Overview to special issue: Understanding emotions means crossing boundaries within psychology.

Abstract
Emotional processes influence a wide range of mental and physical systems, which makes them difficult to understand from a single perspective. In this special issue of the Review of General Psychology, contributing authors present 4 articles that draw from several areas within psychology in the service of understanding a topic relevant to emotion. In this overview, the authors argue that the long neglect of the scientific study of complex processes such as emotion might be linked, in part, to the fractionation of the field into specialized subdisciplines. Just as emotions were of central concern in the early years of psychology (which was a generalist's era), as psychology moves toward more integration in the late 20th century broad phenomena such as emotions are once again central interests. The 4 articles of this special issue are briefly reviewed as exemplars of an integrated approach to understanding emotional phenomena.