THE DECREASING INFLUENCE OF DOMESTIC MARKET STRUCTURE ON RACIAL EARNINGS DIFFERENTIALS: 1984 TO 1996

This study investigates the market concentration/racial earnings discrimination relationship in two periods: 1984–90 and 1991–96. In each period, the racial wage gap and the residual wage gap are compared for union and nonunion workers in monopolistic and competitive industries. The authors find no evidence of market structure–driven discrimination for union workers in either period. However, from the first to the second period they find evidence of increased racial earnings differentials for nonunion workers, yet market structure–driven discrimination decreases. The authors suggest that concentration has become a less effective measure of market power and firms' latitude to discriminate. (JEL J31, J71 )     

Market segmentation and information values of earnings announcements: Some empirical evidence from an event study on the Chinese stock market

This paper investigates the trading activities of two distinct classes of shareholders, namely, the Chinese domestic investors and the foreign investors in the segmented Chinese A- and B-share markets, respectively. We conduct an event study on the annual earnings announcements based on two different accounting standards: International accounting standards (IAS) and PRC generally accepted accounting principles (PRC GAAP). The earnings announcements based on IAS and PRC GAAP are value relevant. The investors in the B-share market react to both the IAS and PRC GAAP earnings announcements, while the investors in the A-share market pay more attention to the PRC GAAP earnings reports. In the B-share market, positive abnormal returns are associated with positive earnings surprise and negative abnormal returns go with negative earnings surprise. We find preevent abnormal trading volumes without significant price changes for the A shares, which may be due to existing information in the A-share market prior to earnings announcements. The postevent abnormal trading volumes last for a longer period in the A-share market than in the B-share market.     

The Value Relevance of Earnings and Nonearnings Information in Regulated and Deregulated Markets: The Case of the Airline Industry

This paper examines the valuation effects of earnings and two nonearnings-based measurements (book values and operating cash flow) on security prices of airline companies under two different market structures: regulated and deregulated. The literature lacks empirical evidence in examining the relative importance of earnings and nonearnings accounting-based measurements in regulated and deregulated markets, especially in the airlines industry. We compare coefficient estimates of regressing stock prices on earnings, book value, and cash flow from operations of airline companies during regulated and deregulated times. A control sample of manufacturing companies is also used for supporting inferences from the airline sample’s findings. In a typical regulated market, using cost recovery plus an adequate rate of return on assets, security prices are highly aligned with nonearnings measurements such as the book value. In the airline industry, regulation took the form of guaranteed routes and subsidies to service rural areas, giving rise to a differential effect of both earnings and nonearnings measurements. Under deregulation, airline firms operate in highly competitive markets with large airline firms enjoying the benefits of economy of scale and service diversification. Thus, the asset capitalization (book value), cash flow, and operational efficiencies (earnings) would be major indicators in the market assessment of the firm’s future profitability and security price. This paper finds that nonearnings measures have higher explanatory power of security prices in regulated times for the airline firms. In deregulated times, although earnings have a stronger relationship with prices, nonearnings measures continued to influence stock price levels, reflecting airline specific economics.

资本市场开放与企业真实盈余管理——基于“陆港通”的经验证据

资本市场开放不仅是扩大国际融资、更好地利用国际金融市场的需要,而且对我国资本市场发育和上市公司行为具有多重外部治理效应。本文借助我国内地与香港资本市场互联互通机制这一准自然实验,研究资本市场开放对企业真实盈余管理的影响。研究发现:(1)总体上,“陆港通”机制的实施显著降低了标的公司真实盈余管理程度。(2)委托代理问题是企业进行盈余管理的重要原因,而“陆港通”机制开通后,能够缓解标的公司代理矛盾,进而约束管理层的真实盈余管理行为。(3)当资本市场信息环境改善、管理层面临较大股票抛售压力以及大股东监督力度较强时,“陆港通”抑制企业真实盈余管理行为的治理效果更强。本文结果表明,资本市场开放有助于提高我国上市公司财务信息披露质量及公司治理水平。     

资本市场开放与企业真实盈余管理——基于“陆港通”的经验证据

资本市场开放不仅是扩大国际融资、更好地利用国际金融市场的需要,而且对我国资本市场发育和上市公司行为具有多重外部治理效应。本文借助我国内地与香港资本市场互联互通机制这一准自然实验,研究资本市场开放对企业真实盈余管理的影响。研究发现:(1)总体上,“陆港通”机制的实施显著降低了标的公司真实盈余管理程度。(2)委托代理问题是企业进行盈余管理的重要原因,而“陆港通”机制开通后,能够缓解标的公司代理矛盾,进而约束管理层的真实盈余管理行为。(3)当资本市场信息环境改善、管理层面临较大股票抛售压力以及大股东监督力度较强时,“陆港通”抑制企业真实盈余管理行为的治理效果更强。本文结果表明,资本市场开放有助于提高我国上市公司财务信息披露质量及公司治理水平。     

