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Author: WikiMatrix
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English[en]
A-not-B error (also known as "stage 4 error" or "perseverative error") is a phenomenon uncovered by the work of Jean Piaget in his theory of cognitive development of children.
Swedish[sv]
Perseverativt fel (eng. A-not-B error, stage 4 error, perseverative error) är ett fenomen som upptäcktes i Jean Piagets arbete om kognitiv utveckling hos barn.