企业家人力资本定价的计量模型研究

本文在国内外学者对企业家人力资本定价计量模型研究的基础上,按照期权模型计量出企业家人力资本的内在价值．利用层次分析法计算影响企业家人力资本计量因素的权重,然后根据模糊计量的数学方法衡量企业家人力资本价值发挥的效率,最后计量出企业家人力资本的实际价值。     

Ambiguous act equilibria

A game-theoretic framework that allows for explicitly randomized strategies is used to study the effect of ambiguity aversion on equilibrium outcomes. The notions of “independent strategies” as well as of “common priors” are amended to render them applicable to games in which players lack probabilistic sophistication. Within this framework the equilibrium predictions of two-player games with ambiguity-averse and with ambiguity-neutral players are observationally equivalent. This equivalence result does not extend to the case of games with more than two players. A translation of the concept of equilibrium in beliefs to the context of ambiguity aversion yields substantially different predictions – even for the case with just two players.     

Ambiguity aversion among student subjects: the role of probability interval and emotional parameters

In the literature on decision-making under uncertainty, it has been shown that decision-makers tend to prefer taking gambles with known-risk probabilities (pure risk) over equivalent gambles with ambiguous probabilities. This article contributes to the ongoing discussion in the literature on cognitive and non-cognitive covariates of ambiguity aversion. Through a series of experiments, it finds that subjects are more ambiguity-averse to prospects with wide probability intervals than to an equivalent prospect with narrow intervals, and that subjects’ inherent trust, happiness and level of optimism affect the level of ambiguity aversion.     

Entrepreneurial overconfidence and ambiguity aversion: dealing with the devil you know,than the devil you don't know

Various empirical studies find that entrepreneurs are systematically overconfident in their venture's probabilistic chances of success. Yet, entrepreneurs often face an ambiguous future that precludes them from making such probabilistic judgements. A theoretical framework based on ambiguity aversion is developed to explain an entrepreneur's overconfidence under complex and novel conditions of ambiguity. Unlike optimistic explanations, this ambiguity-averse form of overconfidence offers a non-probabilistic approach to entrepreneurial judgements of uncertainty.     

Dynamic Security Design: Convergence to Continuous Time and Asset Pricing Implications

An entrepreneur with limited liability needs to finance an infinite horizon investment project. An agency problem arises because she can divert operating cash flows before reporting them to the financiers. We first study the optimal contract in discrete time. This contract can be implemented by cash reserves, debt, and equity. The latter is split between the financiers and the entrepreneur and pays dividends when retained earnings reach a threshold. To provide appropriate incentives to the entrepreneur, the firm is downsized when it runs short of cash. We then study the continuous-time limit of the model. We prove the convergence of the discrete-time value functions and optimal contracts. Our analysis yields rich implications for the dynamics of security prices. Stock prices follow a diffusion reflected at the dividend barrier and absorbed at 0. Their volatility, as well as the leverage ratio of the firm, increase after bad performance. Stock prices and book-to-market ratios are in a non-monotonic relationship. A more severe agency problem entails lower price-earning ratios and firm liquidity and higher default risk.     

Strategic dropouts

Following Spence, this note provides an education signaling model to explain the phenomenon of gifted entrepreneurs who acquire less education than ordinary individuals. Two types of individuals, ordinary and gifted, are considered. Each one of them can either convince an investor to fund his enterprise or approach a competitive job market. The probability that an ordinary individual succeeds to establish a successful enterprise is smaller than that of a gifted individual irrespective of his education level. The probability of an ordinary individual succeeding increases with the level of education. In a separating equilibrium gifted individuals curtail their eduction to a level below that of the ordinary ones. This happens if the value of a successful enterprise per dollar investment is sufficiently large, on the one hand, but not too large to guarantee that the expected value of an enterprise run by an educated ordinary entrepreneur falls below the investment cost, on the other.     

创业企业控制权配置对创业投资机构退出方式影响研究

创业企业控制权配置是创业投资机构有效退出的重要保证,对投资机构退出方式具有重要影响。从IPO和并购这两种退出方式视角,选取CVSource数据库2000—2014年大样本数据,使用多变量回归模型,研究创业企业控制权不同配置对创业投资机构退出方式的影响。研究发现,创业企业家拥有的控制权比例与IPO退出方式显著正相关,企业家拥有的控制权越多,对其产生的期权激励作用越大,越会促使创业投资机构通过IPO方式退出;而创业投资机构拥有的控制权比例与并购退出方式存在显著正相关关系,创业投资机构拥有的控制权越多,为了尽早收回投资,保护自身利益,实现较高投资收益,其越会选择通过并购方式退出。     

