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Tariff effects on industrial performance: symmetric and asymmetric evidence from Nigeria 关税对工业绩效的影响:尼日利亚的对称和非对称证据
IF 1.3 Q3 ECONOMICS Pub Date : 2024-08-23 DOI: 10.1108/ajems-09-2023-0366
Richard O. Ojike, Marius Ikpe, Joseph Chukwudi Odionye, Sunday V. Agu

Purpose

Despite the government’s efforts to protect domestic industries from foreign competition through tariffs, the industrial sector’s contribution to GDP continued to decline in Nigeria. Based on the scenario, this study assessed the symmetric and asymmetric effects of tariffs on industrial performance in Nigeria for the period 1988–2021. Tariff was captured with a tariff rate applied to the weighted mean of all products, while industry value added as a percent of GDP was used as a proxy for industrial performance.

Design/methodology/approach

Linear and nonlinear ARDL techniques were used for the analysis.

Findings

The symmetric (linear ARDL) results revealed that tariffs have a significant positive effect on industrial performance in both the short and long term. The asymmetric (nonlinear ARDL) results showed that a long-term asymmetry exists between tariffs and industrial performance. It revealed positive effects on industrial performance for both positive and negative tariff changes, with the negative change having a greater impact.

Practical implications

Generally, the results showed that the use of tariffs to protect domestic industries in Nigeria promotes industrial performance. The implication is that the declining contribution of the industrial sector to GDP in Nigeria is not a result of the tariff policy. It shows that the government should look beyond tariff policy to enhance the industrial contribution to GDP.

Originality/value

Nigeria should exercise caution in using tariff policies to protect domestic industries to avoid retaliation from their trade partners that could reverse the positive impacts.

目的尽管政府努力通过关税保护国内工业免受外国竞争的影响,但尼日利亚工业部门对国内生产总值的贡献却持续下降。基于这种情况,本研究评估了 1988-2021 年关税对尼日利亚工业绩效的对称和非对称影响。研究采用线性和非线性 ARDL 技术进行分析。研究结果对称(线性 ARDL)结果显示,关税在短期和长期内对工业绩效都有显著的积极影响。非对称(非线性 ARDL)结果表明,关税与工业绩效之间存在长期不对称。总体而言,研究结果表明,使用关税保护尼日利亚国内产业能促进产业绩效。这意味着,尼日利亚工业部门对国内生产总值的贡献率下降并非关税政策所致。原创性/价值 尼日利亚在使用关税政策保护国内产业时应谨慎从事,以避免其贸易伙伴的报复行为扭转积极影响。
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引用次数: 0
Capital market development in emerging African countries: the pandemic problem and role of macroeconomic policies 新兴非洲国家的资本市场发展:大流行病问题和宏观经济政策的作用
IF 1.4 Q3 ECONOMICS Pub Date : 2024-08-08 DOI: 10.1108/ajems-01-2024-0046
Samson Edo
PurposeThe study investigates the role of macroeconomic policies in driving capital market development in emerging African countries where the markets are relatively active. It aims to determine the effects of these policies in pre-pandemic period vis-a-vis the post-pandemic period.Design/methodology/approachThe generalized method of moments (GMM) and auto-regressive distributed lag (ARDL) are employed in estimating the role within the period 2012Q1-2023Q3. The panel unit root test is used to ascertain the stationary status of variables, while maximum likelihood estimator is employed to determine structural stability of the model.FindingsThe empirical results reveal that fiscal and monetary policies played significant positive role in capital market development in both pre- and post-pandemic periods. On the other hand, trade policy and investment return had significant impact in pre-pandemic period which could not be sustained in post-pandemic period. It is only exchange rate policy that remained insignificant in both periods. The findings therefore suggest that capital market development slowed in the post-pandemic period due to reduced performance of macroeconomic policies. Furthermore, the unit root test reveals that all the variables satisfy empirical properties that ensure estimation results are consistent and non-spurious. The maximum likelihood estimator showed there was long-term structural break, hence short-term impacts were used in comparative analysis.Originality/valueMacroeconomic policies are fundamental to financial market development in developing countries. The role in resuscitating capital market in the post-pandemic period has yet to be adequately investigated in African countries. This study is carried out to fill this void.
目的本研究探讨了在市场相对活跃的新兴非洲国家,宏观经济政策在推动资本市场发展方面的作用。在估算 2012Q1-2023Q3 期间的作用时,采用了广义矩量法(GMM)和自回归分布滞后法(ARDL)。采用面板单位根检验确定变量的静止状态,同时采用最大似然估计法确定模型的结构稳定性。 实证结果表明,财政政策和货币政策在疫情前和疫情后都对资本市场的发展起到了显著的积极作用。另一方面,贸易政策和投资回报在大流行前有显著影响,但在大流行后则无法持续。只有汇率政策在两个时期都不显著。因此,研究结果表明,在大流行病后时期,由于宏观经济政策绩效下降,资本市场发展放缓。此外,单位根检验表明,所有变量都符合经验特性,确保了估计结果的一致性和非虚假性。最大似然估计法显示存在长期结构性中断,因此在比较分析中使用了短期影响。 原创性/价值宏观经济政策是发展中国家金融市场发展的基础。非洲国家尚未充分研究宏观经济政策在大流行病后时期振兴资本市场方面的作用。本研究旨在填补这一空白。
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引用次数: 0
Assessing the extent of exchange rate risk pricing in equity markets: emerging versus developed economies 评估股票市场汇率风险定价的程度:新兴经济体与发达经济体
IF 1.3 Q3 ECONOMICS Pub Date : 2024-08-02 DOI: 10.1108/ajems-11-2023-0436
Lumengo Bonga-Bonga, Salifya Mpoha

