problem-solving stages

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The successive phases that can be observed in the process of problem solving. According to the most influential scheme, proposed by the English psychologist Graham Wallas (1858–1932) in his book The Art of Thought (1921), the stages are preparation, incubation, illumination or insight (2), and verification. According to the US philosopher John Dewey (1859–1952) in his book How We Think (1933), the stages are suggestion, translation of a difficulty into a well-defined problem, framing of a hypothesis, reasoning, and testing.

Subjects: Psychology.

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