Thalia suffers from insomnia. She tries everything, and she finally develops the habit of counting backward when she wants to sleep but cannot. Thalia finds that she falls asleep much easier once she...

Thalia suffers from insomnia. She tries everything, and she finally develops the habit of counting backward when she wants to sleep but cannot. Thalia finds that she falls asleep much easier once she starts counting backward, so she continues to do so. ________ theory suggests that she continues this habit because it results in homeostasis.