Although the idea of having different rules in your household for your children who are different ages might seem self-evident, the actual implementation of those rules can be troublesome. Any parent who has tried, for example, to institute an earlier bedtime for their 6 year old when they have an 8 year old who stays up later will have heard the popular refrain "It's not fair!" more than once. In fact, the uprising that can occur when younger ones rebel often causes parents to crumble, allowing their younger children to have more flexible, lax or lenient rules than the ones they had originally conceived of for their older kids. But is this a good idea? Should children one, two, three or more years apart in age have different rules or not? And how can parents handle the "it's not fair" chorus that inevitably arises in households with more than one child?