Sleep Problems in Children: What the Research Says

Sleep problems are among the most
common concerns parents bring to pediatricians —
and among the most significantly undertreated.
Research consistently finds that inadequate
sleep affects virtually every aspect
of child development — cognitive functioning,
emotional regulation, physical health,
and behavioral wellbeing. Understanding
what drives sleep problems in children —
and what the research shows about
addressing them — is practically important
for every parent.

This article covers what the research
shows about sleep problems in children —
what they are, what causes them, and
what evidence-based approaches genuinely help.

How Much Sleep Do Children Need

Research by the American Academy
of Sleep Medicine provides the following
evidence-based sleep recommendations:

Infants (4-12 months):
12-16 hours including naps.

Toddlers (1-2 years):
11-14 hours including naps.

Preschoolers (3-5 years):
10-13 hours including naps.

School age (6-12 years):
9-12 hours per night.

Teenagers (13-18 years):
8-10 hours per night.

Research finding: surveys consistently
find that a significant proportion
of children and adolescents are
not meeting these recommendations —
with school-age children and teenagers
showing the largest deficits.

The Most Common Sleep Problems
in Children

Research on pediatric sleep identifies
several common sleep difficulties:

Difficulty falling asleep. Research
finds difficulty falling asleep —
taking more than thirty minutes
to fall asleep after going
to bed — one of the most common
sleep complaints in children
of all ages. Common causes
include anxiety, screen use
before bed, inconsistent bedtime
routines, and caffeine.

Night waking. Research on night
waking finds that frequent night
waking — waking more than once
per night and having difficulty
returning to sleep — is common
in young children and affects
a significant proportion of
school-age children and adolescents.

Nightmares and night terrors.
Research distinguishes:

Nightmares — frightening dreams
that wake the child, who is
fully alert and can recall
the content. Research finds
nightmares most common between
ages three and six — and associated
with anxiety, stress, and scary
media content.

Night terrors — episodes of
apparent waking with distress —
screaming, thrashing — from
which the child cannot be
fully roused and which they
do not recall in the morning.
Research finds night terrors
most common between ages four
and twelve and related to deep
sleep arousal.

Bedtime resistance. Research
on bedtime resistance finds
it one of the most common
sleep-related behavioral complaints —
children who refuse to go to
bed, who get up repeatedly,
or who require extended parental
presence to fall asleep.

Sleep anxiety. Research on
sleep and anxiety finds that
anxiety about sleep itself —
worry about not being able
to sleep, fear of the dark,
separation anxiety at bedtime —
is a common driver of sleep
difficulties in children.

Early morning waking. Research
on sleep architecture finds
that early morning waking —
waking significantly before
the desired wake time and being
unable to return to sleep —
is a common sleep difficulty
associated with anxiety and depression.

What Causes Sleep Problems in Children

Research on pediatric sleep difficulties
identifies several common causes:

Anxiety. Research consistently
finds anxiety the most common
cause of sleep difficulty in
children — including difficulty
falling asleep, night waking,
and nightmares. The quiet of
bedtime removes the distractions
that manage anxiety during
the day — leaving worry to
dominate.

Screen use before bed. Research
on screens and sleep finds
that screen use in the evening —
particularly engaging content —
disrupts sleep through blue
light suppression of melatonin
and psychological arousal that
delays sleep onset.

Inconsistent bedtime routines.
Research on sleep routine and
sleep quality finds that inconsistent
bedtimes and inconsistent bedtime
routines significantly disrupt
sleep — because the body’s
circadian rhythm depends on
consistency to function optimally.

Caffeine. Research on caffeine
and pediatric sleep finds that
caffeine — in sodas, energy
drinks, tea, and chocolate —
significantly disrupts sleep
in children. Research finds
that children are significantly
more sensitive to caffeine than adults.

Environmental factors. Research
on sleep environment and sleep
quality finds that noise, light,
temperature, and bedroom comfort
significantly affect sleep quality.
Research supports a cool, dark,
quiet sleep environment.

ADHD. Research on ADHD and
sleep finds that sleep difficulties
are significantly more common
in children with ADHD — affecting
up to seventy percent of children
with ADHD. Both falling asleep
and staying asleep are affected.

Underlying medical conditions.
Research identifies several
medical conditions associated
with pediatric sleep difficulty —
including sleep apnea, restless
legs syndrome, and gastroesophageal
reflux. When sleep difficulties
are severe and persistent —
medical evaluation is warranted.

What the Research Shows Works

Consistent bedtime routines.
Research on bedtime routines
and pediatric sleep consistently
finds that a consistent, calming
bedtime routine — the same
sequence of activities each
night — significantly improves
sleep onset and sleep quality
across all ages.