Market Organisation and Trading Relationships

In this paper we give a theoretical model of buyers' behaviour on a market for a perishable good where no prices are posted. We show that if buyers learn from their own previous experience there is a sharp division between those who learn to be loyal to certain sellers and those who continue to 'shop around'. This feature remains in more general models which are simulated and is consistent with empirical data from the Marseille fish market.     

Uniqueness of equilibrium in sealed high-bid auctions

For the case of two buyers we show that equilibrium in the sealed high-bid auction is unique when (i) buyers' reservations prices are drawn independently from distributions with finite support and positive mass at the lower endpoint; (ii) buyers have private values; and (iii) buyers' preferences are log supermodular. For more than two buyers, we obtain the same result under the additional assumptions that (iv) buyers with the same reservation price have the same preferences; (v) buyers are risk neutral or risk averse with non-increasing absolute risk aversion; and (vi) the supports of the different buyers' distributions of reservation prices have the same upper endpoint.     

Returns to skills,incentives to study and optimal educational standards

In imperfectly competitive labor markets returns to skills are lower than their productivity and educational standards may play an important role in stimulating students to provide efforts. We propose a principal-agent model to analyze the determinants of student effort and the setting of standards by a policy-maker maximizing alternative social welfare functions. We show that if the policy-maker takes into account individuals' future earnings, he finds it optimal to set lower standards in more distorted labor markets, whereas higher standards would be preferable for efficiency reasons. Moreover, we show that labor market distortions may also influence the amount of resources devoted to schools. Finally, it is shown that standard setting may be useful in preventing the opportunism of school principals in the use of resources.      

Profit Maximization and the Market Selection Hypothesis

We examine the proposition that competitive firms must behave as if they were maximizing profits; otherwise they would go bankrupt, or even fail to be financed in a competitive capital market. We investigate a model in which an entrepreneur raises funds for a risky enterprise on a competitive capital market, by offering a "dividend policy" based on the realized (stochastic) flow of earnings. We show that an entrepreneur who maximizes the expected sum of discounted dividends is sure to fail in finite time. On the other hand, many other behaviours yield positive expected profits and are able to attract investment funds, and yet result in a positive probability of surviving forever. As a consequence, if new firms have sufficiently diverse behaviours, then even if there is a constant stream of new entrants, after a long time practically all of the surviving firms will not have been maximizing profits.     

Movin' On Up: Interpreting The Earnings–Experience Profile

Human capital theory provides the generally accepted interpretation of the relationship between earnings and labour market experience, namely that general human capital tends to increase with experience. However, there are other plausible interpretations. Search models, for example, generally predict that more time in the labour market increases the chance of finding a better match and hence tends to be associated with higher earnings. This paper shows how a simple search model can be used to predict the amount of earnings growth that can be assigned to search with the residual being assigned to the human capital model. A substantial if not the larger part of the rise in earnings over the life-cycle in Britain can be explained by a simple search model, and virtually all the earnings gap between men and women can be explained in this way. Overall, the evidence suggests that we do need to reinterpret the returns to experience in earnings functions.     

Perfectly competitive markets as the limits of cournot markets

A perfectly competitive, partial equilibrium market for a single homogeneous good with a (bounded) continuum of infinitesimal firms is considered. Cost functions are essentially unrestricted and are allowed to vary smoothly across firms. A sequence (net) of Cournot markets (each with a finite number of firms) which converge smoothly to the perfectly competitive limit in terms of both the inverse demand functions and the distributioon of firm technologies is introduced and it is shown that all markets sufficiently far along the sequence have a Cournot equilibrium and all the Cournot equilibria converge to the perfectly competitive equilibrium of the limit market.     

The earnings of male immigrants in England: evidence from the quarterly LFS

"In this paper we estimate earnings functions for native born and foreign born white and non-white males in the English labour market, using data from the Quarterly Labour Force Survey.... Our results highlight the importance of distinguishing between native born and foreign born males when investigating the labour market experience of ethnic minorities. Furthermore, the earnings performance amongst white immigrants varies considerably."     

