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er-heterogeneity

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Use when designing or writing the heterogeneity section of an 《经济研究》 (Economic Research Journal) manuscript — choosing which dimensions to cut, justifying each cut theoretically, presenting subsample results with coefficient-difference tests, and wiring at least one dimension back to the mechanism story so heterogeneity doubles as mechanism evidence. 使用时机：主结果已稳健但只切了"东中西"一类单一维度、审稿人要求补做异质性、或切分维度缺乏理论指引时。

Economic-Research-Journal-Skills/skills/er-heterogeneity/SKILL.md

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# 异质性分析（er-heterogeneity）

## 触发时机

- 主结果已稳健，但只切了一个维度（"东中西"或"国企 / 非国企"）
- 审稿人要求补做异质性
- 切了多个维度但没有理论指引

## 切分维度优先级

按《经济研究》读者期待度排序：

1. **制度环境 / 市场化程度** —— 王小鲁《中国分省份市场化指数》、各地法治指数
2. **企业产权 / 公司治理** —— 国企 / 民企 / 外资、董事会独立性
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