ECIN Replication Package for "Understanding cultural persistence and change: a replication of Giuliano and Nunn (2021)"

Giuliano and Nunn (2021) provide econometric evidence that ancestral climatic variability reduces the current importance of tradition. We conduct a “deep reproduction”, comparing the precise descriptions of the individual-level regressions in their article with the corresponding code. This analysis uncovers several major inconsistencies, also related to the code not included in their replication package. A published corrigendum addresses some inconsistencies we had also communicated to the Editor of REStud, but several remain, relating to a substantial portion of the observations. A realignment of the code with the text reveals a more nuanced relationship between ancestral climatic variability and tradition.

朱利亚诺与纳恩（2021）通过计量经济学研究证实，祖先阶段的气候变异性会削弱当前传统的重要性。本研究开展了一次“深度复现”工作，将该论文中个体层面回归分析的精准描述与对应代码进行逐一比对。分析过程中发现了多处重大不一致之处，其中部分问题还与未纳入其复现数据包（replication package）的代码相关。此前已发表的一篇勘误文章，修正了我们也曾向《经济研究评论》（REStud）编辑通报过的部分不一致问题，但仍有不少不一致问题留存，且涉及相当比例的观测样本。将代码与论文文本重新对齐校准后，可揭示出祖先气候变异性与传统之间更为微妙复杂的关联。