two-system theory
nounThe idea that our brain thinks in two ways: one fast and automatic, and one slow and careful.
The two-system theory explains why you can catch a ball without thinking but need time to solve a math problem.
OTHER MEANINGS
2. A model in psychology describing fast, intuitive thinking (System 1) and slow, analytical thinking (System 2).
According to the two-system theory, System 1 helps you recognize a friend's face instantly.
3. A framework in economics and decision science explaining how people make quick versus careful choices.
The two-system theory is often used to study why shoppers make impulsive purchases.
4. A teaching concept that divides learning into automatic skill and conscious problem-solving.
Teachers use the two-system theory to help students practice both quick recall and deep reasoning.