Recent Evidence on the Oil Price Shocks on Gulf Cooperation Council Stock Markets

The recent plunge in the price of oil affected many countries, especially major oil producers and exporters, such as the Gulf Cooperation Council (GCC), which accounts for half of the global oil reserves. This paper examines the impact of oil price changes on GCC stock markets, including Bahrain, Kuwait, Oman, Qatar, Kingdom of Saudi Arabia, and United Arab Emirates over a 10-year period, 2005–2015. We examine the direction of influence and influence absorption through Granger causality and impulse response function. The results are important for portfolio management at the international level, and provide insights for government and regulatory authorities in times of oil price change. Additionally, the evidence suggests the need for more economic diversification at the country level in the GCC region to mitigate high volatility in the event of oil shocks.     

基于VAR模型的上海股市价量动态关系的实证研究

文章首先对上证综指的收益率和交易量数据序列建立VAR模型,然后借助脉冲响应分析、方差分解以及Granger因果检验方法进行了实证研究.结果表明:上海股市中的价量之间存在双向Granger线性因果关系,并且二者之间的动态关系是非对称的,收益率对交易量的冲击大于交易量对收益率的冲击.     

The heterogeneous behaviour of the inflation hedging property of cocoa

In this paper, we examine distinctly the inflation hedging potential of cocoa in net cocoa-exporting and net cocoa-importing countries. The choice of cocoa is motivated by its significance as a key ingredient in the production of chocolate which is largely consumed at every household and therefore serves as a major source of revenue to cocoa investors in exporting and importing countries. Based on our preliminary analyses including panel causality tests, we formulate both panel threshold regression model and panel smooth transition regression model in order to account for any inherent nonlinearity, time-variation and structural breaks in the inflation-cocoa returns nexus. We find that cocoa offers better inflation hedging characteristics in cocoa importing countries than their cocoa exporting counterparts. While the results are robust to alternative frequency and market size, we are able to establish that ignoring the presence of threshold effects may lead to wrong conclusions.     

CHILDREN AND THEIR PARENTS: A REVIEW OF FERTILITY AND CAUSALITY

Childbearing decisions are not made in isolation. They are taken in concert with decisions regarding work, marriage, health investments and stocks, as well as many other observable and non‐observable considerations. Drawing causal inferences regarding the effect of additional children on family outcomes is complicated by these endogenous factors. This paper lays out the issues involved in estimating the effect of additional child births on family outcomes, and the assumptions underlying the range of estimators and methodologies proposed in the economic literature. The common pitfalls of these estimators are discussed, as well as their potential to bias our interpretation of the effect additional births have on children and parents, both in the existing literature and in future work in the face of changing patterns of childbearing and child‐rearing.     

Hong Kong's aviation and tourism growth - An empirical investigation

This study investigates the critical link between aviation and tourism growth in Hong Kong, with a focus on the identification of causal relationships between scheduled airline seat capacity and visitor arrivals. This is achieved through the cointegration analysis and Granger-causality test, using monthly data collected from Hong Kong's top 17 tourist source markets during 2008–2018. Our analysis finds clear evidence of an overall two-way causal relationship between airline scheduled capacity and tourist arrivals. The positive externalities between the two crucial sectors to the Hong Kong economy call for coordinated planning and policy design in the tourism and aviation sectors, and justify continued government support. On the other hand, market-specific features are evident in selected markets. Such heterogeneity is likely due to airline network effect and regulation in the international market. Therefore, direct subsidy is not always an efficient support measure. A combination of liberalization policy and industry supports are preferred in views of the benefits to be achieved for the two sectors and the Hong Kong economy.     

ICT investment and GDP growth: Causality analysis for the case of Korea

This study investigated how investment in the industry of Information, Communication and Technology (ICT) has been interlocked with the GDP growth of South Korea. Based on seasonally-adjusted quarterly time-series data for the period between 1999 and 2016 available from the Korea Statistical Information Service, a Vector Error Correction model was applied for the analysis. The results revealed that ICT investment and GDP growth affected bi-directionally except for the short-run case in which only ICT investment affected GDP growth. The results explain that ICT investment plays an important role in the economic growth of South Korea in the long term; at the same time, investment size in the ICT industry increases as the economy grows. Without controlling any other factors, we found GDP increases by 0.4% when ICT investment increases by 1%. However, in the short term, only ICT leads to GDP growth. Therefore, the recent stagnation in ICT investment experienced in South Korea could negatively affect the economic growth of Korea in the short run, and hence, in the long-run, if it should become prolonged. The ICT investment strategy revealed from this study is especially useful to policy-makers who plan the economic growth in South Korea and other ICT-advanced countries because promoting ICT utilization across all sectors requires putting legal and policy mechanisms in place.     

Switches in price discovery: Are U.S. traders more qualified in making valuations?

The literature on the price discovery of dually listed stocks postulates that domestic markets generally dominate in driving changes in prices and make a strong contribution to price discovery. In this study, we provide evidence challenging this view. We analyze a case of two dually listed mobile communication firms that experienced a more than 80% loss in their value in response to a regulatory decision to allow other new operators to enter the communication market in the domestic market. We find that during the negative momentum period, price discovery switched from the domestic to the foreign market, making the NYSE more important in terms of price discovery. Our findings suggest that, regardless of the origin of the news, such dramatic shocks that carry long-term implications are processed differently, with U.S. traders, rather than the domestic ones, being the main information processors.     

农村金融生态环境与金融效率指标体系构建及互动分析

分别建立农村金融生态环境和金融效率评价指标体系,并从理论上分析二者的互动机制。然后运用Granger因果检验法,对1985-2008年农村金融生态环境和金融效率关系进行实证分析,结果显示二者存在Granger因果关系,建议通过优化农村金融生态环境来促进金融效率提高,并带来自身进一步改善。     

Short Term External Debt and Economic Growth—Granger Causality: Evidence from Latin America and the Caribbean

In this paper the direction of the causality relationship between economic growth and short-term external debt was investigated for 27 Latin American and Caribbean countries over the period 1970–2003. The empirical results suggest the existence of bidirectional causality relationships between the two variables for several countries, which means that the performance of both variables is interrelated. The main finding is that in the short- and long- runs Granger causality from economic growth to short-term external debt is present in 13 Latin American and Caribbean countries. With the evidence suggesting, in the majority of estimated cases, economic growth Granger caused short-term external debt, short-term policy decisions related to capacity absorption enhancement should be encouraged in Latin America and the Caribbean. Further work in this regard is encouraged in the form of panel studies or specific individual case studies inclusive of foreign trade linkage parameters to capture the potential effects of omitted variables.

我国居民收入与资产价格关系的实证研究

居民收入与资产价格之间到底存在怎样的关系是理论界广泛关注的问题。在中国当前特殊情况下,房地产和股票分别是两大具有代表性的实体资产与虚拟资产。本文基于较大期限跨度的数据,使用Jo-hansen协整检验和Granger因果关系检验方法,对居民收入和资产价格之间的关系进行实证研究。结论表明,居民收入提高不会导致实体资产价格上升,但会对虚拟资产价格产生一定的影响。基于此,现阶段国内要稳步发展房地产市场和股票市场,引导投资者合理投资,在提高居民收入时要注意促使居民扩大消费而不是追加投资。