Existing research and theory provides support for the assertion that the survival of organizations in the globalized world is contingent upon the match between their external complexity and the complexity of their internal systems, including their leadership processes. Global leaders high in self-complexity are equipped to lead the successful adaptation of their organizations to their global environments. Unfortunately, the absence of clear conceptualization and valid, reliable measures have prevented the advancement of our understanding of self-complexity in general, and global leader self-complexity in particular. To help close this research gap, I put forth a theory of global leader self-complexity, which I then operationalize with the Global Leader Self-Complexity Scale (GLSCS). I assess the factor structure, reliability, and validity in three studies. The Study 1 results suggest that global leader self-complexity is a two-dimensional construct comprised of global leader self-differentiation and self-integration. The Study 2 results provide evidence for the test-retest reliability and convergent, divergent, and predictive validity of the GLSCS. Obtained with a sample of hundreds of global leaders from around the world, the Study 3 results provide evidence for the generalization validity of the GLSCS. The theoretical implications for the nomological network of global leader self-differentiation are self-integration are discussed, as well as practical implications for the development and selection of effective global leaders. Finally, I suggest avenues for future researchers to advance the research of global leader self-complexity and leader self-complexity more broadly.

现有研究和理论支持这样一种断言，即组织在全球化世界中的生存取决于其外部复杂性与其内部系统复杂性（包括其领导过程）之间的匹配。自我复杂性高的全球领导者有能力领导他们的组织成功地适应全球环境。不幸的是，缺乏清晰的概念和有效、可靠的措施阻碍了我们对一般自我复杂性的理解，特别是全球领导者的自我复杂性。为了帮助缩小这一研究差距，我提出了全球领导者自我复杂性的理论，然后我将其与全球领导者自我复杂性量表 (GLSCS) 结合使用。我评估因子结构、可靠性、和三项研究的有效性。研究 1 的结果表明，全球领导者的自我复杂性是一个由全球领导者自我分化和自我整合组成的二维结构。研究 2 结果为 GLSCS 的重测信度和收敛、发散和预测有效性提供了证据。研究 3 的结果从来自世界各地的数百名全球领导者的样本中获得，为 GLSCS 的泛化有效性提供了证据。讨论了全球领导者自我分化的规则网络的理论意义是自我整合，以及对有效全球领导者的发展和选择的实践意义。最后，