Which of the following methods is part of stimulus control therapy?

The method of restricting bed use to sleep only is a fundamental component of stimulus control therapy, which is designed to strengthen the association between the bed and sleep. By limiting the activities that occur in bed, such as watching television or working, individuals learn to associate their bed specifically with sleep. This helps reduce insomnia and enhances sleep quality by creating a stronger mental link between being in bed and falling asleep.

In contrast, using sleep aids daily could lead to dependence on medication for sleep, which does not address the underlying behavioral patterns contributing to sleep problems. Increased screen time before bedtime tends to disrupt sleep by exposing individuals to blue light, which can inhibit the production of the sleep hormone melatonin, making it harder to fall asleep. Encouraging napping during the day can interfere with the body's natural sleep-wake cycle, potentially leading to difficulties in falling asleep at night. Thus, the focus of stimulus control therapy is to enhance the conditions surrounding sleep itself, rather than introducing factors that could confuse or disrupt that process.