Showing papers by "National Bureau of Economic Research published in 2000"

Information Asymmetry, Corporate Disclosure and the Capital Markets: A Review of the Empirical Disclosure Literature

Abstract: Corporate disclosure is critical for the functioning of an efficient capital market. Firms provide disclosure through regulated financial reports, including the financial statements, footnotes, management discussion and analysis, and other regulatory filings. In addition, some firms engage in voluntary communication, such as management forecasts, analysts? presentations and conference calls, press releases, internet sites, and other corporate reports. Finally, there are disclosures about firms by information intermediaries, such as financial analysts, industry experts, and the financial press.

International Data on Educational Attainment Updates and Implications

Abstract: This paper presents a data set that improves the measurement of educational attainment for a broad group of countries. We extend our previous estimates of educational attainment for the population over age 15 and over age 25 up to 1995 and provide projections for 2000. We discuss the estimation method for the measures of educational attainment and relate our estimates to alternative international measures of human capital stocks.

Technical Change, Inequality, and the Labor Market

Abstract: This essay discusses the effect of technical change on wage inequality. I argue that the behavior of wages and returns to schooling indicates that technical change has been skill-biased during the past sixty years. Furthermore, the recent increase in inequality is most likely due to an acceleration in skill bias. In contrast to twentieth century developments, most technical change during the nineteenth century appears to be skill-replacing. I suggest that this is because the increased supply of unskilled workers in the English cities made the introduction of these technologies profitable. On the other hand, the twentieth-century has been characterized by skill-biased technical change because the rapid increase in the supply of skilled workers has induced the development of skill-complementary technologies. The recent acceleration in skill bias is in turn likely to have been a response to the acceleration in the supply of skills during the past several decades.

Testing Tradeoff and Pecking Order Predictions About Dividends and Debt

Abstract: Confirming predictions shared by the tradeoff and pecking order models, more profitable firms and firms with fewer investments have higher dividend payouts. Confirming the pecking order model but contradicting the tradeoff model, more profitable firms are less levered. Firms with more investments have less market leverage, which is consistent with the tradeoff model and a complex pecking order model. Firms with more investments have lower long-term dividend payouts, but dividends do not vary to accommodate short-term variation in investment. As the pecking order model predicts, short-term variation in investment and earnings is mostly absorbed by debt.

The Determinants of National Innovative Capacity

Abstract: Motivated by differences in R&D productivity across advanced economies, this paper presents an empirical examination of the determinants of country-level production of international patents. We introduce a novel framework based on the concept of national innovative capacity. National innovative capacity is the ability of a country to produce and commercialize a flow of innovative technology over the long term. National innovative capacity depends on the strength of a nation's common innovation infrastructure (cross-cutting factors which contribute broadly to innovativeness throughout the economy), the environment for innovation in its leading industrial clusters, and the strength of linkages between these two areas. We use this framework to guide our empirical exploration into the determinants of country-level R&D productivity, specifically examining the relationship between international patenting (patenting by foreign countries in the United States) and variables associated with the national innovative capacity framework. While acknowledging important measurement issues arising from the use of patent data, we provide evidence for several findings. First, the production function for international patents is surprisingly well-characterized by a small but relatively nuanced set of observable factors, including R&D manpower and spending, aggregate policy choices such as the extent of IP protection and openness to international trade, and the share of research performed by the academic sector and funded by the private sector. As well, international patenting productivity depends on each individual country's knowledge stock.' Further, the predicted level of national innovative capacity has an important impact on more downstream commercialization and diffusion activities (such as achieving a high market share of high-technology export markets). Finally, there has been convergence among OECD countries in terms of the estimated level of innovative capacity over the past quarter century.

Bad News Travels Slowly: Size, Analyst Coverage, and the Profitability of Momentum Strategies

Abstract: Various theories have been proposed to explain momentum in stock returns. We test the gradual-information-diffusion model of Hong and Stein ~1999! and establish three key results. First, once one moves past the very smallest stocks, the profitability of momentum strategies declines sharply with firm size. Second, holding size fixed, momentum strategies work better among stocks with low analyst coverage. Finally, the effect of analyst coverage is greater for stocks that are past losers than for past winners. These findings are consistent with the hypothesis that firm-specific information, especially negative information, diffuses only gradually across the investing public.

Who Trusts Others

Abstract: Both individual experiences and community characteristics influence how much people trust each other. Using individual level data drawn from US localities we find that the strongest factors associated with low trust are: i) a recent history of traumatic experiences; ii) belonging to a group that historically felt discriminated against, such as minorities (blacks in particular) and, to a lesser extent, women; iii) being economically unsuccessful in terms of income and education; iv) living in a racially mixed community and/or in one with a high degree of income disparity. Religious beliefs and ethnic origins do not significantly affect trust. The role of racial cleavages leading to low trust is confirmed when we explicitly account for individual preferences on inter-racial relationships: within the same community, individuals who express stronger feelings against racial integration trust relatively less the more racially heterogeneous the community is.

