bandwagon effect

The bandwagon effect is a social behavior where the growing success of something, like a cause or trend, attracts more widespread support as people notice its increasing popularity. This phenomenon can be seen in various contexts, such as political campaigns where early wins can create momentum, or in financial markets where a stock's outperformance draws more investors. Essentially, as more people join in, others are influenced to follow suit, propelling the trend further. This is also known as a cognitive bias that can make people feel safer in numbers, even if the crowd is wrong.12