股票价格对内在价值的偏离度分析

本文考察了奥尔森 (Ohlson)剩余收益定价理论 ,指出了传统线性信息模型的不足 ,提出了公司存续期有限和公司存续期无限但剩余收益存续期有限情况下的内净率 (内在价值 净资产比率 )决定模型。对资本成本、净资产收益率、分红规则和剩余收益存续期对内净率的影响进行了模拟。根据上市公司近年来的业绩记录 ,通过内净率与市净率的比较发现 ,目前中国上市公司的股价大大高于其内在价值 ,其中ST类公司的股价与其内在价值偏离的更多。本文认为 ,当前股市正在经历具有体制性、结构性特点的调整 ,决定了这一调整过程的长期性。     

THE WEALTH DISTRIBUTION WITH DURABLE GOODS*

In the United States, the distribution of houses is less egalitarian than that of earnings for the total population, but these two distributions are remarkably similar for homeowners. Additionally, housing as a fraction of total wealth decreases with the level of wealth. In order to understand the different factors that account for these wealth composition patterns, we introduce illiquid houses and collateral credit in a general equilibrium model of heterogeneous agents with idiosyncratic uncertainty. A combination of very persistent shocks to earnings, frictions in the housing market, and a rental market is necessary to obtain numbers in line with the evidence.     

Does unemployment insurance crowd out home production?

In this paper, we study the interaction between self insurance and public insurance. In particular, we provide evidence on a negative correlation between unemployment insurance benefits and home production using the American Time Use Survey (ATUS) and the state-level unemployment insurance data of the U.S. The empirical results suggest that moving to a two times more generous state would decrease time spent on home production about 22% for the unemployed. Then, we pursue a quantitative assessment of this empirical finding using a dynamic competitive equilibrium model in which households do home production as well as market production. The model is able to generate the empirical facts regarding the unemployment benefits and home production. The fact that unemployment insurance benefits crowd out home production is interpreted as a substitution between the two insurance mechanisms against loss of earnings during unemployment spells.     

The optimal minimum wage with regulatory uncertainty

For two different regulatory standards, we examine the optimal minimum wage in a competitive labor market when the government is uncertain about supply and demand. Solutions are related to underlying supply and demand conditions, and to the extent of uncertainty and of rationing efficiency. With expected earnings maximization, greater uncertainty widens the range of parameter values for which a minimum wage should be set. With expected worker surplus maximization and sufficiently efficient rationing, a minimum wage should always be set. However, in both cases regulatory uncertainty may require a low minimum wage that may not bind in equilibrium.     

Market efficiency and investors' adjustments to asset valuation errors

Market participants are hypothesized to form expectations of future earnings by a process of adjustments to new earnings information while taking into account the pattern of errors in past judgements. Using an ‘adaptive expectations’ model, 140 New York Stock Exchange sample firms were classified as over- or undervalued based on earnings on announcement date versus market expectations. Comparing the risk-adjusted returns of the over- and undervalued securities for two four-year test periods, the conclusion is drawn that the securities market reacts to earnings announcements efficiently.     

Diversified growth and competition: the experience of twelve large UK firms

This paper looks at the causes and competitive consequences enterprise diversification with reference to the experience of twelve large UK firms. It is noted although the majority of these firms diversified intially for defensive reasons, continuing diversification was often undertaken to enable the firm to maintain a satisfactory rate of earnings growth. In accordance with this goal, most of the twelve firms had acquired market leaders in diverse areas. A second conclusion therefore, is that diversification can add to the total market power available to the firm. The use of this power however, appears to depend upon the management philosophy and nature of resource allocation found within the firm.     

EFFECTS OF DRUG ABUSE TREATMENT ON LEGAL AND ILLEGAL EARNINGS

Although recent research has shown that drug abuse treatment reduces drug use and criminal activity in some clients, the impact of treatment on clients' post-treatment labor market behavior is relatively unknown. This study uses data from a longitudinal survey to analyze annual legal and illegal earnings for 2,420 drug abusers. The analysis focuses on two different time intervals—one year before entering a drug abuse treatment program and one year after leaving the same program. It describes client characteristics, labor market variables, and treatment history, and estimates the effects of length of time in treatment on post-treatment earnings. The regression analysis shows that length of time in treatment had a positive (negative) and statistically significant impact on real legal (illegal) earnings following treatment for methadone and residential clients, but the magnitude was small; accounting for possible selection bias had little effect on the results. Although residential clients experienced the largest relative changes in earnings outcomes, simply comparing the direct cost of residential treatment with the benefits from improved legal earnings and lower illegal earnings suggests that additional residential treatment is not cost-beneficial.