Venture Capital and the Professionalization of Start-Up Firms: Empirical Evidence

Abstract: This paper examines empirical evidence on the impact that venture capitalists can have on the development path of new firms. We use a hand-collected data set on Silicon Valley start-up companies that allows us to "look inside the black box" and analyze the influence of venture capital on the professionalization of firms' internal organization. The evidence suggests that there is a "soft" facet to venture capitalists, in terms of supporting companies to build up their human resources within the organization. Venture capital is also important at the top, in that venture capital backed companies are more likely and faster to bring in outsiders as CEOs. These CEO replacements are often accompanied with the founder departing from the company, suggesting that venture capitalists also exhibit a "hard" facet in terms of exercising control. The paper examines how these various roles are interrelated, and shows how the role of venture capital varies with the state of the company.

Estimating Production Functions Using Inputs to Control for Unobservables

Abstract: We introduce a new method for conditioning out serially correlated unobserved shocks to the production technology by building ideas first developed in Olley and Pakes (1996). Olley and Pakes show how to use investment to control for correlation between input levels and the unobserved firm-specific productivity process. We prove that like investment, intermediate inputs (those inputs which are typically subtracted out in a value-added production function) can also solve this simultaneity problem. We highlight three potential advantages to using an intermediate inputs approach relative to investment. Our results indicate that these advantages are empirically important.

Estimating the Return to Schooling: Progress on Some Persistent Econometric Problems

Abstract: This paper reviews a set of recent studies that have attempted to measure the causal effect of education on labor market earnings by using institutional features of the supply side of the education system as exogenous determinants of schooling outcomes. A simple theoretical model that highlights the role of comparative advantage in the optimal schooling decision is presented and used to motivate an extended discussion of econometric issues, including the properties of ordinary least squares and instrumental variables estimators. A review of studies that have used compulsory schooling laws, differences in the accessibility of schools, and similar features as instrumental variables for completed education reveals that the resulting estimates of the return to schooling are typically as big or bigger than the corresponding ordinary least squares estimates. One interpretation of this finding is that marginal returns to education among the low-education subgroups typically affected by supply-side innovations tend to relatively high, reflecting their high marginal costs of schooling, rather than low ability that limits their return to education.

Assessing the Contribution of Venture Capital to Innovation

Abstract: We examine the influence of venture capital on patented inventions in the United States across twenty industries over three decades. We address concerns about causality in several ways, including exploiting a 1979 policy shift that spurred venture capital fundraising. We find that increases in venture capital activity in an industry are associated with significantly higher patenting rates. While the ratio of venture capital to R&D averaged less than 3% from 1983-1992, our estimates suggest that venture capital may have accounted for 8% of industrial innovations in that period.(Publication abstract)

Disappearing Dividends: Changing Firm Characteristics or Lower Propensity to Pay?

Abstract: The percent of firms paying cash dividends falls from 66.5 in 1978 to 20.8 in 1999. The decline is due in part to the changing characteristics of publicly traded firms. Fed by new lists, the population of publicly traded firms tilts increasingly toward small firms with low profitability and strong growth opportunities characteristics typical of firms that have never paid dividends. More interesting, we also show that controlling for characteristics, firms become less likely to pay dividends. This lower propensity to pay is at least as important as changing characteristics in the declining incidence of dividend payers.

The Simple Economics of Open Source

Abstract: There has been a recent surge of interest in open source software development, which involves developers at many different locations and organizations sharing code to develop and refine programs. To an economist, the behavior of individual programmers and commercial companies engaged in open source projects is initially startling. This paper makes a preliminary exploration of the economics of open source software. We highlight the extent to which labor economics, especially the literature on 'career concerns', and industrial organization theory can explain many of these projects' features. We conclude by listing interesting research questions related to open source software.

Returns from Investing in Equity Mutual Funds 1971-1991

Abstract: Several recent studies suggest that equity mutual fund managers achieve superior returns and that considerable persistence in performance exists. This study utilizes a unique data set including returns from all equity mutual funds existing each year. These data enable us more precisely to examine performance and the extent of survivorship bias. In the aggregate, funds have under performed benchmark portfolios both after management expenses and even gross of expenses. Survivorship bias appears to be more important than other studies have estimated. Moreover, while considerable performance persistence existed during the 1970s, there was no consistency in fund returns during the 1980s.

