The Frequency Illusion, also known as the Baader-Meinhof phenomenon, refers to the phenomenon where after encountering a new word, phrase, or concept, we suddenly start noticing it everywhere. It creates the illusion that the frequency of encountering the new information has increased.

One example of the Frequency Illusion is when you buy a new car. Suddenly, you start noticing that same make and model of car on the road more frequently. It feels as if the number of cars has magically increased overnight, but in reality, it's just your brain paying more attention to something that has become familiar to you.

This phenomenon occurs due to a combination of cognitive biases and selective attention. Our brains are wired to seek patterns and make connections, so when we encounter something new, our brain starts actively searching for it. This selective attention makes us more likely to notice and remember instances of the new information, leading to the feeling of increased frequency.

References:

1. The Frequency Illusion: Why You See What You've Just Learned Everywhere
2. Why Do We See the Same Faces in Random Objects?

Overall, the Frequency Illusion is a fascinating cognitive phenomenon that highlights how our perception of frequency can be influenced by our attention and awareness. It reminds us to be mindful of our biases and to question whether the increased frequency is a true reflection of reality or simply a trick of our minds.