I'd like to begin with a few phrases that will probably sound familiar to the parents out there. Teach your kids to listen the first time. You can potty train your toddler in a weekend.If your kids don't listen the first time, it's because you don't mean it enough. And reward the good behavior, but ignore or punish the bad. These phrases are common.They're shared on Instagram, passed along in parenting groups, advised by family members, and even repeated in medical communities. They're packaged as common se ...