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1 天前 · One of the most influential psychologists of the 20th century is Jean Piaget. He is known for his theory of cognitive development, which explores how children learn and develop intellectually. These psychologists have had a lasting impact on the field of psychology and have helped shape our understanding of human behavior and thought processes.
1 天前 · Fuzzy concept. A fuzzy concept is a kind of concept of which the boundaries of application can vary considerably according to context or conditions, instead of being fixed once and for all. [1] This means the concept is vague in some way, lacking a fixed, precise meaning, without however being unclear or meaningless altogether. [2]