Purpose

This paper contributes to the literature on exchange rate exposure by assessing the extent to which exchange rate risk is priced in both African emerging and developed equity markets. It examines whether this risk leads to a premium or discount in market returns. The study uses the United States and South Africa as representatives for developed and emerging economies, respectively.

Design/methodology/approach

The paper employs two-factor and three-factor conditional CAPM approaches with a two-stage estimation process. In the first stage, time-varying risk exposures are derived using the ICAPM model estimated through rolling regression. In the second stage, the impact of these risk exposures, particularly exchange rate risk exposure, is assessed on stock market returns using Generalized Linear Model (GLM) regression.

Findings

Unlike previous studies that suggest exchange rate risk is not necessarily priced in the equity market due to hedging, this paper finds that exchange rate risk is indeed priced in both African and developed equity markets, albeit to different extents. The African equity market demands a higher premium compared to the developed equity market.

Practical implications

The findings of this paper have significant implications for policymakers, asset managers, and investors. They provide insights for making more informed decisions, implementing effective risk management strategies, and fostering a more stable and appealing investment environment.

Originality/value

To the best of our knowledge, this is the first study to evaluate the degree of exchange rate exposure in environments characterized by high currency volatility versus those with low volatility, all within the context of the conditional ICAPM model.

目的 本文通过评估汇率风险在非洲新兴和发达股票市场的定价程度,为有关汇率风险的文献做出了贡献。本文探讨了这种风险是否会导致市场回报的溢价或折价。本研究分别以美国和南非作为发达经济体和新兴经济体的代表。 本文采用双因素和三因素条件 CAPM 方法,并进行了两阶段的估算。在第一阶段,使用 ICAPM 模型通过滚动回归估算得出时变风险敞口。研究结果以往的研究表明,由于套期保值的原因,汇率风险不一定会在股票市场上被定价,但本文发现,汇率风险确实在非洲和发达国家的股票市场上被定价,尽管程度不同。与发达股票市场相比,非洲股票市场需要更高的溢价。据我们所知,这是第一项在有条件的 ICAPM 模型中评估高货币波动性环境与低波动性环境下汇率风险程度的研究。
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引用次数: 0
Fiscal policy and poverty reduction in sub-Saharan Africa: is the relationship influenced by the business cycle? 撒哈拉以南非洲的财政政策与减贫:这种关系是否受商业周期的影响?
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-29 DOI: 10.1108/ajems-11-2023-0447
Olumide O. Olaoye, Mulatu Fekadu Zerihun, Mosab I. Tabash

Purpose

The study examined the effect of fiscal policy on poverty in sub-Saharan Africa (SSA) while accounting asymmetric (captured by economic downturns) and spillover effects.

