Behavior: A Focus on Sleep
Sleep is a fundamental aspect of human health, directly impacting various physical, mental, and
emotional processes. Yet, many individuals struggle with obtaining adequate sleep, which can
have wide-reaching effects on their health and well-being. The 2006 Institute of Medicine (IOM)
report on Sleep Disorders and Sleep Deprivation underscores the significance of sleep, noting
that the average adult requires 7 to 8 hours of sleep per night, while adolescents need 9 hours.
Despite this, reports indicate that more than 35% of adults get less than 7 hours of sleep, and
nearly 70% of high school students report getting insufficient sleep on weeknights (Perry, 2013).
Furthermore, approximately 15 million children in the United States do not get enough sleep.
Sleep deprivation has been linked to numerous negative outcomes, including impaired cognitive
function, mood disturbances, and an increased risk for chronic conditions such as obesity,
diabetes, and cardiovascular disease. By understanding the influence of different levels in the
Social-Ecological Model (SEM), we can identify various factors that affect sleep and develop
strategies for improving sleep behaviors at different levels of influence.
The Intrapersonal Level: Internal Factors Influencing Sleep Behavior
The intrapersonal level of the Social-Ecological Model refers to individual characteristics,
including biological, psychological, and cognitive factors that influence health behavior. At this
level, several factors can negatively affect sleep behavior, often stemming from the individual’s
own mental state and physical health.
Stress and Anxiety are among the most common internal factors that disrupt sleep. When
individuals experience stress, particularly chronic stress, the body produces cortisol, the "stress
hormone," which can make it difficult to relax and fall asleep. Anxiety can lead to overthinking,
causing individuals to stay awake at night, ruminating on past events or worrying about future
ones. This can create a vicious cycle: the lack of sleep due to stress and anxiety exacerbates the
individual’s mental state, leading to even more stress the next day.
For instance, a person who has experienced a traumatic event may find it difficult to fall asleep
or stay asleep due to heightened anxiety levels. Over time, this can lead to chronic sleep
deprivation, resulting in more serious mental and physical health issues.
In addition to anxiety, poor sleep hygiene is another factor that affects sleep at the intrapersonal
level. Sleep hygiene includes habits and practices that can either support or disrupt sleep.
Examples of poor sleep hygiene include using electronic devices before bed, consuming caffeine
or large meals late at night, and having an inconsistent sleep schedule. Many individuals
unknowingly create habits that are not conducive to sleep, such as watching television or using
their smartphones right before going to bed. These habits can delay the onset of sleep and
decrease sleep quality.