When I stopped by to visit my sister’s family, my nephews eagerly showed me their new chore system, a set of Choropoly boards. Each colorful electronic board keeps track of their chores. A job well done means the kids can hit a green button, which adds points to their “spending” account. A misdeed like leaving the back door open results in a fine being deducted from the total. Since a high-points total leads to exciting rewards such as computer time—and misdeeds deduct from that total—my nephews are now unusually motivated to do their work and to keep the door closed!

The ingenious…