出口、对外直接投资与企业的异质性研究

出口和对外直接投资是一国企业进入国外市场的两种重要模式，本文通过建立一个简单的理论模型来分析企业对这两种进入模式的选择问题。本文将企业异质性引入模型分析，同时将企业的R＆D活动作为内生变量来进行研究。在理论分析的基础上，本文结合中国出口和对外直接投资发展的实际情况提出了相关政策建议。     

Heterogeneity and Share Contracting in Medical Group Practices

This paper offers an empirical analysis of the relationship between income sharing rules and physician heterogeneity in medical group practices.The economies to group formation associated with risk–sharing, mutual monitoring,and internal referral are served by sharing at least a portion of group income equally. Sharing group income equally is problematic, however, when group members differ in their contribution to group income. Member contributions to group income may differ because of differences in ability, effort, or the price of services across specialty fields. The analysis below is addressed to the question of how income sharing rules in physician groups are affected by variation in member contributions. The analysis finds evidence that heterogeneity in member contributions to group income limits the use of equal income sharing rules in multispecialty groups relative to single specialty groups, and large groups relative to small groups. Nevertheless, 65% of all groups in the survey share at least a pn of group income equally, which broadly suggests that the joint surplus enhancement from risk sharing, mutual monitoring, and internal referral are sufficient to overcome the incentive problems of such rules     

Heterogeneity in Economics

This paper argues that heterogeneity of agents’ characteristics plays a fundamental role in the economy and should do so in economic models. Three aspects are considered. Firstly the notion that assuming heterogeneity was a solution to the problem posed by the results of Sonnenschein Mantel and Debreu is considered and it is suggested that the more pragmatic approach adopted by Hildenbrand is likely to be more productive. Next the role of adaptation and evolution which necessarily involve variety or heterogeneity is examined. It is suggested that heterogeneity will persist since agents will only slowly learn to adapt and that in the meantime the environment will change. Lastly the role of heterogeneity in financial markets is examined. It is suggested that heterogeneous and varying expectations may account for many of the stylised facts which do not seem to be consistent with the standard financial markets model.“Variety is the spice of life”     

The heterogeneity of beauty premium in China: Evidence from CFPS

Using a nationwide representative sample of the Chinese population, we examine the effect of physical appearance on the hourly wage. Our theoretical framework that connects physical appearance and the hourly wage has two predictions. First, the beauty premium is larger for high-skilled workers than for low-skilled workers. Second, this statistical-based discrimination arises from the hiring manager’s belief that beauty contributes to productivity through non-cognitive skills. Empirical results confirm both predictions. Good-looking individuals earn roughly 5.4% more than the rest, and bad-looking individuals earn roughly 3.3% less than the rest. Moreover, quantile estimates show that the effect of physical appearance at the 0.75 quantile is more than twice as the one at the 0.25 quantile. Finally, social skills, communication skills, and self-confidence are three transmission channels through which physical appearance can positively affect one’s hourly wage in our sample. Our findings imply that the beauty premium is widespread in the labor market and relevant anti-discrimination regulations are needed.     

高管团队异质性、团队冲突与企业绿色绩效——差异化CEO领导风格调节下的整合分析框架

基于高阶梯队等理论，从高层管理团队异质性等要素整合分析视角切入，在探讨高层管理团队驱动企业绿色绩效作用机制的基础上，尝试构建差异化CEO领导风格调节下高管团队（TMT）异质性、团队冲突与企业绿色绩效的理论模型；通过层次回归分析、Bootstrap等方法实证检验异质性高层管理团队的作用机理和边界。研究结果显示：①TMT异质性、任务冲突能显著提升企业绿色绩效，且任务冲突在TMT异质性与企业绿色绩效的关系中起部分中介效应，而关系冲突显著降低企业绿色绩效。多元化构成的高层管理团队拥有更多差异化思想，这些观点通过高层管理团队成员不断分析整合后作用于绿色绩效，而成员间“对人不对事”的关系冲突会弱化该过程，进而对绿色绩效产生负向影响；②变革型CEO领导风格负向调节任务冲突与企业绿色绩效的关系，表明CEO适度简政放权，指导、关怀和保障高管团队成员充分表达观点非常重要。交易型CEO领导风格负向调节关系冲突与企业绿色绩效的关系，说明CEO通过奖惩激励，降低高层管理团队情绪冲突，提升团队凝聚，是推动绿色转型的重要举措。     

