To which degree can variation in sentiment-based indicators of central bank communication be attributed to changes in macroeconomic, financial, and monetary variables; idiosyncratic speaker effects; sentiment persistence; and random "noise" ? Using the Loughran and McDonald (2011) dictionary on a...

We empirically examine how complexity of ECB communications affects financial market trading based on high-frequency data from European stock index futures trading. Our sam-ple covers ECB press conferences between January 2009 and December 2017, during which unconventional monetary policy...