When Coincidence Looks Like a Pattern
Why do we think some things are related when they aren’t?
You wash your car, and it rains. The next time this happens, you say, “It always rains after I wash my car!”
But does it—or do those frustrating coincidences simply stick in your memory?
Illusory correlation is the tendency to perceive a relationship between two things when no relationship exists, or to believe their connection is stronger than it actually is.
Our minds search for patterns, but memorable examples can outweigh ordinary ones. You remember the rain that ruined your freshly washed car and overlook all the washes followed by sunshine.
Expectations can strengthen this illusion. If you believe full moons make people behave strangely, unusual behavior on those nights becomes “evidence.” Similar behavior on other nights barely registers.
The same mistake can reinforce stereotypes. A striking negative incident involving a member of an unfamiliar group may feel representative—even when it tells you little about the group overall.
The corrective is to count the misses as carefully as the hits. How often did one event happen without the other? Does the supposed outcome occur just as frequently when the suspected cause is absent?
A memorable coincidence can suggest a question. It cannot, by itself, establish a pattern.
Before saying, “These things always go together,” ask: “Am I seeing a relationship—or remembering a few dramatic examples?”
