ABSTRACT
More is known about intelligence than any other individual difference in psychology. In this chapter, we review the research on intelligence as applied to leadership. We focus on two broad traditions: psychometric and historiometric. We discuss the history of these approaches and highlight major findings that are especially relevant for explaining occupational success and leadership outcomes across an array of contexts. We also focus on broader issues concerning how to model the functional form of the relation of intelligence on outcomes, while bearing in mind criteria and contextual effects, the heritability of intelligence and its implications, as well as methodological issues concerning the study of intelligence on outcomes.
