We discuss statistical inference problems associated with identification and testability in econometrics, and we emphasize the common nature of the two issues. After reviewing the relevant statistical notions, we consider in turn inference in nonparametric models and recent developments on...

It is well known that standard asymptotic theory is not valid or is extremely unreliable in models with identification problems or weak instruments [Dufour (1997, Econometrica), Staiger and Stock (1997, Econometrica), Wang and Zivot (1998, Econometrica), Stock and Wright (2000, Econometrica),...

High-flying illusions on the part of the proponents and grim predictions on the part of the sceptics have characterised the controversy around Brexit. The article assesses five key issues at stake for post-Brexit relationships between Britain, the EU, and Africa: market access, foreign direct...