https://www.erfin.org/journal/index.php/erfin <p>The journal publishes empirical studies in finance and economics. See our <a href="/journal/index.php/erfin/about/editorialPolicies#focusAndScope" target="_self">Focus and Scope</a>.</p> SGH Warsaw School of Economics, Collegium of Economic Analyses en-US Econometric Research in Finance 2451-1935 https://www.erfin.org/journal/index.php/erfin/article/view/194 <p>We investigate the relationship between the three most popular uncertainty measures with the means of the state-of-the-art connectedness frameworks applied to the time-varying parameters vector autoregression model with stochastic volatility. We find marked increases in uncertainty connectedness during major economic turmoil and hostile events. VIX turns out to be the most forward-looking uncertainty measure that persistently<br>transmits shocks to the remaining uncertainty proxies at lower frequencies. In turn, GPR, approximating specific information related to geopolitical risk, transmits shocks to other measures at short-term frequencies, while the EPU index is largely replicating unanticipated movements in the VIX or GPR. We also present implications of these findings for economic modelling.</p> Karol Szafranek Michał Rubaszek Gazi Salah Uddin ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2023-12-31 2023-12-31 8 1 1 30 https://www.erfin.org/journal/index.php/erfin/article/view/197 <p>This paper explores the impact of environmental regulations on environmental quality and green growth, utilizing panel data from six ECOWAS economies. The study employs the CSD-PLS framework, incorporating the Dumitrescu-Hurlin’s panel test, covering the period from 2000 to 2020 with quarterly data. The regression model applied to panel data reveals an inverted <em>U</em>-shaped interaction between environmental regulation and environmental destruction in selected ECOWAS economies, indicating the presence of innovation compensation. Additionally, a <em>U</em>-shaped relationship is identified between environmental regulations and green growth, aligning with the Porter hypothesis. The findings suggest that effective environmental protection policies reduce environmental destruction and promote green growth in ECOWAS economies. Supportive environmental protection policies encourage enterprises to develop environmentally friendly technological and business innovations, which mitigates environmental pollutant emissions and energy consumption, fostering environmental sustainability and green growth.</p> Rahman Olanrewaju Raji ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2023-12-31 2023-12-31 8 1 31 51