Our review examines the current state of the research on hot executive function (EF), as contrasted with cool EF, with regard to the evidence for construct validity. Current theoretical discussions have examined the conceptual overlap among constructs such as hot EF, effortful control, self-control, and self-regulation. We explore this emerging literature with a focus on research questions, tasks, and methods. Finally, we consider the unresolved questions facing the study of hot EF, most notably the difficulty in determining the relative “heat” of a given task based on task content, testing context, and the individual differences among the participants. (JINS, 2014, 20, 1–5)