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The paper aims to examine the asymmetric response of three major altcoins to shocks in six African fiat currencies in a time-frequency space.

Data are for the period 10th August 2015 to 2nd February 2019 at a daily frequency. The authors capture the time and frequency information in the return series of the currencies using the ensemble empirical mode decomposition. The authors implemented quantile regression and quantile-in-quantile regression on the decomposed series to test the response of altcoins to both positive and negative shocks in the fiat currencies across time to see if the altcoins are viable alternatives to African fiat currencies.

The outcome of the study suggests that altcoins behave differently from African fiat currencies and are viable alternative digital currencies and good hedges for African fiat currencies from the medium-term.

Policymakers in Africa and across the globe can follow this paper to mitigate currency crises by adopting altcoins as alternatives to fiat currencies. Forex traders can also mitigate trade risk by using altcoins to hedge dollar/African fiat currency exchange rate risk.

The research was conducted by the authors and has not been published in any journal.

This study investigates the time-varying volatility spillover connectedness among seven major cryptocurrencies before and during the COVID-19 pandemic. It aims to understand contagion risk and its implications for diversification and financial stability, especially during periods of extreme price volatility.

Using the frequency-domain spillover index, the study analyzes the interconnectedness of cryptocurrency markets with daily data from 10 August 2015 to 10 December 2021. This method allows for examining volatility spillovers across different time frequencies.

The study finds that cryptocurrencies are highly interconnected at higher frequencies, indicating significant contagion risk and limited short-term diversification opportunities. The spillover effects are frequency-dependent, varying across different time horizons.

The findings suggest the need for targeted regulatory policies focused on short-term cryptocurrency behavior to maintain financial stability. Investors should exercise caution when using cryptocurrencies for portfolio diversification, given the high interconnectedness and contagion risk.

This study uniquely contributes to the literature by applying a frequency-domain approach to analyze volatility spillovers across multiple cryptocurrencies, particularly in the context of the COVID-19 pandemic. It provides novel insights into the frequency-dependent nature of spillover effects, offering a deeper understanding of the contagion risk in cryptocurrency markets.

To explore how inclusive banking services are marketed to financially vulnerable consumers (FVCs) in Ghana from the perspective of managers. This study aims to explore this under-researched area and contribute towards a transformative service research in the country.

This study adopted a multiple case study research approach to analyse six banks, including commercial, development, investment and rural and community banks. Specifically, semi-structured interviews and archival documents were used to collect data from the perspectives of bank managers.

The empirical research based on practical and theoretical models shows that Ghanaian banks design an array of financial products and services (FPS), adopt innovative traditional marketing strategies and apply inclusive technologies to reach out to the FVCs.

The authors conducted this study on six banks in Ghana; thus, service researchers are cautioned when generalising the findings and conclusions in other contexts beyond the country of focus.

This study offers practical ideas to guide marketers to better understand how banks market their inclusive banking services to FVCs.

This paper provides implications for addressing financial inclusion amongst the “unbanked”, “underserved” and “unserved” collectively known as the FVCs and how Ghanaian banks design FPS to improve service research and well-being outcomes.

This study provides vital information to policymakers in designing FPS aimed at achieving an inclusive financial system to improve the well-being of FVCs in Ghana.