Sleep training approaches

What is actually being trained

Every approach shares one goal: helping a baby learn to fall asleep on their own. Night waking never disappears; all of us surface several times a night. The difference lies in what happens next. A baby who fell asleep in arms, or at the breast, looks for those same conditions at 2am and calls for them.

Where the approaches part company is how long they leave a baby to try that on their own.

Graduated checking (Ferber)

Your baby is put down awake. When crying starts, you go in at set intervals, settle briefly with voice and touch rather than picking up, and lengthen the intervals over the following nights.

Who it tends to suit: families who want a clear structure, can absorb a few intense nights, and can stay consistent through them. It usually comes up after around four to six months.

The chair method

You sit beside the cot and stay in the room until your baby is asleep. Every few nights the chair moves a little closer to the door, and eventually out of the room altogether.

Who it tends to suit: parents who do not want to leave the room at all but do want the habit to change. The cost is time — it can take weeks, and for some babies a parent in sight is stimulating enough to stretch the process out further.

No-cry approaches

This heading covers no single method. The shared idea is to change how a baby falls asleep gradually, without leaving them to cry. The tools are a steady bedtime routine, watching awake windows, putting your baby down before they fully drift off at the breast or bottle, and reducing the help you give a little at a time.

Who it tends to suit: families who do not want to sit through crying, and younger babies. The criticism is that results are slow and uncertain, and that prolonged parental exhaustion is itself a real cost.

Full extinction

Your baby is put down and you do not go back in until morning. It is the fastest approach on paper and the hardest to carry out. Many families stop partway through the first night, and a half-finished attempt teaches the opposite lesson: that crying works if it goes on long enough.

What the evidence says, and its critics

Studies of these methods are mostly small and short. What they show is fairly consistent: behavioural approaches shorten the time it takes to fall asleep and reduce night waking in the short term, and follow-up studies have not shown harm to attachment or behaviour in the children who were tracked. They also show that the advantage narrows over time — a few years on, the difference between trained and untrained children is hard to find.

The counter-argument is that most of these measurements rest on parent reports, and that a baby's own stress during the process is rarely measured directly. Both positions are internally coherent, which is exactly why we are not putting one of them forward here.

Your call

Sleep training is not a stage anyone has to pass through. Plenty of families come out the other side of this year without trying any of it. The more useful question is probably not "which is best" but "what could we actually sustain in this house": how depleted the adults are, how old your baby is, and whether the plan is one you can stay consistent with.

When to see a doctor

• There are pauses in breathing, snoring or effortful breathing during sleep
• Sleep problems come alongside slowed weight gain or reduced feeding
• Your baby seems to be in pain rather than protesting at night
• You feel persistently flattened, hopeless or angry — that belongs in a conversation with a clinician too
• You want to be sure nothing physical is going on before you start any approach

In an emergency, call your local emergency number.

Sources

• American Academy of Pediatrics (AAP) — information on infant sleep and behavioural sleep approaches
• NHS (UK) — guidance on infant sleep problems
• Cochrane reviews — assessments of behavioural interventions for infant sleep
• Ministry of Health of Turkiye — infant and child follow-up guidance