The fact that people who have unrealistic expectations, such as "I must sleep a full eight hours every night, or I will be unable to function," are more likely to experience insomnia suggests that insomnia is at least partially influenced by:.

Cognition

Explanation:

The fact that they understand how long they need to sleep to avoid insomnia shows cognition; they have acquired knowledge on the sleeping process by experience and knowledge.

a punishment or the threat of punishment used to enforce conformity. enforcement of norms or shared rules of conduct that tell people how to act in specific situations. social control. not everyone internalizes all of society's norms, and some people must be motivated by self-fulfillment.