There's a difference between nudge as in the technical meaning here from behavioural psychology, and what we would commonly call a nudge in everyday english. An

There's a difference between nudge as in the technical meaning here from behavioural psychology, and what we would commonly call a nudge in everyday english. An economist or politician might describe Draghi's statement as trying to nudge the behaviour of the banks, sure, but that doesn't conform to what behavioural psychologists mean by a nudge in the technical sense. Which is fine of course, pretty much every specialist discipline has special meanings for some everyday words.