Endogenous Persistent Occupations and Inequality

The paper argues that human capital is the leading force determining inequality persistence. We show that, in a context of a perfect capital market where agents inherit human capital and wealth, it is the inherited human capital level that determines agents' occupational choice and investment. The critical assumption is that the entrepreneurial activity is of increasing returns to scale. This creates a higher profile of revenue for entrepreneurs. Although every agent can choose to become an entrepreneur, and although there is no barrier of entry in entrepreneurship, only those who receive a relatively higher human capital will do so. Agents whose inherited human capital is lower than the human capital threshold, endogenously determined, are better off becoming workers. Even in the context of a perfect capital market, which allows less endowed agents to borrow and invest in education, it turns out that the agents who inherit a low level of human capital bear a greater utility cost in their education investment. So they are better off investing less in education, lending their savings, and working as workers. As a result, agents' occupational choice depends on the intergenerational transmission of human capital. In the long run, the population is polarized into the rich entrepreneurs and the poor workers, magnifying inequality persistence in human capital level and revenue.     

Optimal size, optimal timing and optimal financing of an investment

Corporate investment is an important determinant of economic well-being. The existing literature identifies optimal investment size and timing without the possibility of debt financing, as well as the effect of debt financing on investment timing without the option to choose investment size. This paper contributes to the literature by identifying the optimal size, optimal timing and optimal financing for an investment when the firm controls all three decisions (as it usually does in practice). The investment size and investment trigger are generally positively related: when investment is delayed (accelerated) it is larger (smaller) in size, thus the overall effect on investment is ambiguous. However, when tax rate or bankruptcy cost is increased, the trigger rises and size falls, hence the effect on investment is unambiguously negative. The effect of debt financing on investment depends on the amount of debt used; with the optimal amount of debt, investment is delayed relative to the no-debt case, and this delay can be economically significant; however, the investment, when eventually made, will be larger in size. Overall, it is not appropriate to ignore either the firm’s ability to choose investment size or its option to use debt financing, when modeling the investment decision.     

Life insurer performance under the bailout of distressed asset purchases

ABSTRACT

The paper develops a structure-break contingent claim model to examine how government bailout affects a life insurer’s performance (policyholder protection and insurer survival). The distressed assets purchased by the government enhance the optimal insurer interest margin, and policyholder protection. Bailout as such helps the life insurer, implying a higher likelihood of survival in particular when a financial crisis deteriorates seriously, thereby contributing to the stability of the insurance system. In addition, we suggest that low participation of the profit-sharing policy increases insurer survival. This strategic participation effect becomes more significant when the economic state of structural break volatility is increased, and thus, enhancing insurer survival and solving financial problems.     

我国创业企业研发投资经济绩效的实证研究——基于创业板上市企业的经验数据

以2009—2011年我国深圳创业板上市企业为研究对象,从会计业绩和市场业绩等角度,实证考察了其R&D投资的经济绩效。结果显示:创业企业的R&D投资整体上并未呈现出积极的经济效果;R&D投资的经济效果具有明显的行业特征,制造业创业企业的R&D投资对其经济绩效具有一定的积极影响,但该影响具有滞后性;信息技术业创业企业的R&D投资对其当期和滞后一期的经济绩效均未产生积极影响,表明信息技术业创业企业的R&D投资存在一定程度的非效率行为。     

Specific investments, holdup, and the outside option principle

According to the outside option principle the holdup problem can be solved when the non-investor has a binding outside option. The investor then becomes residual claimant, creating efficient investment incentives. This paper reports about an experiment designed to test this. We find that when the outside option is binding investment levels fall short of the efficient level, but holdup is less of a problem than predicted when the outside option is non-binding.     

股票期权与企业绩效关系的实证研究综述

股票期权作为企业家人力资本分享企业剩余索取权的典型模式在国外企业中普遍实行,国内也有近百家上市公司进行了试点。股票期权多大程度上激励了企业家人力资本,多大程度上带来了企业绩效的提高,是中外研究者实证研究一直关注的焦点问题。本文在对国内外学术界有关股票期权与企业绩效的实证研究进行综述的基础上,提出对相关问题的思考。     

The fog of fraud – Mitigating fraud by strategic ambiguity

Most insurance companies publish few data on the occurrence and detection of insurance fraud. This stands in contrast to the previous literature on costly state verification, which has shown that it is optimal to commit to an auditing strategy. The credible announcement of thoroughly auditing claim reports is a powerful deterrent. Yet, we show that uncertainty about fraud detection can be an effective strategy to deter ambiguity-averse agents from reporting false insurance claims. If, in addition, the auditing costs of the insurers are heterogeneous, it can be optimal not to commit, because committing to a fraud-detection strategy eliminates the ambiguity about auditing. Thus, strategic ambiguity can be an equilibrium outcome in the market. Even competition does not force firms to provide the relevant information. This finding is also relevant in other auditing settings, like tax enforcement.     

