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Study Confirms Cry It Out Sleep Training Is Safe

Think Cry-It-Out Is Cruel? Here's What Scientists Can Now Confirm

For new parents struggling through yet another sleepless night, the cry-it-out method — in which babies are allowed to cry themselves to sleep — might seem alluring . . . until you research it online and read countless testimonials of fellow moms calling it cruel and swearing it causes permanent emotional damage.

Thankfully, scientists can now assuage your fears with new research that the method is not only effective but that it doesn't cause stress or lasting problems for babies.

The Australian study featured 43 sets of parents with a shared complaint — their babies, ranging in age from 6 months to 16 months, had problems sleeping. Researchers broke the families into three groups. One group, the control, was given no intervention. The remaining two groups were each taught a different strategy:

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  1. Gradual extinction. This form of controlled crying, often referred to as the cry-it-out method, specifically had parents leave the room within a minute of putting their child to bed and slowly extend the amount of time they waited — two minutes before the initial check-in, then four minutes, then six — before going back in to comfort them.
  2. Bedtime fading. This gentler method asked parents to put their infant to bed closer to the time the baby usually fell asleep and to slowly push it farther back each night so their "sleep pressure" built up. The parents could also stay in the room until the child dozed off.

Three months later, researchers found babies in the cry-it-out group fell asleep almost 15 minutes faster than the control group, and babies in the "bedtime fading" group nodded off 12 minutes faster than the control group.

While the study proved that both methods were effective, the cry-it-out group came out on top in terms of total sleep time and instances of a baby awakening during the night.

That's an official endorsement that letting babies cry themselves to sleep is actually effective . . . but is it safe?

According to Michael Gradisar, who authored the study, both sleep-training techniques appear safe in the long-term. One year after the study, babies did not show signs of being more attached to their parents, nor did parents report more behavioral problems compared with those in the control group.

"This is a concern that has been expressed by many parents, which is interesting to me as a scientist, as there is no compelling evidence to support this claim," Gradisar said.

Also worth noting: when it comes to sleep patterns one year after the interventions, babies in all three groups performed roughly the same, which proves no one method leads to better lifelong sleep habits.

According to Gradisar, the results don't pinpoint that one method is better than another. He acknowledges that bedtime fading "is the more preferred technique parents choose when provided both options" — and that, at the end of the day, it's about families finding what's best for them among equally safe options.

"What our data probably do not capture," he concluded, "is the peace of mind surrounding bedtime that we see when we work with families."

Image Source: POPSUGAR Photography / Sheila Gim
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