Fear of Floating

Abstract: In recent years, many countries have suffered severe financial crises, producing a staggering toll on their economies, particularly in emerging markets. One view blames fixed exchange rates-- soft pegs'--for these meltdowns. Adherents to that view advise countries to allow their currency to float. We analyze the behavior of exchange rates, reserves, the monetary aggregates, interest rates, and commodity prices across 154 exchange rate arrangements to assess whether official labels' provide an adequate representation of actual country practice. We find that, countries that say they allow their exchange rate to float mostly do not--there seems to be an epidemic case of fear of floating.' Since countries that are classified as having a free or a managed float mostly resemble noncredible pegs--the so-called demise of fixed exchange rates' is a myth--the fear of floating is pervasive, even among some of the developed countries. We present an analytical framework that helps to understand why there is fear of floating.

A No-Arbitrage Vector Autoregression of Term Structure Dynamics with Macroeconomic and Latent Variables

Abstract: This paper describes the joint dynamics of bond yields and macroeconomic variables in a vector autoregression, where identifying restrictions are based on the absence of arbitrage. Using a term structure model with inflation and economic growth factors, we investigate how macro factors affect bond prices and the dynamics of the yield curve. Higher order autoregressive lags and moving-average error terms for macro factors are accommodated. The macro factors are augmented by traditional unobserved term-structure factors. Models that incorporate macro factors give better forecasts than traditional term-structure models with only unobservable factors. Variance decompositions show that macro factors explain up to 30\% of the variation in bond yields. Macro factors primarily explain movements at the short end and middle of the yield curve while unobservable factors still account for most movement at the long end of the yield curve.

Resuscitating Real Business Cycles

Abstract: The Real Business Cycle (RBC) research program has grown spectacularly over the last decade, as its concepts and methods have diffused into mainstream macroeconomics. Yet, there is increasing skepticism that technology shocks are a major source of business fluctuations. This chapter exposits the basic RBC model and shows that it requires large technology shocks to produce realistic business cycles. While Solow residuals are sufficiently volatile, these imply frequent technological regress. Productivity studies permitting unobserved factor variation find much smaller technology shocks, suggesting the imminent demise of real business cycles. However, we show that greater factor variation also dramatically amplifies shocks: a RBC model with varying capital utilization yields realistic business cycles from small, nonnegative changes in technology.

Ferreting Out Tunneling: An Application to Indian Business Groups

Abstract: In many countries, controlling shareholders are accused of tunneling, transferring resources from companies where they have few cash flow rights to ones where they have more cash flow rights. Quantifying the extent of such tunneling, however, has proven difficult because of its illicit nature. This paper develops a general empirical technique for quantifying tunneling. We use the responses of different firms to performance shocks to map out the flow of resources within a group of firms and to quantify the extent to which the marginal dollar is tunneled. We apply our technique to data on Indian business groups. The results suggest a significant amount of tunneling between firms in these groups.

Monetary Policy and Asset Price Volatility

Abstract: We explore the implications of asset price volatility for the management of monetary policy. We show that it is desirable for central banks to focus on underlying inflationary pressures. Asset prices become relevant only to the extent they may signal potential inflationary or deflationary forces. Rules that directly target asset prices appear to have undesirable side effects. We base our conclusions on (i) simulation of different policy rules in a small scale macro model and (ii) a comparative analysis of recent U.S. and Japanese monetary policy.

Plants and Productivity in International Trade

Abstract: We reconcile international trade theory with findings of enormous plant-level heterogeneity in exporting and productivity. Our model extends basic Ricardian theory to accommodate many countries, geographic barriers, and imperfect competition. Fitting the model to bilateral trade among the United States and its 46 major trade partners, we see how well it can explain basic facts about U.S. plants: (i) productivity dispersion, (ii) the productivity advantage of exporters, (iii) the small fraction who export, (iv) the small fraction of revenues from exporting among those that do, and (v) the much larger size of exporters. We pick up all these basic qualitative features, and go quite far in matching them quantitatively. We examine counterfactuals to assess the impact of various global shifts on productivity, plant entry and exit, and labor turnover in U.S. manufacturing.

Investing for the Long Run When Returns are Predictable

Abstract: We examine how the evidence of predictability in asset returns affects optimal portfolio choice for investors with long horizons. Particular attention is paid to estimation risk, or uncertainty about the true values of model parameters. We find that even after incorporating parameter uncertainty, there is enough predictability in returns to make investors allocate substantially more to stocks, the longer their horizon. Moreover, the weak statistical significance of the evidence for predictability makes it important to take estimation risk into account; a long-horizon investor who ignores it may over-allocate to stocks by a sizeable amount.

