I was a horrid public speaker before. Now this from NewScientist (paywall) (14 March 2015):
WATCH what you say, or rather, how you say it. People judge whether you believe in what you say after just 0.2 seconds.
A specific type of brain activity that relates to increased processing of information appeared 200 milliseconds after the start of the clip, whatever its confidence level. However, more confident speech produced higher activity than unconfident speech.
Now I’m more nervous.