The refoundation of the symmetric equilibrium in Schumpeterian growth models

We provide a refoundation of the symmetric growth equilibrium characterizing the research sector of vertical R&D-driven growth models. We argue that the usual assumptions made in this class of models leave the agents indifferent as to where targeting research: hence, the problem of the allocation of R&D investment across sectors is indeterminate. By introducing an “?-contamination of confidence” in the expected distribution of R&D investment, we prove that the symmetric structure of R&D investment is the unique rational expectations equilibrium compatible with ambiguity-averse agents adopting a maxmin strategy.     

Vaccination under pessimistic expectations in clinical trials and immunization campaigns

We provide one of the first formalizations of a vaccination campaign in a decision-theoretic framework. We analyze a model where an ambiguity-averse individual must decide how much effort to invest into prevention in the context of a rampant disease. We study how ambiguity aversion affects the effort and the estimation of the vaccine efficacy in clinical trials and immunization campaigns. We find that the behaviors of individuals participating in a clinical trial differ from individuals not participating. Individuals who are more optimistic toward vaccination participate more in trials. Their behaviors and efforts are also affected. As a result, because vaccine efficacy depends on unobserved behaviors and efforts, the biological effect of the vaccine becomes difficult to evaluate. During the scale-up phase of a vaccination campaign, provided that vaccine efficacy is established, we show that vaccine hesitancy may still be rational.     

Risk, ambiguity, and state-preference theory

The state-preference framework for modeling choice under uncertainty, in which objects of choice are allocations of wealth or commodities across states of the world, is a natural one for modeling ??smooth?? ambiguity-averse preferences. It does not require reference to objective probabilities, personalistic consequences, or counterfactual acts, and it allows for state dependence of utility and unobservable background risk. The decision maker??s local revealed beliefs are encoded in her risk-neutral probabilities (her relative marginal rates of substitution between states) and her local risk preferences are encoded in the matrix of derivatives of the risk-neutral probabilities. This matrix plays a central but generally unappreciated role in the modeling of risk attitudes in the state-preference framework. It can be computed by inverting a bordered Slutsky matrix and vice versa, it generalizes the Arrow?CPratt measure for approximating local risk premia, and its structure reveals whether the decision maker??s risk preferences are ambiguity averse as well as risk-averse. Two versions of the smooth ambiguity model are analyzed??the source-dependent risk aversion model and the second-order uncertainty (KMM) model??and it is shown that in both cases, the overall premium for local uncertainty can be decomposed as the sum of a risk premium and an ambiguity premium.     

Fiscal decentralization and corporate investment: empirical evidence from China

This paper examines the effect of fiscal decentralization on levels and efficiency of corporate investment. The results indicate that as the extent of local government fiscal decentralization increases, the level of new investment by firms under their jurisdiction rises. Furthermore, fiscal decentralization has an impact on corporate investment by aggravating over-investment rather than alleviating under-investment, leading to a situation whereby fiscal decentralization is negatively associated with investment efficiency at the level of the firm. Finally, the impact of fiscal decentralization on over-investment, under-investment and investment efficiency is not different between state-owned enterprises and non-state-owned enterprises, suggesting that economic leverages are the dominant government intervention measures. The findings imply that fiscal decentralization is another determinant of firm-level investment and corporate investment efficiency, which broadens the existing literature on the economic consequence of fiscal decentralization, resulting in important implications for policy-making.     

Investment options and the business cycle

This paper extends [R. Mehra, E.C. Prescott, Recursive competitive equilibrium: The case of homogeneous households, Econometrica 48 (1980) 1365-1380] to a production economy with two capital goods. It is an RBC model in which each unit of investment requires a new idea, an ‘option.’ When options are scarce, new capital is harder to put in place and the value of old capital rises. Thus the stock market and Tobin's Q are negative indexes of intangibles. During a boom, Q rises gradually, as options are used up. Because investment represents an exercise of options, it has an intertemporal substitution tradeoff that is absent from the adjustment-cost model. Equilibrium may be efficient even without markets for knowledge; the stock market may suffice.     

The effects of abandonment options on operating leverage and investment timing

This paper examines how the presence of an abandonment option affects a firm's investment decision in general, and its operating leverage in particular. We show that the value of the abandonment option is a decreasing function of the firm's operating leverage. Upon the introduction of the abandonment option, the firm as such optimally lowers its operating leverage. We further show that there are direct and indirect effects of the abandonment option on the firm's optimal investment trigger, which act against each other. First, the ability to shut down production offers downside protection to the firm, thereby making the firm more eager to exercise the investment option. This is the negative direct effect that pushes down the investment trigger. Second, introducing the abandonment option to the firm induces the firm to lower its operating leverage, thereby making the firm more reluctant to exercise the investment option. This is the positive indirect effect that lifts up the investment trigger. We numerically verify that the overall effect of the abandonment option on the firm's optimal investment trigger is negative.