Design/methodology/approach

The study used a fixed effect (within regression) IV model to account for country-specific characteristics. The study also adopts a cross-sectional and spatial dependence-consistent model to account for the potential cross-sectional and temporal dependence in panel data modeling.

Findings

The study discovered that the effect of fiscal policy on poverty is dependent on the state of the economy. Specifically, we find that fiscal policy helps to reduce the level of poverty during an economic downturn, more than at any other time. More specifically, the findings indicate that the fiscal policy lowers the rate of poverty in SSA, following macroeconomic shocks (captured by the COVID-19 epidemic, the Global Financial Crisis, and the commodity terms of trade shocks). Our findings suggest that fiscal policy is an important policy tool to mitigate the effects of macroeconomic shocks in SSA. Further, the findings also demonstrate that there is a spillover effect of poverty in the region. This implies coordinated, constructive actions by the regional governments can help to lessen the detrimental effects of extreme poverty.

Originality/value

The study examined the effectiveness of fiscal policy to reduce poverty in the event of an economic downturn.

目的本研究探讨了财政政策对撒哈拉以南非洲(SSA)贫困问题的影响,同时考虑了非对称效应(由经济衰退反映)和溢出效应。研究还采用了横截面和空间依赖一致性模型,以考虑面板数据建模中潜在的横截面和时间依赖性。研究结果研究发现,财政政策对贫困的影响取决于经济状况。具体而言,我们发现在经济衰退时期,财政政策比其他任何时候都更有助于降低贫困水平。更具体地说,研究结果表明,在宏观经济冲击(COVID-19 疫情、全球金融危机和商品贸易条件冲击)之后,财政政策降低了撒南非洲的贫困率。我们的研究结果表明,财政政策是减轻宏观经济冲击对撒南非洲影响的重要政策工具。此外,研究结果还表明,该地区存在贫困的溢出效应。这意味着地区政府采取协调的建设性行动有助于减轻极端贫困的不利影响。
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引用次数: 0
Ownership structure and financial distress: is the tale from Sub-Saharan Africa different? 所有权结构与财务困境:撒哈拉以南非洲的故事是否与众不同?
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-23 DOI: 10.1108/ajems-03-2024-0153
Mohammed Abdulkadir, Samuel Nduati Kariuki, Peter Wang’ombe Kariuki

Purpose

The paper investigates the effect of ownership structure on the financial distress of firms listed in sub-Saharan Africa.

Design/methodology/approach

Using secondary data from 106 non-financial firms listed in 9 selected SSA countries from 2016 to 2021, the research using paired t-tests and conditional logistic regression model analysed a sample of 174 distressed observations matched with 174 non-distressed observations.

Findings

T-tests determined significant differences between distressed and non-distressed groups concerning institutional, foreign, and local ownership. Conditional logistic results established that institutional, foreign, and state ownership significantly reduce distress. However, managerial ownership does not influence financial distress while a significant positive relationship is observed between local ownership and financial distress.

Originality/value

This is the first study to investigate the influence of ownership structure, including local ownership, on financial distress in SSA, employing a unique methodology of matched design and conditional logistic regression analysis. Furthermore, the paper presents cross-country evidence from emerging frontier markets, highlighting the importance of governance frameworks in firms’ stability.

本文研究了所有权结构对撒哈拉以南非洲地区上市企业财务困境的影响。设计/方法/途径利用 2016 年至 2021 年在 9 个选定的撒哈拉以南非洲国家上市的 106 家非金融企业的二手数据,使用配对 t 检验和条件逻辑回归模型分析了 174 个困境观察值与 174 个非困境观察值的匹配样本。条件逻辑结果表明,机构、外国和国家所有权能显著减少困境。原创性/价值 这是首次采用匹配设计和条件逻辑回归分析的独特方法,研究所有权结构(包括地方所有权)对 SSA 财务困境的影响。此外,本文还提出了新兴前沿市场的跨国证据,强调了治理框架对企业稳定性的重要性。
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引用次数: 0
Mobility restrictions and firms' decisions to adopt digital technologies during the COVID-19 pandemic: across industry sectors study COVID-19 大流行期间的流动限制与企业采用数字技术的决定:跨行业研究
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-18 DOI: 10.1108/ajems-05-2023-0165
Ebaidalla M. Ebaidalla

Purpose

Despite the importance of digital technology in mitigating the adverse effects of the COVID-19 pandemic and related containment measures, limited research attention has been devoted to the impact of movement restrictions on digital business transformation in North Africa. This paper investigates the impact of mobility restrictions on firms' decisions to adopt digital technologies across sectors, emphasizing the challenges associated with accessing both customers and suppliers.

