In order to diversify a portfolio, find prices, and manage risk, derivatives products are now necessary. There is a lack of understanding of the true influence of derivatives on the behavior of the underlying assets, their volatility consequences, and their pricing as complex instruments. There is a dearth of empirical research on how these instruments impact company risk exposures and inconsistent findings. This study examines corporate derivatives’ impact on stock price exposure and systematic risk in South African non-financial firms. Using a dataset of listed firms from 2013 to 2023, we employ Generalized Autoregressive Conditional Heteroscedasticity (GARCH) models to assess the effect of derivatives on return volatility and beta, a measure of systematic risk. Additionally, we apply the Generalized Method of Moments (GMM) to address potential endogeneity between firm characteristics and derivatives use. Our findings suggest that firms using derivatives experience lower overall volatility and reduced systematic risk compared to non-users. The results are robust to various control factors, including firm size, leverage, and macroeconomic conditions. This study fills a gap in the literature by focusing on an underrepresented emerging market and provides insights relevant to global risk management practices.

Understanding the factors that influence early science achievement is crucial for developing effective educational policies and ensuring equity within the education system. Despite its importance, research on the patterns of young children achieving science learning milestones and the factors that can reduce disparities between students with and without disabilities remains limited. This study analyzes data from the Early Childhood Longitudinal Study of Kindergarten Cohort 2011 (ECLS-K: 2011), which includes 18,174 children from 1328 schools across the United States, selected through a complex sampling process and spanning kindergarten to 5th grade. Utilizing survival analysis, the study finds that children with disabilities achieve science milestones later than their peers without disabilities, with these disparities persisting from early grades. The research highlights the effectiveness of center-based programs in enhancing science learning, particularly in narrowing the achievement gap between children with and without disabilities. These findings contribute to the broader discourse on equity in the education system and policy by introducing novel methodologies for assessing the frequency and duration of science learning milestones, and by providing insights into effective strategies that support equitable science education.

This study is considered one of the few studies that attempted to explore the relationship between exports and foreign direct investment in the Kingdom of Saudi Arabia. The study aims to determine the nature of the relationship between exports and foreign direct investment in the Kingdom of Saudi Arabia during the period between (1990–2023). Employing Ender’s methodology using cointegration and error correction model. The study also relies on data on Saudi exports and foreign direct investment inflows from the World Bank databases. The results indicate the existence of Cointegration between foreign direct investment (FDI) inflows and the Saudi exports in the period (1990–2023), as for the causal relationship between the two variables, the results showed the causal relation between exports and FDI inflows from the direction of exports only, which means that Saudi exports cause FDI inflows in Saudi Arabia, and the study recommends giving more incentives to attract foreign investors in different sector rather than oil sector, besides improving the logistical services which is vital to any investment attraction strategy.

Perceptions of women’s roles and leadership in urban governance vary from country to country and culture to culture. While women are represented and participate fully in political decision-making in some countries, in Togo women’s participation in local governance is still limited. The aim of this research is to analyse perceptions of women’s leadership in urban governance in the communes of greater Lomé. Specifically, the study of the influence of general perceptions of the role of women on the development of their leadership in the urban governance of greater Lomé (i) and the implications of these perceptions on the participation of women in the urban governance of greater Lomé (ii). Semi-structured interviews were conducted in all the town halls of the thirteen greater Lomé autonomous district communes with 222 women and 162 men, i.e., a total of 384 people. The corpus created from the interviews, which were transcribed in their entirety, was analyzed using the theory of social dominance developed by Sidanius and Pratto to explain power relations and inequalities between social groups. The results show that perceptions of women’s participation in urban governance vary and are generally associated with several significant implications. The general perception is that women are not as competent or legitimate as men in political and administrative leadership roles. However, there is a growing recognition of the value of gender diversity in urban governance, with a growing awareness of the importance of including women in decision-making processes. From the point of view of the significant implications of perceptions, positive perceptions favor increased representation of women, innovation, and creativity, strengthening legitimacy, reducing inequalities, and presenting women as positive role models in urban governance.