I think they do to some degree.the way I disciplined for biting and pinching though is that I did it back, not hard but hard enough that he understood that it did hurt and he was hurting people
@gabes_mommy_5.11.14, thanks I do that with my 8 months old and wonder if she understands
I didn't really start disciplining till closer to 1 when he could some what understand me
@gabes_mommy_5.11.14, oh that's not a bad idea