Design/methodology/approach

The study uses the ERF COVID-19 MENA Monitor Enterprise survey (2021), covering 3,978 enterprises across three North African countries: Egypt, Tunisia and Morocco. The analysis employed the linear probability model (LPM) to account for observable and unobservable heterogeneity across countries and over time.

Findings

The results indicated that mobility restrictions have a positive impact on firms' decisions to adopt digital solutions during the COVID-19 pandemic across most industry sectors. Notably, firms operating in manufacturing, trade, retail and services demonstrated a higher likelihood to adopt technologies. However, the analysis revealed some variations in the impact of mobility restrictions across sectors and countries.

Originality/value

This study has several contributions. First, this study is unique in utilizing firm-level data gathered during the COVID-19 pandemic to investigate the impact of mobility restrictions on firms' decisions to adopt digital solutions. Second, the study examines the influence of mobility restrictions on digitalization across industry sectors, to the best of our knowledge, no empirical study has specifically focused on the digital business transformation across sectors.

目的尽管数字技术在减轻 COVID-19 大流行及相关遏制措施的不利影响方面具有重要作用,但有关北非流动限制对数字业务转型的影响的研究却十分有限。本文调查了流动限制对各行业企业采用数字技术决策的影响,强调了与获取客户和供应商相关的挑战:埃及、突尼斯和摩洛哥。研究结果表明,在 COVID-19 大流行期间,流动性限制对大多数行业部门的企业采用数字化解决方案的决策产生了积极影响。值得注意的是,制造业、贸易、零售业和服务业的企业采用技术的可能性更高。不过,分析显示,流动限制对不同行业和国家的影响存在一些差异。首先,本研究利用在 COVID-19 大流行期间收集的企业级数据来调查流动限制对企业决定采用数字解决方案的影响,这是独一无二的。其次,本研究探讨了流动性限制对各行业数字化的影响,据我们所知,还没有实证研究专门关注各行业的数字化业务转型。
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引用次数: 0
Domestic debt, public spending and economic growth in Nigeria: a mediation analysis 尼日利亚的内债、公共开支和经济增长:中介分析
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-18 DOI: 10.1108/ajems-10-2023-0400
Nnachi Egwu Onuoha

Purpose

This study is aimed at interrogating the mediation role of public spending in domestic debt and economic growth nexus, drawing on debt overhang theory and the Keynesian view.

Design/methodology/approach

The study deployed a time series data (from 1981 to 2020) set drawn from the 2021 Central Bank of Nigeria (CBN) statistical bulletin. The mediation effect of public spending was tested by performing structural equation modeling after pre-estimation Augmented Dickey-Fuller unit root test.

Findings

Overall, the study outcomes indicate that domestic debt and public spending have significant positive effects on economic growth. Additionally, the study finds public spending to partially mediate domestic debt and economic growth nexus.

Practical implications

This study's outcomes provide insights that will enable fiscal policymakers to focus on internal borrowing, keep it under strict control to avert crowding out effects and improve public spending on productive projects to stimulate economic growth.

Originality/value

As the first study to question the mediation effect of public spending in domestic debt-economic growth relationship, it deepens and extends extant literature on domestic debt-economic growth nexus.

