The relative value of specific versus general cognitive abilities for the prediction of practical outcomes has been debated since the inception of modern intelligence theorizing and testing. This editorial introduces a special issue dedicated to exploring this ongoing "great debate". It provides an overview of the debate, explains the motivation for the special issue and two types of submissions solicited, and briefly illustrates how differing conceptualizations of cognitive abilities demand different analytic strategies for predicting criteria, and that these different strategies can yield conflicting findings about the real-world importance of general versus specific abilities.
Keywords: bifactor model; cognitive abilities; educational attainment; general mental ability; hierarchical factor model; higher-order factor model; intelligence; job performance; nested-factors model; relative importance analysis; specific abilities.