It's common for families to talk during meals, and this includes the children. Having stayed with a Japanese family (mother, father, and child), it seems to be common and normal. I don't think that "children should be seen and not heard" mentality is the norm, as I've never seen it. Kids to me, imo, are actually quite pampered.Nope, never saw that. They just close their eyes, clap their hands and say it.While I'm at it, I may as well ask more about "gochisousama deshita". I imagine the person thanking turns their eye contact to whoever prepared the meal, holds their hands in the Namaste position, and says this, essentially saying thank you for the meal? Anything else to this?