本研究旨在借鉴债务悬置理论和凯恩斯主义观点,探讨公共支出在国内债务和经济增长关系中的中介作用。研究采用的时间序列数据(1981 年至 2020 年)来自尼日利亚中央银行(CBN)2021 年的统计公报。研究结果总体上表明,国内债务和公共支出对经济增长有显著的积极影响。此外,研究还发现公共支出对国内债务与经济增长之间的关系起到了部分中介作用。本研究的结果提供了一些见解,有助于财政政策制定者关注内部借贷,严格控制内部借贷以避免挤出效应,并改善生产性项目的公共支出以刺激经济增长。
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引用次数: 0
Determinants of exchange rate threshold effect on economic growth. Evidence from Ghana 汇率阈值效应对经济增长的决定因素。加纳的证据
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-05 DOI: 10.1108/ajems-10-2023-0383
David Mensah Awadzie, Edward Attah-Botchwey, Bright Gabriel Mawudor

Purpose

The exchange rate is an important driver of a country’s economic growth, influencing trade, investment, inflation, and employment. This study’s main objective was to investigate the threshold effects of exchange rates on economic growth.

Design/methodology/approach

In this research, innovative endogenous threshold autoregressive (TAR) models introduced by Hansen (2000) are employed for estimation and inference. The dataset comprises secondary annual time series data from Ghana, covering thirty-one years from 1990 to 2021. Economic growth is represented by GDPPC, with the growth exchange rate serving as the crucial threshold variable.

Findings

The finding suggests a single exchange rate threshold for Ghana, indicating a nonlinear relationship with economic growth. However, above 8.97%, the exchange rate considerably slows growth, harming the economy. The exchange rate negatively influences growth in both low and high-exchange-rate regimes, but it is insignificant in the high regime. In addition, inflation has a significant negative influence on growth in the low regime but a positive impact on the high regime. In contrast, interest rates positively impact growth in both regimes, though not as significantly in the high regime.

Practical implications

The findings from this study offer valuable insights to the Ghanaian government and policymakers as they consider choosing an exchange rate target that helps minimise the negative impact of a high exchange rate to promote economic growth.

Originality/value

This paper is remarkable for being one of the few studies that have explored the relationship between exchange rates and economic growth, exploring the threshold effect.

目的汇率是一国经济增长的重要驱动力,影响着贸易、投资、通货膨胀和就业。本研究的主要目的是探讨汇率对经济增长的门槛效应。本研究采用 Hansen(2000 年)提出的创新性内生门槛自回归(TAR)模型进行估计和推断。数据集包括加纳从 1990 年到 2021 年 31 年的二级年度时间序列数据。经济增长由 GDPPC 表示,增长汇率作为关键的临界变量。然而,如果汇率超过 8.97%,经济增长就会明显放缓,从而损害经济。在低汇率制度和高汇率制度下,汇率都会对经济增长产生负面影响,但在高汇率制度下影响并不显著。此外,通货膨胀对低汇率制度下的经济增长有显著的负面影响,但对高汇率制度下的经济增长有正面影响。相比之下,利率对两种制度下的经济增长都有积极影响,但在高汇率制度下影响并不显著。 本研究的结论为加纳政府和政策制定者提供了宝贵的见解,因为他们正在考虑选择一个汇率目标,以帮助最大限度地减少高汇率的负面影响,从而促进经济增长。
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引用次数: 0
Sustainable economic development in Kenya: influence of diaspora remittances, foreign direct investment and imports 肯尼亚的可持续经济发展:侨汇、外国直接投资和进口的影响
IF 1.3 Q3 ECONOMICS Pub Date : 2024-07-05 DOI: 10.1108/ajems-01-2024-0059
Noah Cheruiyot Mutai, Lawrence Ibeh, Manh Cuong Nguyen, Joyce Wangui Kiarie, Cynthia Ikamari

Purpose

Many African countries struggle to sustain steady economic growth. Specific macro-economic factors can influence a country’s economic growth. We investigated the trend and influence of diaspora remittances, foreign direct investment (FDI) and imports on Kenya’s economic growth.

Design/methodology/approach

We used panel data from the World Bank Indicators database from 1973 to 2021. By utilising the autoregressive distributed lag (ARDL) model for econometric analysis and performing computations using R software, we provide valuable insights into both short-term and long-term dynamics.

Findings

In the short term, we establish a non-significant negative impact of FDI and imports on economic growth, contrasting with the positive influence of diaspora remittances. However, in the long term, all three variables – FDI, imports and remittances – emerge as significant determinants of economic growth.

