A two-part model is estimated to see if increasing returns and comparative advantage are empirically equivalent in explaining intra-industry trade. The model has separate mechanisms for determining the occurrence and the extent of intra-industry trade. Estimation is based on an augmented Grubel-Lloyd index derived from the data set on SITC 7 goods at the 3-digit SITC (Revision 4) for country pairs in which Korea is fixed as a source country. Estimation results show that both increasing returns and comparative advantage can explain the occurrence and the extent of intra-industry trade.

中文翻译：

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报酬递增与比较优势作为产业内贸易的决定因素：韩国的行业分析

估计分为两部分的模型，以了解在解释行业内贸易时，经验上是否等同于增加的回报和比较优势。该模型具有独立的机制来确定行业内贸易的发生和程度。估算基于增强的Grubel-Lloyd指数，该指数来自3位数SITC（修订版4）的SITC 7产品数据集，该国家/地区对将韩国固定为来源国。估计结果表明，增加的报酬和比较优势都可以解释行业内贸易的发生和程度。