"This second edition is revised and updated and explains how to use many recent technical developments in time series econometrics. The main objective of this book is to help many applied economists, with a limited background in econometric estimation theory, to understand and apply widely used...

"Economics and history both strive to understand causation: economics using instrumental variables econometrics and history by weighing the plausibility of alternative narratives. Instrumental variables can lose value with repeated use because of an econometric tragedy of the commons bias: each...