Lately, one particularly adrenaline-inducing travel tip has made major waves on social media: Enter the “airport theory,” which posits that you need only arrive at the airport by 15 or 20 ...

Using modern portfolio theory, investors can build portfolios that maximize return for a given level of risk or minimize risk for a desired level of return. Since its introduction by Henry ...

Social comparison theory is the idea that individuals determine their own social and personal worth based on how they stack up against others. The theory was developed in 1954 by psychologist Leon ...

Between May 2023 and March 2025, the price of DStv’s premium package surged by 53 per cent, while the GoTV ...