This paper aims at providing a snapshot of the state-of-the-art in research involving this newly minted construct through systematic review and analysis.In this article

we set out to distinguish what is known from what is unknown in relation to EI conceptual issues which are the most paramount concern of EI research.This article includes three sections.In section 1

we start by discussing assertions that may be made with some degree of confidence

elucidating what are essentially sources of consensus concerning theories

models

and definitions of EI.We move then to discuss sources of controversy in section 2;those things for which there is less agreement regarding the theoretical status

conceptual underpinnings

and models of EI.In section 3

we conclude with the key questions that we posed for contributors asked to tackle theoretical issues and why exactly we saw these as important topics to cover.We hope this article will provide a platform for new research in both basic and applied domains.