contagion spillover volatility by focusing on a sample of major oil-exporting and oil-importing countries using daily data from …; during COVID-19; and during the Russian-Ukrainian war. Our results confirm the persistence of volatility for the series … volatility transmission between oil prices and exchange-rate markets. However, the COVID-19 pandemic and the Russian …

individuals' sleep time exhibits both variability and volatility characterized by stationary autoregressive conditional … young children at home. Volatility is greater among parents with young children, slightly greater among men than women, but … independent of other demographics. A theory of economic incentives to minimize the dispersion of sleep predicts that higher …

paper offers a solution to this disagreement, suggesting that volatility carries a positive direct effect, but also a … volatility is then ambiguous. The paper reveals the underlying endogeneity of government size in a balanced panel of 95 countries … increase of volatility lowers growth by up to 0.57 percentage points in a democracy, but raises growth by 1.74 percentage …

European unemployment rates. They also generate positive comovements in macroeconomic variables and a large relative volatility …

than by GARCH type volatility estimates. The t-DCC estimation procedure is applied to a portfolio of daily returns on …-DCC specification. The t-DCC model also passes a number of VaR diagnostic tests over an evaluation sample. The estimation results … suggest a general trend towards a lower level of return volatility, accompanied by a rising trend in conditional cross …