Eh, I don’t know. Ours had no trouble talking in full sentences by 2 without it. I’m interested to see some data.
Also our indicator of “pay attention to this” was, well, giving them some attention. Eye contact, touch, etc.
But yeah, sample size of one. Maybe you’re right. I don’t know. Kids are weird. ¯\\_(ツ)_/¯











Well thanks for putting that hilarious image in my head of what (outside) looks like!