手足关系如何随着孩子的成长而发展变化？手足关系如何影响儿童的心理健康？父母/照护者怎么调解孩子之间的手足关系和冲突，如何促进手足间的和睦相处？
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How do sibling relationships change over development? How does a sibling relationship influence children’s mental health adjustment? What can parents/caregivers do to promote positive relationships among siblings?
