I have spent about a decade working on the application of BE to behaviour change/running courses on it ( since doing work for UK govt via the late lamented COI). This piece (published first in Aurora) offers a basic briefing on its application to communications.
Key thought in a 100 words or less: we delude ourselves, because we are able to develop verbal arguments, that we are mainly rational/considered in our decision making. Yet much of our thinking is fast, instinctive and informed by visuals rather than words. You can see the results everywhere- not least in the high value that brands place on developing instantly recognisable visuals (The insurance market is probably the most extreme example).
For practitioners (rather than academics) I have two must read book recommendations :- 1) Decoded by Phil Barden and 2) The Choice Factory by Richard Shotton ( the first of these has the best summary I have read of Daniel Kahneman great book Thinking Fast and Slow