基于个人投资者过度自信的中国股票市场定价模型

根据中国股票市场的实际情况,在假设个人投资者过度自信、风险厌恶、且是市场上的价格接受者的条件下,建立数学模型、从理论上研究个人投资者过度自信对中国股票市场定价的影响机理.研究结果表明:个人投资者过度自信程度提高将增大股票市场价格波动性和预期价格、降低股票市场价格质量和个人投资者的总体投资收益;个人投资者风险厌恶程度提高和股票平均供给量增加将降低股票市场预期价格和增加个人投资者总体投资收益.论文研究结果可以在一定程度上合理地解释中国股票市场存在的暴涨暴跌现象、相对于发达国家和地区股票市场的高溢价现象、严重偏离于中国经济发展基本面的高波动现象以及个人投资者总体投资收益比较低的现象.     

Walking on thin ice: CEOs′ internationalization decisions in underperforming firms

We build on previous research on the behavioral theory of the firm to examine the relationship between performance shortfalls and internationalization. We start from existing literature in claiming that the interplay between the aspirations of restoring performance and survival concerns leads to an inverted U-shaped relationship between a firm's performance shortfalls and its new internationalization. Our main contribution is to show that CEO duality moderates this relationship. Dual CEOs have a high control of the board that reduces oversight and increases their job security. This allows them to impose their risk preferences, thus embracing survival over aspirations. Our empirical analysis using a sample of Spanish listed firms from 1986 to 2010 provides support for our hypotheses.     

Do bettors prefer long shots because they are risk-lovers,or are they just overconfident?

This study examines whether bettors' risk preferences or overconfidence in choosing winners better explains their well documented preference for low-probability wagers. Although previous studies using racetrack data often suggest that risk-loving behavior explains long-shot preference, such data cannot distinguish between the alternative explanations. We use football betting data to make the comparison and find that overconfidence more closely fits the data. This result complements evidence of overconfidence from behavioral studies as well as stock-market models of overconfident noise traders.     

A meso-level conceptualization of CEO celebrity effectiveness

The concept of celebrity has the potential to expand traditional views of leadership by suggesting that, with the aid of the media, firms and CEOs can surpass their peers and develop marketable personas of their own. However, the research, to date, has focused on the emergence of CEO celebrity, rather than the critical question of how CEOs translate their celebrity into personal and firm-related success. The present paper addresses this issue by articulating a meso-level conceptualization focused on the role of CEO political skill in the conversion of celebrity to reputation and performance at the individual and firm levels of analysis. Implications of the proposed conceptualization and directions for future research are discussed.     

决策者过度自信视角下考虑质量控制的供应链库存策略

研究了由单个供应商和零售商组成的供应链中,零售商进行质量控制的条件下,供应链成员对市场需求的过度自信如何影响其库存管理决策和供应商的质量投资。分析了零售商管理库存、供应商管理库存和集中决策三种供应链库存管理模式下供应链成员库存和质量投资决策的博弈均衡,并通过与完全理性下均衡结果的比较探讨了过度自信对供应链成员库存决策、质量投资和利润等的冲击。研究表明,在零售商管理库存模式下,过度自信的决策者对库存量的决策受其心理预期市场需求的正向影响,而在供应商管理库存和集中决策模式下则相反。     

基于过度自信的交易量驱动因素建模研究

基于信息模型框架引入过度自信假设构建理论模型,在考虑信息结构环境的基础上建立状态依赖过度自信模型,从信息流动机制和微观机理的角度分析市场历史收益和交易量之间的关系。根据理论结果提出了私人信息冲击对交易量具有正向作用以及历史收益和交易量呈正相关的两个假说,随后基于中国证券市场的实证检验进一步验证了相关理论假说的正确性。     

基于上市公司高管人员过度自信的股利分配决策模型研究

在现有相关研究成果的基础上,在假设公司高管人员过度自信的条件下,建立恰当数学模型研究上市公司高管人员过度自信对公司股利分配决策和外部融资决策的影响机理。研究结果表明,当上市公司高管人员对未来经营环境比较乐观时,其现金股利分配水平和债务融资数量将随着其过度自信程度的提高而增多;当上市公司高管人员对未来经营环境比较悲观时,其现金股利分配水平和债务融资数量将随着其过度自信程度的提高而减少。上市公司的现金股利分配水平和债务融资数量随着公司股票价格上涨和债务融资利息率上升而减少;股权融资数量随着公司股票价格上涨和债务融资利息率上升而增加。论文研究工作在理论上扩展和深化了Deshmukh、Goe和Howe等人的相关研究成果。     

过度自信心理影响期货价格的数理模型分析

过度自信心理是金融市场中投资者的一种非理性心理,对金融产品价格有重要影响。本文结合期货市场的特征,建立了过度自信心理影响期货价格的数理模型。通过模型分析表明,过度自信心理会造成过度自信投机者和套利者合约交易量的增加,投机者和套利者的过度自信程度会影响期货均衡价格的走向,同时,过度自信会平抑由噪声交易造成的价格波动。最后,本文利用模拟的方法验证了上述结论。     

企业家生命周期理论研究现状及评述

通过搜索相关数据库和著述对国内外企业家生命周期研究的相关文献的分析,从时间和属性两个维度对企业家生命周期的含义进行了解析,将企业家生命周期的文献分为基于企业生命周期、基于CEO任期、基于企业家个体自然生命周期和基于企业家身份四类,并据此,对生命周期的阶段划分和研究方法进行了介绍和评述。指出了现有研究的不足,强调了本文的理论和实践贡献。