Intelligence (i.e., g, general mental ability) is an individual difference that is arguably more important than ever for success in the constantly changing, ever more complex world of business (Boal, 2004; Gatewood, Field, & Barrick, 2011). Although the field of industrial–organizational (I–O) psychology initially made substantial contributions to the study of intelligence and its use in applied settings (e.g., Hunter, 1980; Schmidt & Hunter, 1981), we have done relatively little in recent times about studying the nature of the intelligence construct and its measurement. Instead, we have focused predominately on using intelligence to predict performance outcomes and examine racial subgroup differences on intelligence test scores. Although the field of I–O psychology continues to approach intelligence at a surface level, other fields (e.g., clinical psychology, developmental and educational research, and neuropsychology) have continued to study this construct with greater depth and have consequently made more substantial progress in understanding this critical and complex construct. The purpose of this article is to note this lack of progress in I–O psychology and to challenge our field to mount new research initiatives on this critical construct.

The goal of our focal article was to initiate a conversation on how I–O psychology can reengage in research on intelligence. We are encouraged by the ways in which the commentators have furthered this conversation. We discuss 4 overarching themes in the set of commentaries: the extent that I–O psychology is contributing to the intelligence field, outsiders' impressions of I–O psychology's contributions to intelligence research, ways I–O psychology can contribute to intelligence research, and ideas about what prevents us from doing this research. We hope this collection of articles serves to truly ignite research by our field on this critical construct.

Global leaders operate in a context of multicultural, paradoxical complexity in the world—a context that most leaders find themselves facing today. We argue that 4 developmental shifts are required to be effective in this context: developing multicultural effectiveness, becoming adept at managing paradoxes, cultivating the “being” dimension of human experience, and appreciating individual uniqueness in the context of cultural differences. Challenges for industrial–organizational (I–O) psychology are identified in each area. The article concludes by inviting I–O psychologists to integrate competing frameworks, explore related disciplines, revamp leadership competency models, create new tools and frameworks for developing global leaders, and step up to become global leaders ourselves.