Dual process accounts of reasoning describe thought as operating through two distinct systems, developed across cognitive psychology from the 1970s onward and popularized for a general audience by Daniel Kahneman's 2011 book Thinking, Fast and Slow, which labeled the two systems System 1 and System 2.
Facts
Core ClaimHuman thought operates through two distinct systems: a fast, automatic, largely unconscious System 1 built on habit and emotional association, and a slower, more effortful System 2 capable of deliberate, conscious reasoning. 1 Connections
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Sources
1. Wikipedia: Dual Process Theory
Wikimedia FoundationSystems 1 and 2Quote, Systems 1 and 2
System 2 is evolutionarily recent and speculated as specific to humans. It is also known as the explicit system, the rule-based system, the rational system, or the analytic system.
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