The Power of the Pill: Oral Contraceptives and Women's Career and Marriage Decisions

Abstract: The fraction of U.S. college graduate women entering professional programs increased substantially around 1970 and the age at first marriage among all U.S. college graduate women soared just after 1972. We explore the relationship between these two changes and how each was shaped by the diffusion of the birth control pill among young, single college educated women. Although the pill' was approved in 1960 by the FDA and diffused rapidly among married women, it did not diffuse among young single women until the late 1960s when a series of state law changes reduced the age of majority and extended mature minor decisions. We model the impact of the pill on women's careers as consisting of two effects. The pill had a direct positive effect on women's career investment by almost eliminating the chance of becoming pregnant and thus the cost of having sex. The pill also created a social multiplier effect by encouraging the delay of marriage generally and thus increasing a career woman's likelihood of finding an appropriate mate after professional school. We present a collage of evidence pointing to the power of the pill in lowering the costs of long-duration professional education for women. The evidence consists of the striking coincidences in the timing of changes in career investment, marriage age, state laws, and pill use among young single women. The connection between changes in the age at first marriage and the pill is further explored using state variation in laws affecting young single women's pill access. We also evaluate alternative explanations for the changes in career and marriage.

The Effects of Class Size on Student Achievement: New Evidence from Population Variation

Abstract: I identify the effects of class size on student achievement using longitudinal variation in the population associated with each grade in 649 elementary schools. I use variation in class size driven by idiosyncratic variation in the population. I also use discrete jumps in class size that occur when a small change in enrollment triggers a maximum or minimum class size rule. The estimates indicate that class size does not have a statistically significant effect on student achievement. I rule out even modest effects (2 to 4 percent of a standard deviation in scores for a 10 percent reduction in class size).

What Makes Investors Trade

Abstract: A unique data set allows us to monitor the buys, sells, and holds of individuals and institutions in the Finnish stock market on a daily basis. With this data set, we employ Logit regressions to identify the determinants of buying and selling activity over a two-year period. We find evidence that investors are reluctant to realize losses, that they engage in tax-loss selling activity, and that past returns and historical price patterns, such as being at a monthly high or low, affect trading. There also is modest evidence that life cycle trading plays a role in the pattern of buys and sells.

Long Memory and Regime Switching

Abstract: The theoretical and empirical econometric literatures on long memory and regime switching have evolved largely independently, as the phenomena appear distinct. We argue, in contrast, that they are intimately related, and we substantiate our claim in several environments, including a simple mixture model, Engle and Lee's (1999) stochastic permanent break model, and Hamilton's (1989) Markov switching model. In particular, we show analytically that stochastic regime switching is easily confused with long memory, even asymptotically, so long as only a small' amount of regime switching occurs, in a sense that we make precise. A Monte Carlo analysis supports the relevance of the theory and produces additional insights.

The Human Capital Model

Abstract: This chapter contains a detailed treatment of the human capital model of the demand for health which was originally developed in 1972. Theoretical predictions are discussed, and theoretical extensions of the model are reviewed. Empirical research that tests the predictions of the model or studies causality between years of formal schooling completed and good health is surveyed. The model views health as a durable capital stock that yields an output of healthy time. Individuals inherit an initial amount of this stock that depreciates with age and can be increased by investment. The household production function model of consumer behavior is employed to account for the gap between health as an output and medical care as one of many inputs into its production. In this framework the “shadow price” of health depends on many variables besides the price of medical care. It is shown that the shadow price rises with age if the rate of depreciation on the stock of health rises over the life cycle and falls with education (years of formal schooling completed) if more educated people are more efficient producers of health. An important result is that, under certain conditions, an increase in the shadow price may simultaneously reduce the quantity of health demanded and increase the quantities of health inputs demanded.

The Colonial Origins of Comparative Development: An Empirical Investigation

Abstract: This article uses the different mortality rates of European colonialists to estimate the effect of institutions on economic performance. Europeans adopted very different colonization policies in different colonies. In places where mortality rates were high they did not settle, but set up extractive institutions that exist to the present day. By exploring the different mortality rates faced by soldiers, bishops and sailors in the colonies in the 17th, 18th and 19th Centuries, we were able to estimate the long-term effect of colonial institutions on per capita income.

Peer Effects in the Classroom: Learning from Gender and Race Variation

Abstract: Peer effects are potentially important for understanding the optimal organization of schools, jobs, and neighborhoods, but finding evidence is difficult because people are selected into peer groups based, in part, on their unobservable characteristics. I identify the effects of peers whom a child encounters in the classroom using sources of variation that are credibly idiosyncratic, such as changes in the gender and racial composition of a grade in a school in adjacent years. I use specification tests, including one based on randomizing the order of years, to confirm that the variation I use is not generated by time trends or other non-idiosyncratic forces. I find that students are affected by the achievement level of their peers: a credibly exogenous change of 1 point in peers' reading scores raises a student's own score between 0.15 and 0.4 points, depending on the specification. Although I find little evidence that peer effects are generally non-linear, I do find that peer effects are stronger intra-race and that some effects do not operate through peers' achievement. For instance, both males and females perform better in math in classrooms that are more female despite the fact that females' math performance is about the same as that of males.