异质性机构投资者差异化作用于双元创新投资吗 ——基于注意力基础观与市场迎合理论双重视角

基于2011-2020年沪深A股高新技术企业样本,探究公司治理框架下异质性机构投资者对企业双元创新投资的差异化作用机理,得出如下结论：①异质性机构投资者对于双元创新投资具有差异化影响,其中,专注型机构投资者更有利于双元创新投资;②专注型机构投资者影响决策者注意力资源配置,使其更注重探索性创新投资,临时型机构投资者基于市场迎合动机作用于开发性创新投资,且当管理层业绩和外部监管压力较大时,其对开发性创新投资的迎合动机更明显;③专注型机构投资者通过监督和激励管理层、提升企业风险承担水平作用于企业双元创新投资,临时型机构投资者通过丰富投资者情绪作用于开发性创新投资未得到验证;④产业政策有助于增强专注型机构投资者对决策者注意力的影响,使其更专注于探索性创新投资,同时也有助于提高临时型机构投资者的开发性创新迎合投资动机。研究结论为理解机构投资者差异化治理角色提供了一种新视角。     

股东对创新投入的反应：股权激励异质性的信号作用

以我国2017—2019年沪深两市A股实施股权激励的上市企业为样本,基于股东视角分析股东对创新投入信息的反应,探讨这一反应在股权高度集中时的变化,并考察高管团队股权激励异质性因素向股东传递信号的机制。结果表明,创新投入与股东反应正相关;股权集中度正向调节创新投入与股东反应的关系;股权激励异质性负向调节创新投入与股东反应的关系,且该效应在民企中更加显著;经营风险是股权激励异质性负向影响股东对创新投入反应的中介变量。     

异质性与跨国公司的战略选择

新新贸易理论将公司异质性引入到国际贸易理论中,从微观层面解释了公司国际化的战略选择。但它们通常假定两国是同质的,所以公司国际化的选择仅局限于出IZl贸易和水平型直接投资。本文构建了三国模型,考察了跨国公司的三种战略选择模式。理论研究表明,生产率最高的公司选择水平型直接投资,生产率较高的公司选择出口平台直接投资,生产率较低的公司选择出口贸易,生产率最低的公司只供应国内市场。发达国家的相对工人工资水平越高、发展中国家建厂成本越小,选择出口和水平型直接投资的公司会越少,而选择出口平台的直接投资公司会越多。     

异质性企业、出口与“生产率悖论”——基于2007年中国制造业企业层面的证据

在异质性企业贸易理论提出以后,生产率就被看作是决定企业出口的重要因素,只有生产率高的企业才有能力选择出口.不过对中国企业的经验研究发现,中国出口企业的生产率的均值要低于非出口企业,即存在“生产率悖论”.本文使用2007年中国制造业企业样本,运用两种方法,其一是计算比较生产率法,其二是运用统计方法检验出口企业与非出口企业的生产率差异.为了结论的准确性,我们分行业、分地区、分企业注册类型、分企业规模检验.最后检验出口企业的生产率与其出口规模的相关性.结论认为:出口企业生产率均值在大部分情况下低于非出口企业;出口企业的生产率在很多时候显著低于非出口企业或者与非出口企业无差异;出口企业的生产率与出口规模正相关,但是在控制其它可能影响出口的因素后,则变为负相关.这些都是中国出口企业存在“生产率悖论”的证据.