“tweens and teens present a variant on the toddler’s cycle of testing. They test their curfew, we reassure them that it’s still ten o’clock, and they relax. They test our resolve regarding boy-girl sleepovers, we reassure them that no, we still don’t allow it, and they relax. They test our standards for their behavior, we reassure them that we still expect them to be kind and respectful toward us, and they relax. And the cycle repeats ad nauseam until the teenager gets kicked out of the house or starts college.”