quiz on tv

BG 225 – Clap for yourself

Lately, I’ve noticed something special when I’m watching, for example, a quiz on TV.
As soon as someone has won a round of the quiz, or the whole quiz, and the other attendees clap for her or him, the person in question simply claps along.
Apparently, that clapping is contagious and the winner automatically participates, instead of receiving the praise with a grateful nod or smile.
Why applaud yourself?
Do they have no idea that the applause is meant for them, and just mindlessly follow the rest, like a herd animal?
Or do they consciously choose to clap for themselves?
Am I the only one who thinks that’s a little strange?