systemoneandsystemtwo
nounUK /ˈsɪstəm wʌn ənd ˈsɪstəm tuː/
US /ˈsɪstəm wʌn ænd ˈsɪstəm tuː/
Two ways your brain thinks: one is fast and automatic, and the other is slow and careful.
When you catch a ball without thinking, that's system one and system two working together.
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OTHER MEANINGS
2. A model in psychology describing quick, intuitive judgments versus slow, deliberate reasoning.
The teacher explained system one and system two using a simple puzzle.
3. A way to talk about habits versus careful planning in everyday choices.
Choosing a snack by habit is system one and system two is comparing nutrition labels.
4. A pair of thinking styles often used to explain mistakes and good decisions.
The book on system one and system two helped her understand why she rushed.