Research limitations/implications

The availability and quality of data on diaspora remittances, FDI inflows, imports and economic indicators may vary, leading to potential data limitations, biases or gaps in the analysis. External factors such as global economic trends, political stability, COVID-19, regulatory changes and natural disasters may influence the study’s findings and should be considered when interpreting the results.

Practical implications

In the short term, the non-significant negative impact of FDI and imports on economic growth suggests that policies promoting FDI and imports may not yield immediate economic growth benefits. Policymakers might need to reassess the effectiveness of current strategies aimed at attracting FDI and managing imports in the short term. The positive influence of diaspora remittances on economic growth underscores the significance of these inflows in supporting economic development. Governments may need to focus on policies that encourage remittance inflows, such as facilitating remittance channels and providing incentives for diaspora investment in the home country. The shift in significance from non-significant in the short term to significant in the long term for FDI, imports and remittances highlights the importance of considering long-term effects in economic planning. Policymakers should adopt strategies that consider the cumulative impact of these factors over time.

Social implications

Diaspora remittances often play a crucial role in alleviating poverty and reducing inequality by providing direct financial support to families. Recognising the importance of remittances in improving living standards, policymakers should ensure that policies support the effective utilisation of remittance inflows to address poverty and inequality challenges.

Originality/value

目的 许多非洲国家都在努力维持稳定的经济增长。特定的宏观经济因素会影响一个国家的经济增长。我们研究了侨汇、外国直接投资(FDI)和进口对肯尼亚经济增长的趋势和影响。通过利用自回归分布滞后(ARDL)模型进行计量经济学分析,并使用 R 软件进行计算,我们对短期和长期动态提供了有价值的见解。在短期内,我们确定了外国直接投资和进口对经济增长的非显著负面影响,与侨汇的积极影响形成鲜明对比。然而,从长期来看,所有三个变量--外国直接投资、进口和侨汇--都是经济增长的重要决定因素。研究局限/影响有关侨汇、外国直接投资流入量、进口和经济指标的数据的可用性和质量可能各不相同,从而导致分析中潜在的数据局限、偏差或差距。全球经济趋势、政治稳定、COVID-19、监管变化和自然灾害等外部因素可能会影响研究结果,在解释结果时应加以考虑。 实际意义在短期内,外国直接投资和进口对经济增长的负面影响并不显著,这表明促进外国直接投资和进口的政策可能不会立即产生经济增长效益。政策制定者可能需要重新评估当前旨在吸引外国直接投资和管理进口的短期战略的有效性。侨汇对经济增长的积极影响凸显了这些资金流入在支持经济发展方面的重要性。各国政府可能需要把重点放在鼓励汇款流入的政策上,如促进汇款渠道和为侨民在母国投资提供激励措施。外国直接投资、进口和汇款的重要性从短期的非显著性转变为长期的显著性,这突显了在经济规划中考虑长期影响的重要性。政策制定者应采取考虑这些因素长期累积影响的战略。 社会影响散居国外者的汇款通过向家庭提供直接经济支持,往往在减轻贫困和减少不平等方面发挥着至关重要的作用。认识到汇款在提高生活水平方面的重要性,政策制定者应确保政策支持有效利用汇款流入,以应对贫困和不平等挑战。原创性/价值因此,我们通过研究研究期间侨汇、外国直接投资、进口和经济增长之间的相互作用,贡献了原创性见解。对短期和长期影响的重视,为理解它们在塑造肯尼亚经济增长轨迹中的作用提供了新的视角。
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引用次数: 0
Bayesian inference for inflation volatility modeling in Ghana 加纳通货膨胀波动模型的贝叶斯推论
IF 1.3 Q3 ECONOMICS Pub Date : 2024-06-20 DOI: 10.1108/ajems-04-2023-0132
Carl Hope Korkpoe, Ferdinand Ahiakpor, Edward Nii Amar Amarteifio

Purpose

The purpose of this paper is to emphasize the risks involved in modeling inflation volatility in the context of macroeconomic policy. For countries like Ghana that are always battling economic problems, accurate models are necessary in any modeling endeavor. We estimate volatility taking into account the heteroscedasticity of the model parameters.

