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Thinking and Reasoning_ A Very Short Introduction (Very Short Introductions)

A concise survey of how cognitive psychology explains human thinking, reasoning, and decision making, showing why we are often biased yet broadly intelligent, and proposing a dual-process 'two minds' account.

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What it’s about

Drawing on a lifetime of research begun under Peter Wason, Jonathan Evans offers a lucid tour through the modern psychology of thought: problem solving, hypothetical reasoning, decision making, deductive and probabilistic reasoning, the great rationality debate, and dual-process theory. He shows that most of our mental work happens automatically and unconsciously, that human reasoning is naturally belief-based rather than logical, and that systematic cognitive biases pervade judgment under uncertainty. Yet he resists the easy verdict that humans are simply irrational, situating laboratory errors within debates over normative standards, ecological validity, evolution, intelligence, and the architecture of two interacting minds. Accessible and example-rich, the book equips readers to understand both the failures and the extraordinary powers of human reasoning.

The through-line

Who it’s for
A curious reader who wants to understand how the human mind thinks, reasons, and decides—and why it so often goes wrong.
The problem
Human thinking is riddled with cognitive biases and reasoning errors that affect medicine, law, finance, and everyday choices. The reader feels uncertain about whether to trust their own intuitions and judgments.
The plan
  1. Trace the history from introspection and behaviorism to cognitive psychology.
  2. Learn how problem solving, insight, and expertise work.
  3. Understand hypothesis testing, causal and counterfactual reasoning.
  4. Examine decision making, probability judgment, and their biases.
  5. Study deductive and Bayesian reasoning and the rationality debate.
The payoff
The reader recognizes their own biases and knows when to slow down and reason. · They interpret evidence, probabilities, and risks more critically. · They appreciate both the powers and limits of human intelligence.

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