The art of thinking · 6 · Judgment, action and error
Dual-process theory
Also known as: Dual-process theories, System 1 and System 2, Type 1 and Type 2 processing
In cognitive psychology, dual-process theories distinguish two kinds of thinking: fast, automatic, intuitive processing (Type 1, often called System 1) and slow, deliberate, effortful processing that draws on working memory (Type 2, System 2).
- Cognitive psychology
- Judgment
In one sentence
Dual-process theories separate fast, automatic thinking (Type 1, “System 1”) from slow, deliberate thinking (Type 2, “System 2”).
Example
A routine operator reads a familiar warning with Type 1 processing and moves on. A changed warning only gets Type 2 attention if something in its form signals that it is different.
What the research shows
Many findings in reasoning, judgment and social cognition fit a distinction between autonomous processes that run without working memory and processes that require it and can override intuitive responses. Evans and Stanovich (2013) define Type 2 processing by its reliance on working memory and the ability to decouple hypothetical thinking from the present; other features (slow, conscious, rational) are typical correlates, not definitions. Kahneman’s Thinking, Fast and Slow (2011) popularized the System 1/System 2 labels.
Evidence status
The general distinction is widely used, but its status is contested: critics (Kruglanski and Gigerenzer, 2011; Melnikoff and Bargh, 2018) argue that the features don’t cluster into two systems and that a single continuum explains the data. Proponents now speak of two types of processing, not two brain systems. Popular claims that “System 1 is irrational” or that people can be sorted into intuitive and analytic thinkers are not supported.
How it applies
Much reading of documentation is Type 1: scanning, recognizing familiar layouts, acting on habit. Design means that interrupt routine where it matters (changed layout, salient signal words) and support routine elsewhere are covered in the application glossary. The related behavioral levels are skill-, rule- and knowledge-based behavior.
External references
- Evans, J. St. B. T., & Stanovich, K. E. (2013). Dual-process theories of higher cognition. Perspectives on Psychological Science, 8(3), 223–241. https://doi.org/10.1177/1745691612460685
How to read this pool
Entries, context cards and transitional topics
The art of thinking explains ways of thinking — where a method comes from, what it asks of you and how it was adapted later. You meet four kinds of content here, each with its own job:
- Glossary entry
- Defines one concept or method of thinking: its origin, an example and how it relates to neighboring ideas. “X vs. Y” sections set two methods side by side.
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- Reference entry or context card
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