Just want to remind everyone the most valuable thing you can give to your child is honest communication, Once the trust is made and they feel secure, the are open to anyhing you say.. We told our 3 from birth that they were not allowed to yell at or touch their sibling. Our evenings were peaceful. Nap time rules , be still be quiet and close your eyes. My kids napped everyday into kindergarden. Misbehavior is a lack of discipline. Tell them all you think and feel and they will grow up to be well behaved ,open and honest to themself. In other words why wait til baby is two or three to state that they are not allowed to cross the line into the kitchen. All of ours as crawlers learned where to stop even if I wasn't looking. Yes of course the tested me, but I never let them do it because IT IS NOT ALLOWED. Call us stern, but I never had a toddler underfoot while cooking or in the cabinets. Never babyproofed home, just taught them what they could and couldn't do when I had their trust. Our children never wandered they always "said hey I messed up" So parents please as you think of birthing, which stroller, pacifier or thumb, take a few minutes. Ask yourself, "What kind of person do I want my child to Be" teach them the skills they need in life to become all they want with love and happiness.