Fear of the dark and bedtime worries: what the research says about night-time fears in young children

It often starts around three or four: the hallway light must stay on, the wardrobe door must be shut, and someone — someone with authority — needs to check under the bed. For tired parents at the end of a long day, night-time fears can feel like one more bedtime negotiation. The research suggests a kinder reading: your child's imagination has just come online, and it doesn't have an off switch yet.

Just how normal are night-time fears?

In one of the most detailed studies of the topic, Peter Muris and colleagues interviewed 176 children aged 4 to 12 and their parents. Nearly three quarters of the children — 73.3% — reported night-time fears, making them one of the most common fears of childhood, already frequent in the 4–6 age band.¹ Two details from that study deserve a spot on the fridge. First, parents substantially underestimated their children's night-time fears — many children were more scared than their mums and dads realised. Second, the most commonly reported origin of the fear wasn't a bad experience; it was scary information and images the child had picked up, largely from television.¹

This fits the broader developmental picture. Eleonora Gullone's century-spanning review of normal fear shows fear of the dark and imaginary creatures arriving on schedule in the preschool years, and — reassuringly — shows that specific fears are largely transitory, fading in number and intensity as children mature.² For where this sits in the wider map of childhood worries, see our companion guide to what's developmentally normal and when to ask for help.

Why the dark, and why at this age?

The preschool brain has just acquired imagination — the ability to represent things that aren't present — without yet acquiring a reliable boundary between imagined and real.² Add darkness, which removes the visual information a small child uses to check that the world is as it should be, and subtract the parent, who is in another room, and you have a perfect storm: maximum imagination, minimum information, and no co-regulating adult within arm's reach.

The strongest evidence: a consistent bedtime routine

If there is one intervention with an outsized evidence base here, it's the least glamorous one. Jodi Mindell and Ariel Williamson's review in Sleep Medicine Reviews assembled the evidence that a consistent nightly bedtime routine — the same calm steps, in the same order, at roughly the same time — supports not just faster sleep onset and fewer night wakings, but a surprising breadth of outcomes: emotional and behavioural regulation, language development, literacy and parent–child attachment.³

The routine components they identify are refreshingly ordinary: a bath or wash, teeth, a story or lullaby, and physical closeness — a cuddle, not a production number.³ For a fearful child, the routine does double duty: it is both a sleep aid and an anxiety intervention, because a predictable sequence tells the child's threat system exactly what happens next. (That mechanism — why predictability itself is calming — is the subject of our article on routines and the science of knowing what comes next.) Australian guidance from the Raising Children Network makes the same recommendation: a consistent bedtime routine with quiet time before bed is the first-line response to most preschool sleep struggles.⁶

Teddy has a job: security objects and the Huggy Puppy studies

One of the most charming findings in the paediatric sleep literature comes from Jonathan Kushnir and Avi Sadeh, who tested brief interventions for night-time fears in preschoolers. Children were given a stuffed puppy and a story: the puppy was sad and scared, far from home, and needed someone to hug him and keep him safe at night. Children who took on the caregiving role showed significant reductions in night-time fears and sleep disruptions — improvements still present at six-month follow-up.⁴

The clever part is the role reversal. The child stops being the frightened one and becomes the protector — which recruits exactly the sense of agency that fear takes away. A security object isn't a crutch to be phased out; at this age it's a developmentally appropriate tool, and giving it an explicit job ("Bunny is nervous about the dark — can you look after him tonight?") turns a comfort into a strategy.

Gradual approaches that respect the fear

For fears that need more than a routine and a teddy, the evidence-informed path is gradual: small, supported steps toward independence rather than a single leap. That might mean a dimmer switch turned down a notch a week, or sitting by the bed, then by the door, then in the hallway over a fortnight. Rehearsal in daylight helps too — talking or reading about bedtime while the sun is up lets a child practise the feelings at low intensity. It's the same narrative-rehearsal mechanism behind Social Stories, and it's why a personalised story about this child being brave in their own bed at night — the kind Little Narratives builds — can gently pre-load the script a child reaches for when the light goes out.

What makes night-time fears worse

• Scary content, even mild. Remember the Muris finding: the most common self-reported origin of night-time fears was frightening information and images, largely from TV.¹ A show that's fine at 10am can resurface at 7pm.
• Dismissing or mocking the fear. "There's nothing there, don't be silly" gives the child neither information nor comfort — and teaches them not to tell you next time. Australian guidance is consistent: acknowledge the feeling, then reassure.⁵
• Over-accommodating it. Elaborate monster-spray rituals and hour-long check-ins can quietly confirm that the bedroom is dangerous territory requiring special defences. Calm, brief, boring reassurance beats escalating ceremony.
• An erratic schedule. Late, variable bedtimes strip out the predictability that was doing quiet anti-anxiety work.³

Fear of the dark is one of the oldest and most reliably outgrown fears humans have. With a boringly consistent routine, a teddy with a job description, and a parent who takes the fear seriously without treating it as an emergency, most children walk out of this stage on schedule — and a little prouder of themselves for it.