Research-supported bedtime
routine elements:
A consistent bedtime — the
same time every night including weekends.
A winding-down sequence —
bath, pajamas, teeth brushing, reading.
Calm, low-stimulation activities —
not screens, not exciting play.
Warmth and connection — reading
together, brief conversation,
expression of love.
A consistent end point —
lights out at the same time each night.

Screen-free time before bed.
Research on screens and sleep
consistently finds that screen-free
time of at least one hour before
bed — allowing melatonin production
to increase — significantly
improves sleep onset and sleep quality.

Screens out of bedrooms. Research
on bedroom screens and sleep
quality is among the most consistent
in the field — bedroom screens
disrupt sleep even when not actively being used.

Addressing anxiety. Research
on anxiety and sleep finds
that addressing the underlying
anxiety — through the approaches
described in other articles
in this series — significantly
improves sleep. Brief, calm
worry time earlier in the evening —
before the bedtime routine —
can help children process worries
before they reach the bedroom.

Graduated approaches for bedtime
resistance. Research on behavioral
interventions for bedtime resistance —
including the extensively researched
graduated extinction approach —
finds that gradually reducing
parental presence at bedtime —
over one to two weeks — significantly
reduces bedtime resistance.

When to Seek Professional Support

Research supports seeking professional
assessment when:

Sleep difficulties are significantly
impairing daytime functioning —
academic performance, emotional
regulation, behavior.

Sleep difficulties are not
responding to consistent behavioral
approaches over two to four weeks.

You suspect an underlying condition —
sleep apnea, restless legs,
significant anxiety — is contributing.

The child is showing signs
of significant sleep deprivation —
falling asleep at school, extreme daytime fatigue.

Try This This Week

Practice 1 — The Bedtime Routine Establishment
What it is: A deliberate establishment
of a consistent calming bedtime
routine — the most evidence-based
sleep intervention available.

How to do it: This week establish
a specific, consistent bedtime routine:

Choose a specific bedtime —
appropriate for your child’s age.
Create a consistent sequence —
bath, pajamas, teeth, reading, lights out.
Screens off at least one hour before bedtime.
Keep it calm and warm —
reading together, brief conversation, expression of love.
Hold it consistently — including weekends.

Why it works: Research on
bedtime routines and sleep quality
consistently finds that consistent
calming bedtime routines —
held every night — significantly
improve sleep onset time and
sleep quality across all ages.

Practice 2 — The Bedroom Screen Removal
What it is: A clear consistent
rule that screens charge outside
the bedroom — the most evidence-based
bedroom sleep intervention.

How to do it: This week remove
screens from your child’s bedroom —
or establish that devices charge
in a common area overnight:

Choose a specific charging location.
Choose a specific time devices
go to the charging location.
Hold it consistently — for
all family members.

Why it works: Research on
bedroom screens and sleep quality
is among the most consistent
in the field — removing screens
from bedrooms produces significant
and measurable improvements
in sleep duration and quality.

Practice 3 — The Worry Time Practice
What it is: A brief designated
worry time — earlier in the
evening — helping anxious children
process worries before the bedroom.

How to do it: For children
whose sleep difficulty is driven
by anxiety — establish a brief
worry time earlier in the evening —
at least one hour before bed:

“Let’s have our worry time now.”
Child shares worries — briefly
and specifically.
Parent acknowledges and helps
problem-solve where possible.
“Now worries are done for
tonight — we’ll think about
anything else tomorrow.”

Why it works: Research on
worry and sleep consistently
finds that anxiety-driven sleep
difficulty is significantly
improved by designating a specific
worry time earlier in the day —
containing worry to a specific
time and preventing it from
dominating the bedtime period.

The Bottom Line

Sleep problems in children
are common, significantly impactful,
and — in most cases — highly
responsive to consistent evidence-based approaches.

The research is clear: consistent
calming bedtime routines; screens
out of bedrooms and screen-free
time before bed; addressing
underlying anxiety; consistent
bedtimes including weekends;
and a cool dark quiet sleep
environment — together produce
significant improvements in
children’s sleep.

Adequate sleep is not a luxury —
it is a developmental necessity.
The child who sleeps well thinks
better, regulates emotions better,
behaves better, and is physically
healthier. Investing in sleep
is one of the most important
investments in child development available.

Sources

American Academy of Sleep Medicine.
(2016). Recommended amount of
sleep for pediatric populations.
Journal of Clinical Sleep Medicine,
12(6), 785–786.

Mindell, J. A., & Owens, J. A.
(2015). A Clinical Guide to
Pediatric Sleep.
Lippincott Williams & Wilkins.

Czeisler, C. A. (2013).
Perspective: Casting light on
sleep deficiency.
Nature, 497(7450), S13.

Sadeh, A., Gruber, R., & Raviv, A.
(2003). The effects of sleep
restriction and extension on
school-age children.
Child Development, 74(2), 444–455.