Design/methodology/approach

The estimations considered the quasi-maximum likelihood-based GARCH, stochastic and Bayesian inference models in estimating the parameters of the inflation volatility.

Findings

A comparison of the stochastic volatility and Bayesian inference models reveals that the latter is better at tracking the evolution of month-on-month inflation volatility, thus following closely the data during the period under review.

Research limitations/implications

The paper looks at the effect of parameter uncertainty of inflation volatility alone while considering the effects of other key variables like interest and exchange rates that affect inflation.

Practical implications

Economists have battled with accurate modeling and tracking of inflation volatility in Ghana. Where the data is not well-behaved, for example, in developing economies, the stochastic nature of the parameter estimates should be incorporated in the model estimation.

Social implications

Estimating the parameters of inflation volatility models is not enough in a perpetually gyrating economy. The risks of these parameters are needed to completely describe the evolution of volatility especially in developing economies like Ghana.

Originality/value

This work is one of the first to draw the attention of policymakers in Ghana towards the nature of inflation data generated in the economy and the appropriate model for capturing the uncertainty of the model parameters.

本文旨在强调在宏观经济政策背景下建立通货膨胀波动模型所涉及的风险。对于像加纳这样一直与经济问题作斗争的国家来说,任何建模工作都需要精确的模型。我们在估算波动率时考虑到了模型参数的异方差性。研究结果对随机波动率模型和贝叶斯推理模型进行比较后发现,后者能更好地跟踪月度通胀波动率的变化,从而密切跟踪报告期内的数据。研究局限性/意义本文仅研究了通货膨胀波动参数不确定性的影响,同时考虑了利率和汇率等影响通货膨胀的其他关键变量的影响。社会影响在经济持续波动的情况下,仅仅估计通货膨胀波动模型的参数是不够的。特别是在像加纳这样的发展中经济体中,需要这些参数的风险来完整描述波动的演变过程。
{"title":"Bayesian inference for inflation volatility modeling in Ghana","authors":"Carl Hope Korkpoe, Ferdinand Ahiakpor, Edward Nii Amar Amarteifio","doi":"10.1108/ajems-04-2023-0132","DOIUrl":"https://doi.org/10.1108/ajems-04-2023-0132","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this paper is to emphasize the risks involved in modeling inflation volatility in the context of macroeconomic policy. For countries like Ghana that are always battling economic problems, accurate models are necessary in any modeling endeavor. We estimate volatility taking into account the heteroscedasticity of the model parameters.</p><!--/ Abstract__block -->\u0000<h3>Design/methodology/approach</h3>\u0000<p>The estimations considered the quasi-maximum likelihood-based GARCH, stochastic and Bayesian inference models in estimating the parameters of the inflation volatility.</p><!--/ Abstract__block -->\u0000<h3>Findings</h3>\u0000<p>A comparison of the stochastic volatility and Bayesian inference models reveals that the latter is better at tracking the evolution of month-on-month inflation volatility, thus following closely the data during the period under review.</p><!--/ Abstract__block -->\u0000<h3>Research limitations/implications</h3>\u0000<p>The paper looks at the effect of parameter uncertainty of inflation volatility alone while considering the effects of other key variables like interest and exchange rates that affect inflation.</p><!--/ Abstract__block -->\u0000<h3>Practical implications</h3>\u0000<p>Economists have battled with accurate modeling and tracking of inflation volatility in Ghana. Where the data is not well-behaved, for example, in developing economies, the stochastic nature of the parameter estimates should be incorporated in the model estimation.</p><!--/ Abstract__block -->\u0000<h3>Social implications</h3>\u0000<p>Estimating the parameters of inflation volatility models is not enough in a perpetually gyrating economy. The risks of these parameters are needed to completely describe the evolution of volatility especially in developing economies like Ghana.</p><!--/ Abstract__block -->\u0000<h3>Originality/value</h3>\u0000<p>This work is one of the first to draw the attention of policymakers in Ghana towards the nature of inflation data generated in the economy and the appropriate model for capturing the uncertainty of the model parameters.</p><!--/ Abstract__block -->","PeriodicalId":46031,"journal":{"name":"African Journal of Economic and Management Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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African Journal of Economic and Management Studies
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