The first almost always leads to silence, whereas the second makes it easier for people to feel comfortable asking questions.
When you want to convey something significant to your children, do so in a low voice so that they can hear you.
They don't respond to your yelling, but whispering does.
If you look at someone who is shy and nod your head, it encourages them to continue speaking.
Smile and say "hello" to everyone you know.
Just picture it: They will view you as a nice person if you greet people enthusiastically and smile when they come into your home twice a year.
It takes so little for someone to find you friendly!