Many countries are becoming increasingly culturally heterogeneous and diverse. Yet, the cross-cultural research literature has only paid limited attention to the measurement of within-country cultural diversity. Following an analogy from evolutionary biology, this article proposes a novel index of cultural heterozygosity, which takes the individual as a starting point. It develops a distribution-free algorithm, which compares all individuals in a given country sample with each other. This index is different from commonly used fractionalization indices; its relevance for international business research is illustrated with an empirical example regarding country-level differences in corruption.

许多国家正变得越来越具有文化异质性和多样性。然而，跨文化研究文献只对国内文化多样性的测量给予了有限的关注。本文借鉴进化生物学的类比，提出了一种新的文化杂合度指数，以个体为出发点。它开发了一种无分布算法，该算法将给定国家样本中的所有个体相互比较。该指标不同于常用的细分指标；它与国际商业研究的相关性通过一个关于国家一级腐败差异的经验例子来说明。