Have you ever experienced that strange sense of coincidence where you learn about something completely new – an unusual word, a historical event, a type of plant – and then suddenly you start seeing it everywhere? You hear it in conversations, stumble upon it on social media, or notice it in a book you’ve had for years. This is known as the Baader-Meinhof Phenomenon, or more simply, the frequency illusion.

What is the Baader-Meinhof Phenomenon?

The Baader-Meinhof Phenomenon is a psychological quirk where something you’ve recently become aware of seems to appear with improbable frequency shortly afterward. It’s named after a strange coincidence in 1994 when a man heard the name of a German terrorist group, the Baader-Meinhof Gang, twice within 24 hours after having never encountered it before.

This phenomenon isn’t about the thing actually becoming more common–it’s about your perception shifting.

Why Does This Happen?

There are two primary factors behind the Baader-Meinhof Phenomenon:

  • Selective Attention: Our brains are fantastic filtering machines. Each day, we’re bombarded with tons of information, but we only consciously notice a small portion. When you learn something new, your brain flags it as important and starts actively picking it out of the background noise you usually tune out.
  • Confirmation Bias: Humans have a natural tendency to look for patterns and seek out information that confirms our existing beliefs. Once you notice something for the first time, your brain is primed to notice it again and again, reinforcing the idea that it’s suddenly become more prevalent.

Examples of Baader-Meinhof

Here are some classic situations where the phenomenon pops up:

  • New Words: You learn the word “mellifluous” (meaning sweetly flowing), and then you hear it in a song on the radio.
  • Products: You decide to buy a new pair of shoes in a particular style, and then you see that style on people everywhere.
  • Names: You meet someone named Zoe, a name you’ve rarely heard, and then you encounter another Zoe within a week.

The Fun Side of Baader-Meinhof

While it can be a bit disconcerting at times, the Baader-Meinhof Phenomenon is a harmless and often fascinating example of how our brains construct our reality. It’s a reminder that the world is full of information we haven’t noticed yet, and sometimes it takes a simple shift of focus to see things in a whole new light.


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<a href="https://englishpluspodcast.com/author/dannyballanowner/" target="_self">Danny Ballan</a>

Danny Ballan


Danny is a podcaster, teacher, and writer. He worked in educational technology for over a decade. He creates daily podcasts, online courses, educational videos, educational games, and he also writes poetry, novels and music.

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