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1.
消费函数理论主要假说述评   总被引:10,自引:0,他引:10  
消费与收入之间的具体关系是消费函数理论的中心内容,从凯恩斯提出绝对收入假说到现在的半个多世纪来,消费函数理论研究进展主要从三个方面突破:一是对消费者的假设上,经历了短视、非理性假设,到完全理性再到有限理性的认知;二是在分析影响消费的因素时,渐次加入预期收入及其不确定的研究;三是研究方法从“心理定律”的推演到大量的实证研究,并运用了现代计量分析工具。  相似文献   

2.
传统金融理论假设交易者是理性的,但是我们日常的观察以及大量心理学的证据都表明人们会受到各种偏差的影响而偏离了理性。虽然传统的金融学家也认同现实中作为决策者的交易者并不是完全理性的,但是他们认为市场进化(market evolution)或者市场选择(market selection)过程会最终把那些非理性交易者排斥出市场,同时只有理性交易者才能  相似文献   

3.
分形市场假说在沪深股票市场中的实证研究   总被引:19,自引:0,他引:19  
首先介绍并分析了有效市场假说的不足,指出不切实际的简化和线性思维范式是导致有效市场假说倍受批评的原因。其次介绍分形市场假说,很好地解决了有效市场假说暴露出的问题,使得对市场的描述更切合实际。最后在沪探股票市场中对分形市场假说进行实证检验,得出沪深两市股指收益率具有时间尺度不变性和大于0.5的Hurst指数,分别为0.69和0.64。表明分形市场假说在两地股市中成立。  相似文献   

4.
从演化角度分析组织行为是目前经济学研究的热点。本文以生物进化为基础,探讨市场的构成和市场选择的内涵,提出了市场选择的机制包括效率甄别、互惠互利、产业选择、密度制约和产品对策影响,用动态分析的方法对市场理论进行了有益探索。  相似文献   

5.
石建辉 《生产力研究》2011,(4):25-26,38
有效市场假说面临着很多困难:市场激励不足;市场异象相悖与之相悖;难以证伪。行为金融学指出市场异象源于人类的行为偏差,但是难以给出一个统一的框架。Lo(2004;2005)借鉴进化论思想提出的适应性市场假说可作沟通有效市场假说和行为金融学的桥梁。文章认为,AMH堪比投资领域的"哥白尼革命",对投资的意义体现在:对大量出现的市场异象提供统一的解释;有助于设计有效的投资策略。  相似文献   

6.
区域主导产业选择方法研究述评   总被引:7,自引:2,他引:7  
通过整理已有国内外区域主导产业选择方法,针对区域主导产业选择基准的属性要求,本文得出区域主导产业的选择方法的原则,即所采用的方法应该满足综合评价的三个层次属性:(1)层次性,即每个评价指标转化成无量纲的评价值,用它来进行决策排序;(2)权重相对的客观性。尽量排除主观因素的影响;(3)基准的可筛选或简约性。在众多主导产业选择基准中识别反映选择主体产业特性、发展阶段、区域优势的个性基准,用于支撑最终决策排序。只有符合这些原则的方法选择出来的主导产业,才更加符合区域经济发展的实际要求。  相似文献   

7.
李新  刘朝明 《生产力研究》2008,(15):112-113
文章从产业经济学和区域经济学角度对主导产业选择的研究成果进行了梳理,并通过分析我国区域主导产业研究状况,找出了我国的特殊经济区域——高新区主导产业选择研究存在的不足之处:(1)对高新区主导产业的理论研究明显不足;(2)对高新区主导产业的内涵尚无明确定义,以及缺少符合高新区功能和产业特色的选择基准及相应的评价指标体系;(3)缺少高新区主导产业选择的定量评价模型。  相似文献   

8.
梁立俊 《经济评论》2004,130(6):83-85
传统金融学对信息和噪音的定义边界不清晰 ,为了逻辑上的一致性 ,传统金融学策略性地使用信息和噪音的定义 ,使一部分“噪音”进入信息集。行为金融学对信息和噪音的内涵进行了廓清 ,使之回归本意。行为金融学通过证实噪音交易者的社会化和噪音交易者风险等 ,对传统金融学的有效市场理论提出质疑。传统金融学和行为金融学之间争论颇多 ,但实质上 ,前者更接近真理 ,后者更接近真实 ,这两种理论之间存在较强的互补性。  相似文献   

9.
李薇薇 《经济视角》2013,(9):19-20,78
有效市场假说是现代金融学理论研究的核心和基础,它是建立在理性人基础上的完全竞争模型,它假设资本交易是无摩擦的,并且市场信息是完全对称和充分流动的,任何对价格有影响的因素都会迅速地反映到价格中来。它将市场按照信息对称的程度分为三种形态:弱势有效、强势有效和半强势有效。本文将在立足于有效市场假说基本理论的基础上,着眼于有效市场假说的缺陷,探讨和延伸有效市场假说与其他理论研究的关系。  相似文献   

10.
本文借用演化经济学的生物隐喻的方法,在分析了市场选择的内涵、作用以及在市场的“自然选择”下企业的适应性学习行为等基础上,建立了一个新的分析企业成长框架。  相似文献   

11.
We ask if natural selection in markets favors profit-maximizing firms and, if so, is there a difference between the predictions of models which assume all firms are profit maximizers and the predictions of models which explicitly take account of population dynamics in the market. We show that market selection favors profit maximizing firms, but we also show that the long-run behavior of evolutionary market models is nonetheless not consistent with equilibrium models based on the profit-maximization hypothesis. Dynamic equilibrium paths with market selection are not Pareto optimal, nor even asymptotically optimal. The discrepancy arises because the dynamics created by firm evolution causes prices to vary over time and the resulting dynamical system need not have stable steady states.  相似文献   

12.
    
