Abstract
This paper describes a technique to determine the contemporaneity of two economic events. It is also possible to determine some characteristics of the contemporaneity, as a descriptive stage previous to causality analysis and model estimations. As an illustration, a case of contemporaneity between news and volatility in finan-
 cial markets is shown. The main result of the exercise is a Laffer curve relationshipbetween corruption and volatility given news.
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