Before leaving her home, Margaret makes sure that every electrical appliance is unplugged and checks that every window and door is securely locked. She checks everything 17 times according to a strict ritual that she has worked out. If she misses one window, door, or appliance, she must begin all over again. If she tries to skip any step of the ritual, she experiences unbearable anxiety. In this example, Margaret's behavior of checking the locks and outlets are _____.