Go to Sleep! What the Research Says About Children, Teens, and Sleep—and How to Foster Healthy Sleeping Habits

Child falling asleep

by David Krasky, Psy.S., Licensed School Psychologist and author of Raising Future Adults

Sleep is one of the most underestimated pillars of child development. In clinical practice, I routinely see children referred for attention problems, anxiety, mood instability, or behavioral outbursts—only to discover that chronic sleep deprivation is a central driver.

The science is clear: sleep is not a passive state. It is an active neurological process critical for emotional regulation, learning, memory consolidation, and mental health.

Yet, between 25–50% of children and up to 40% of adolescents struggle with sleep problems. It hasn't helped that many children and teens have come to rely on their screens to help them fall asleep (or stay asleep).

Let’s examine what the research—and guidelines from the American Academy of Pediatrics—tell us, and how parents can respond effectively.

🧠 The Foundation: How Much Sleep Do Children Actually Need?

The AAP (endorsing the American Academy of Sleep Medicine) provides clear, evidence-based guidelines:

• Infants (4–12 months): 12–16 hours (including naps)

• Toddlers (1–2 years): 11–14 hours

• Preschool (3–5 years): 10–13 hours

• School-age (6–12 years): 9–12 hours

• Teens (13–18 years): 8–10 hours

Children who consistently fall short of these ranges are at increased risk for:

• Attention and learning problems

• Emotional dysregulation (difficulty managing emotions)

• Depression and anxiety

• Behavioral issues (acting out, aggression, opposition, etc.)

• Physical health risks (e.g., obesity, accidents)

👉 In other words: sleep problems often masquerade as psychological problems.

Sleep is developmental. What’s “normal” at one stage may be a problem at another.

Infants & Toddlers (0–3 years)

Baby sleeping

Common Causes of Sleep Disruption:

• Immature circadian rhythms

• Separation anxiety (peaks ~9–18 months)

• Night wakings tied to feeding or comfort

• Inconsistent routines

Clinical Insight:

At this age, sleep is largely biological + attachment-based. A child who cannot self-soothe is not being defiant—they are developmentally dependent.

Preschool & Early Childhood (3–7 years)

Child in bed

Common Causes:

• Fear of darkness or being alone

• Imagination-driven anxiety (“monsters,” “intruders”)

• Bedtime resistance (control struggles)

• Inconsistent sleep routines

Clinical Insight:

This is the age where behavioral insomnia of childhood often emerges—learned patterns reinforced by parental responses (e.g., "Just one more kiss" or "I'll just sleep in their bed tonight")

School-Age Children (8–12 years)

Girl reading in bed

Common Causes:

• Academic stress

• Over-scheduling

• Anxiety and rumination (can be intrusive or obsessive thoughts)

• Increasing exposure to screens

Clinical Insight:

Sleep becomes more cognitively driven—children begin to think themselves awake.

Teenagers

Sleeping teen

Common Causes:

• Biological circadian shift (later sleep cycle) - ask any teenager what they think about start times for school

• Social pressures and autonomy

• Screen use and stimulation before bed

• Academic and social stress

Critical Point:

Teens are not “lazy”—their brains are biologically wired to fall asleep later, yet school schedules often conflict with this reality.

⚠️ The Hidden Culprit: Screens and Sleep

The AAP highlights that screen use:

• Increases alertness

• Delays melatonin release

• Disrupts sleep quality

Even stimulating content alone can impair sleep onset and depth.

👉 This is one of the most modifiable—and impactful—factors in modern parenting.

🛠️ What Actually Works: Evidence-Based Sleep Practices

Across all age groups, the research consistently supports a core set of interventions.

1. Consistency Is Non-Negotiable

• Same bedtime and wake time daily (including weekends)

• Predictability regulates the body’s internal clock

2. Build a Structured Wind-Down Routine

• 20–30 minutes of calming activity before bed

• Reading, quiet music, non-screen activity like puzzles, dim lighting

➡️ This signals the brain to transition into sleep mode

3. Teach Independent Sleep Skills

Children must learn to:

• Fall asleep without parental presence

• Return to sleep independently after waking

👉 This is the single most important long-term skill

4. Optimize the Sleep Environment

• Cool, dark, quiet room

• No screens at least 60 minutes before bed

• Bed used only for sleep (not studying, homework or scrolling)

5. Regulate Daytime Inputs

• Adequate physical activity (at least 60 minutes per day)

• Limited naps (age-appropriate)

• Exposure to natural light

🧩 When Sleep Isn’t Working: What Parents Can Do

Child Can’t Fall Asleep

Common Causes:

• Anxiety

• Overstimulation

• Lack of routine

What Works:

• “Brain dump” journaling (older kids)

• Gradual wind-down routine (read, quieter environment, dimmer lighting)

• Consistent bedtime—even if they “don’t feel tired”

Child Wakes Frequently at Night

Common Causes:

• Sleep associations (needs parent to fall back asleep)

• Anxiety or fear

• Habitual waking

What Works:

• Gradual withdrawal (fade parental presence over time)

• Teach self-soothing skills like breathing exercises or singing to themselves

• Avoid reinforcing wake-ups with excessive attention

Child Refuses to Sleep Alone

Common Causes:

• Separation anxiety

• Fear-based thinking

• Reinforced dependency

Evidence-Based Approach:

Gradual exposure + reassurance (not avoidance)

Steps:

1. Sit near the bed (no interaction)

2. Move progressively farther away each night

3. Reinforce bravery, not avoidance

👉 Avoid:

• Letting the child permanently sleep in your bed (reinforces fear)

• Long emotional negotiations at bedtime

😠 Child Becomes Defiant at Bedtime

What’s Really Happening:

• Overtiredness (paradoxically increases hyperactivity)

• Desire for control

What Works:

• Firm, calm boundaries ("I know going to bed is tough, but your brain needs it")

• Limited choices (“pajamas or teeth first?”)

• Predictable routine

🚨 When to Seek Professional Help

Consider evaluation if:

• Sleep problems persist >3 months

• Severe anxiety or panic at bedtime

• Loud snoring or breathing issues

• Daytime functioning is impaired

💡 Final Clinical Takeaway

If there is one principle I emphasize to parents, it is this:

👉 Sleep is not something you “get”—it is something you teach.

Healthy sleep habits are built through:

• Structure

• Repetition

• Emotional security

• Clear boundaries

And perhaps most importantly:

👉 The goal is not just to help your child fall asleep tonight—but to teach them how to sleep for life. Think of sleep as a life skill that they'll need to be independent adults. Just like learning how to advocate for themselves, solve their own problems, pay bills and take care of their own health and wellbeing.

David Krasky, Psy.S. is a Licensed School Psychologist and author of Raising Future Adults