How Does The Most Common Cognitive Bias Work?

The most common cognitive bias makes people believe something is better just because they already own it.

Imagine you have a favorite toy, let's say it's a red ball. You love playing with it every day. One day, your friend shows you a shiny blue ball that looks really cool. But when you ask if you can trade your red ball for the blue one, you say no. Why? Because you already own the red ball and feel attached to it.

This is like having a favorite snack, maybe chocolate cookies. When your friend brings in peanut butter cookies, they’re tasty too, but you still choose chocolate because that’s what you know and love.

It's kind of like when you have a favorite shirt, even if there's a new one that looks better, you might still wear the old one just because it's already yours.

This is called the "endowment effect", and it happens to people all the time. You value things more once they belong to you, even if something else might be better.