Thinking, Fast and Slow · chapter 1 · id thinking-fast-and-slow-c1-01-humans-have-two-distinct-cogni

“Humans have two distinct cognitive systems: System 1 (fast, automatic, intuitive) and System 2 (slow, deliberate, analytical), as formalized by Stanovich and West (2000).”

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Receipts

Stanovich & West (2000), Behavioral and Brain Sciences 23(5)DOI registry: valid

We use the terms 'System 1' and 'System 2' to describe processing that is fast, automatic and relatively effortless versus processing that is slow, serial and effortful.

Evans & Stanovich (2013), Perspectives on Psychological Science 8(3)DOI registry: valid

The distinction between Type 1 (autonomous) and Type 2 (working-memory-dependent) processing is well-supported, though the two-system framing is a simplification.

Melnikoff & Bargh (2018), Trends in Cognitive Sciences 22(4)DOI registry: valid

The features attributed to System 1 (fast, automatic, unconscious) do not reliably co-occur, nor do those attributed to System 2. The two-system framework lacks clear falsifiable criteria.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.