ABSTRACT

This paper uses the example of the history of the efficient market hypothesis (EMH) and citation analysis in order to investigate some differences between qualitative history and a quantitative history. The history of the EMH provides a telling example of the way quantitative analyses can supply different perspectives on the qualitative history of this hypothesis or complement it. For instance, since the EMH was proposed, several criticisms emerged. In addition, the definition and the scope of this hypothesis have been modified several times. Although the qualitative history of the EMH refers to these criticisms and these alternative definitions and scopes, qualitative tools cannot provide a clear measure of the impact of these criticisms and these modifications among economists. By studying the dissemination of the EMH, its major criticisms, and the answers economists provided, citation analysis sheds a different light on the history of the EMH.  相似文献   

13.
分形及其在证券市场上的应用   总被引:8,自引:0,他引:8  
林勇 《经济问题》2001,(8):44-46
比较了有效市场假设与分形市场假设,也即比较了证券市场的线性与非线性的观点,同时还对沪深股指通过比较周收益率与日收益率的分布发现指数的分形特征。  相似文献   

14.
We propose a heterogeneous agent model (HAM) of four groups of investors with Markov chain regime-dependent beliefs for the housing market. Within the Markov switching framework, we take into account how heterogeneous investors shift their trading behaviour in response to changes in housing market conditions. The model is estimated and compared with the benchmark rational expectation models using the Australian housing market data from 1982Q1 to 2013Q2. We find evidence of within- and between-group heterogeneity in the Australian housing market. We show that HAM with Markov switching beliefs provides a better in-sample estimation efficiency and outperforms the conventional rational expectation models in terms of out-of-sample prediction.  相似文献   

15.
保险产业市场结构和市场绩效的关系研究   总被引:2,自引:0,他引:2  
陈璐 《经济经纬》2006,34(6):32-34
对于市场结构和市场绩效的关系问题,理论界存在两个较为权威的假说,即市场力量假说和效率结构假说。笔者通过实证分析检验这两个假说在我国保险市场中的适用性,认为在我国保险市场存在传统的市场结构—市场行为—市场绩效假说,保险市场可以通过增加有效率企业的数量,引入竞争机制,最终通过市场自然选择的过程,形成少数新的规模大并能够具有市场力量的保险公司,从而提高保险业的绩效水平。  相似文献   

16.
    
Nakil Sung 《Applied economics》2013,45(25):3037-3048
This study analyses the progress of market concentration in OECD member states’ mobile telecommunications markets and evaluates the relationship between market concentration and performance. Using annual panel data from 24 OECD member states for the 1998–2011 period, the study estimates regression equations for market concentration, mobile prices and profits. The empirical results indicate that the more concentrated the mobile market, the higher the prices and profits, providing support for the market power hypothesis. If this hypothesis holds, then market concentration can be a useful indicator of market performance. On the other hand, the applicability of the hypothesis is unclear for the second half of the sample period. The results provide evidence that regulatory policies influence the structure and performance of mobile markets.  相似文献   

17.
2002年全球金融板块呈现调整特征:一是国际股票市场全线大跌,但其他市场却有不同程度的“好”行情;二是股票、风险投资等直接融资受挫,银行信贷等间接融资重拾风光;三是美元强货币走跌,欧元等弱货币走强;四是美国等强势金融体遭困,东南亚等弱势金融体逞强。与此相对应,中国的对外金融呈现一派繁荣景象,以开放促改革的局面初步形成。  相似文献   

18.
Informal finance exists extensively and has been playing an important role in small- and medium-sized enterprise (SME) financing in developing economies. This paper tries to rationalize the extensiveness of informal finance. SME financing suffers more serious information asymmetry to the extent that most SMEs are more opaque and can only provide less collateral. Informal lenders have an advantage over formal financial institutions in collecting “soft information” about SME borrowers. This paper establishes a model including formal and informal lenders and high- and low-risk borrowers with or without sufficient collateral and shows that the credit market in which informal finance is eliminated will allocate funds in some inefficient way, and the efficiency of allocating credit funds can be improved once informal finance is allowed to coexist with formal finance. Translated from Economic Research Journal, 2005, 7 (in Chinese)  相似文献   

19.
处于21世纪经济运行轴心的中国资本市场   总被引:4,自引:0,他引:4  
现代科技与现代金融是推动21世纪经济增长的两个巨轮,发达的资本市场是现代金融的心脏和特征性标志,我们应从国家战略的高度和经济发展的逻辑角度来认识中国资本市场的发展问题。  相似文献   

20.
In this paper we document that the hypothesis that the forward exchange rate discount is an unbiased predictor of future currency depreciation holds in periods when the forward US dollar is quoted at a premium against the Japanese yen and the Deutschmark, but fails when it is quoted at a discount for the post-Bretton Woods floating exchange rate era. Moreover, the observed asymmetry is statistically significant. This puzzling result remains to be explained.  相似文献   

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