“System 1 operates automatically and quickly, with little effort and no sense of voluntary control. System 2 allocates attention to effortful mental activities, including complex computations. The operations of System 2 are often associated with the subjective experience of agency, choice, and concentration.”
—
Daniel Kahneman
Thinking, Fast and Slow (2011), Farrar, Straus and Giroux, Part I
Commentary
Kahneman's dual-process model distinguishes intuitive (System 1) from deliberative (System 2) thinking. This is not new (William James distinguished 'intuition' and 'reflection'), but Kahneman grounded it in neuroscience and extensive behavioral evidence.
System 1 is fast, automatic, often accurate but prone to heuristic biases. System 2 is slow, effortful, more accurate but cognitively expensive. Most of life relies on System 1; we engage System 2 only when necessary or when confronted with complexity. This model explains cognitive errors, risk assessment failures, and decision-making anomalies. It revolutionized behavioral economics.
Commentary
Kahneman's dual-process model distinguishes intuitive (System 1) from deliberative (System 2) thinking. This is not new (William James distinguished 'intuition' and 'reflection'), but Kahneman grounded it in neuroscience and extensive behavioral evidence.
System 1 is fast, automatic, often accurate but prone to heuristic biases. System 2 is slow, effortful, more accurate but cognitively expensive. Most of life relies on System 1; we engage System 2 only when necessary or when confronted with complexity. This model explains cognitive errors, risk assessment failures, and decision-making anomalies. It revolutionized behavioral economics.