate of the italian experience gives evidence of the importance of both causes

personal income taxes and the january effect small firm stock returns before the war revenue act of 1917 a note this paper tests the tax explanation of the january effect by examining small firm stock returns before the war revenue act of 1917 no evidence of a turn of the year effect is found this paper also extends previous authors work on the subject to 191829 a january effect is found during that period the large abnormal returns earned by small firm stocks during the first few days of january is attracting considerable attention from financial economists specifically keim 10 shows that over the entire 1963 79 period the average difference between risk adjusted returns of small and large firms is about 0 7 per day during january even more striking is the finding of keim 9 that over the entire 1931 78 period the relation between daily abnormal returns and size is always negative and more pronounced in january than in any other month similarly ibbotson and sinquefield 8 note that the average return on the quintile of nyse stocks with the lowest market values exceeds the return on the standard and poor s corporate index for 50 of the 56 januarys from 1926 81 there is no accepted theory linking the excess returns of small firms in january with the change of the tax year nevertheless the plausibility of a relation between taxes and stock return seasonality has led roll 17 brown et al 6 berges mcconnell and schlarbaum 2 and reinganum 16 among others to investigate personal income taxes as an explanation for the january effect this paper uses a different methodology and reaches stronger conclusions than any of the above papers specifically i examine the returns of small firms for the period from 1900 to 1929 prior to the revenue act of 1917 marginal income tax rates for investors were very low or zero the major finding of this paper is that there is no evidence that small firms earned abnormal returns in january prior to the 1917 tax act i also show that a january effect does appear during the years 1918 29 therefore i cannot reject a tax explanation for the january effect

anticipated money inflation uncertainity and real economic activity this paper critically examines a number of maintained hypotheses that are necessarily being tested along with the basic notion derived from the rational expectations re formulation of lucas 1972 19 73 that only unanticipated money matters the trend stationary representation of secular real output of lucas and others is replaced by a difference stationary representation found by nelson and plosser 1980 to be consistent with u s historical data the impact of inflation uncertainty on real activity is considered attention is paid to possible mis measurement of agents ex ante anticipated money growth it is found that three alternative measures of anticipated money growth produce a stable impact on growth of output and employment contemporaneous and lagged values of unanticipated money growth have no significant additional explanatory power in the presence of any one of the three measures of anticipated money growth beyond this it is impossible to reject the hypothesis that the initial positive real impact of anticipated money is not temporary inflation uncertainty is found to act as a significant depressant of real economic activity in the presence of all tested combinations of anticipated and unanticipated money growth this abstract was borrowed from another version of this item

short term interest rates as predictors of inflation on testing the hypothesis that the real rate of interest is constant in an innovative and provocative paper in this review eugene fama presents evidence which appears to be consistent with the joint hypothesis that the real rate of interest ignoring taxes is a constant and that the market for u s treasury bills is efficient in the sense of embodying rational expectations those findings are strikingly at variance with a long list of previous studies which seemed to support the view that the real rate of interest varies over time and can be related to economic variables such as real output monetary policy and so forth 2 the methodologies which lead to these contradictory conclusions are quite different previous studies had followed the lead of irving fisher by relating nominal interest rates to distributed lags on past rates of inflation 3 these distributed lags are generally interpreted as approximations to the market s expected rate of inflation and thus any remaining variation is attributed to variation in the real rate 4 fama s methodology on the other hand draws on the fact that the difference between the market interest rate and the subsequently observed rate of inflation the ex post real interest rate consists by definition of the ex ante real interest rate plus a pure forecasting error 5 the hypothesis of market efficiency implies that these forecasting errors must be serially random thus observing ex post real rates is equivalent to observing ex ante real rates with random measurement error these errors of course confound the problem of identifying variation in the ex ante real rate in this paper we will argue that the relative magnitude of these measurement errors is such that the tests carried out by fama were not powerful enough to reject the joint hypothesis that the ex ante real rate is a constant and expectations are rational more powerful tests which are presented in this paper using the same data do lead to rejection of that hypothesis of course rejection