No, the average twelve-year-old wouldn't require such a degree of supervision. However, average or not, you're faced with managing the behavior. It's reasonable to expect that he shower, that he be truthful, that he not be sneaking, that he not hurt the younger children (or anyone, for that matter). You really are his surrogate parents, so it's important to have a plan re: discipline, including consequences for misbehavior. This can sometimes be awkward for an older sibling to do, but it's important. Otherwise you lack some leverage to influence his behavior. Do you punish him for violating the
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