What is the art of tearing paper to create sculpted art called?

Aloha asked:


I have never been exposed to this art in the professional arena, however my son creates this art naturally (also not been exposed to it other than his own ability) and it is stunning. He enjoys origami, but does not enjoy it’s limitations. I have heard there is an art form name for this, but the PhD I spoke with could not recall it’s title, but he assures me this is a known art form. Can you help me?
He does not use a glue type of medium or a frame to apply it. It is simply paper torn and assembled into things (bowl of fruit, leaves, trucks, stairs, boxes, working locks and keys)