[KongchangAI]
Unverified50% confidenceFactExact time

皮亚杰认知发展理论将儿童认知发展划分为四个阶段:感知运动阶段(0-2岁)、前运算阶段(2-7岁)、具体运算阶段(7-11岁)和形式运算阶段(11岁以上)

1
Sources
50%
Confidence
Long-term
Relevance
7/12/2026
First Seen

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curl https://kongchang.com/api/v1/knowledge/claims/493946
MCP
get_claim(id=493946)