IDEA FOUND // IDEA 02
Confirmation Bias
“I tell you that “2–4–6” follows a rule. Would you try “8–10–12,” or a sequence that could defeat your first idea?”
01 / PLAINLY
What it means, plainly
Confirmation bias appears when we seek or interpret cases that fit our first idea without putting it against strong alternatives. One matching observation may support several explanations at once.
02 / CONTEXT
A little more
When testing a hypothesis, we often choose examples expected to work if it is true. The problem is that those examples may fit rival explanations too. More informative tests distinguish alternatives and risk proving our first intuition wrong.
03 / WHY IT MATTERS
Why it matters
It can make favorable testimonials, memories, and searches look stronger than they are. Building a rival test improves a decision without pretending that anyone can be perfectly neutral.
02 / SEQUENCE
What happens
- 01
You form an initial explanation from the information available.
- 02
You seek or interpret examples that fit it.
- 03
Without a strong rival test, you overestimate how much the evidence supports it.
04 / EXAMPLE
A familiar example
If you think music improves your memory, you may recall successful study sessions with music. A real comparison also tracks silent sessions, task difficulty, and sleep.
05 / LIMIT
What it does not mean
Evidence that agrees with a belief is not automatically invalid; what matters is how it was sought, interpreted, and compared.
06 / NOTICE
Notice it in your day
Choose an everyday belief. Write down one rival explanation and an observation that would separate them, then look for that observation before collecting more favorable examples.
FINAL NOTE
The idea worth keeping
Before searching, write down what result would change your mind and test a rival explanation.
QUESTIONS / 02
Questions people still have
Is evidence that agrees with a belief automatically invalid?
No. Its value depends on how it was sought, interpreted, and compared with rival explanations, not merely on agreement.
What makes a test more informative?
It can distinguish between alternatives, and it allows an outcome that would put the first explanation in trouble.
CHECK / 01