The Truth About Sleep Training and Attachment: Debunking Social Media Myths

If you've spent any time on social media as a new parent, you've likely come across alarming posts about sleep training — claims that it harms your baby's attachment, damages their nervous system, or causes irreparable hard to their brain. With so much conflicting information circulating online, it's hard to know who to trust. But what does the research actually say?

In a recent interview, Dr. Maureen McQuillin, a pediatric sleep psychologist at Riley Hospital for Children in Indianapolis and Assistant Professor of Pediatrics at Indiana University School of Medicine, sat down to help parents cut through research from rumor to find clarity. Dr. McQuillin splits her time between seeing patients in a pediatric sleep clinic and conducting research — giving her a unique perspective on both the science and the real-world challenges families face.

Mom kissing daughter on the cheek while she sleeps.

The Truth About Sleep Training and Attachment

One of the biggest fears parents have is that sleep training will damage their bond with their child. This myth is being actively spread on social media, sometimes by accounts with hundreds of thousands of followers. In fact, during our conversation, Dr. McQuillin flagged a post claiming that the American Academy of Pediatrics advises against sleep training before one year due to attachment and nervous system harm. That is simply not true.

What large, well-designed research studies actually show is that there are no long-term effects on attachment when children learn to self-soothe. Any distress experienced during sleep training is temporary — and the long-term benefits for both child and parent are significant.

"It might cause a temporary moment of distress," Dr. McQuillin explains, "but the research suggests really great long-term outcomes and no long-term damages."

Tolerable Stress vs. Toxic Stress

A helpful framework Dr. McQuillin uses with families is understanding the difference between tolerable stress and toxic stress. Not all stress is harmful — in fact, some stress builds resilience.

She uses the analogy of a car seat: many babies hate being strapped in and cry every time. But no parent would skip the car seat just because their child is upset. The temporary discomfort is worth the long-term safety.

Toxic stress, by contrast, involves consistent, repeated neglect or harm over time. Sleep training — which typically involves around 45 minutes of crying on the first night and resolves within three to four nights — does not meet that threshold. It is a short-term challenge with long-term rewards. Parents can give comfort and support to their child as they learn how to fall asleep on his/her own.

Sleep Training Isn't Just "Cry It Out"

Many parents equate sleep training exclusively with the cry it out method, but that's just one of several approaches. Dr. McQuillin outlines three evidence-based options so families can choose what works best for them:

1. Extinction Method (Cry It Out) You put the baby down drowsy but awake, say goodnight, and leave the room. This is the fastest method but can be emotionally difficult for parents.

2. Check-In Method You put the baby down and leave, but return at regular intervals — every five minutes or so — to reassure them. This gives both parent and child a chance to reset while still working toward independent sleep.

3. Gradual Fade (Camp Out Method) You slowly reduce your involvement over time. If you currently rock your child to sleep, you might move to just holding them, then sitting beside the crib, then sitting by the door, then stepping just outside. This gentle sleep training method tends to work especially well for toddlers who are no longer in a crib while teaching them to stay in bed.

All three approaches train independent sleep skills. They simply vary in how quickly they work and how much crying is involved. There is no single right answer…the best method is the one your family can actually follow through with consistently.

Why Independent Sleep Skills Matter

Understanding why we sleep train helps parents stay motivated when things get hard. Dr. McQuillin explains that night wakings are completely normal — for babies and adults alike. We all cycle through stages of sleep and have brief moments of waking. The difference is that adults can roll over, adjust their pillow, and drift back off.

When a baby has been rocked, nursed, or bounced to sleep every night, those things become their sleep associations. When they wake at 2am, they need those same conditions to fall back asleep — and that means waking a parent every single time.

"You are the pillow in this situation," as Tina Hanson, MS, BCBA, sleep specialist, puts it. Teaching your child to fall asleep independently means that when they wake in the night, they can self-soothe and drift back off without needing you — which means more sleep for everyone.

The Impact of Sleep Deprivation on the Whole Family

Poor sleep doesn't just affect your child. Dr. McQuillin's own research found that when mothers weren't sleeping well, it directly impacted their warmth, responsiveness, and positive parenting behaviors — even after accounting for stress levels. This was measured not through self-reporting, but through direct observation of mother-child interactions in the lab and at home during bedtime routines.

Across the board, sleep deprivation affects three key areas:

• Learning and memory — Sleep is critical for cognitive development and brain function

• Emotional regulation — Poor sleep leads to bigger mood swings, tantrums, and difficulty managing feelings

• Physical health — The immune system, growth, and digestive health are all impacted by sleep quality

  
  

One important note for parents: tired children don't always look tired. While adults yawn and slow down, sleep-deprived toddlers often become hyperactive, bouncy, and emotionally dysregulated. If your child seems wired at bedtime, they may actually be overtired and have missed their ideal sleep window.

Practical Tips: The Excuse Me Drill

One technique that Dr. McQuillan and Tina highlight that works particularly well for toddlers is called the "Excuse Me Drill", initially developed by Dr. Brett Kuhn. Here's how it works:

Once your child is in bed, you begin making brief departures from the room with a simple excuse — "I'm just going to grab my water bottle" or "I hear dad calling, I'll be right back." The key is to return before your child gets out of bed to look for you.

When you return, praise them enthusiastically: "You stayed in your bed! You were so brave!" This builds trust , your child learns that you always come back, while gradually increasing their tolerance for being alone. Over time, the departures get longer and eventually you are no longer needed in the room at all.

Every Child Is Different — And That's Okay

One myth Dr. McQuillin is passionate about addressing is the pressure and comparison culture around baby sleep. Social media is full of parents sharing that their baby sleeps through the night, leading other parents to feel like they're failing.

The truth is that children have different temperaments. Some babies are naturally easy sleepers. Others, due to temperament or medical reasons, are genuinely harder to settle,  and that is not a reflection of your parenting.

"It's okay to acknowledge that kids are different," Dr. McQuillin says. "And regardless of what your child is like or how you've gotten here, there are evidence-based strategies that can safely help your child improve."

Frequently Asked Questions About Sleep Training

Does sleep training harm attachment? No. Research from large, well-controlled studies shows no long-term negative effects on attachment.

What age can I start sleep training? Most sleep specialists recommend starting between 4 and 6 months, once a baby is developmentally ready. The American Academy of Pediatrics recommends that babies under 12 months sleep alone, on their back, in a crib or bassinet, while sharing a room with his/her caregiver.

How long does sleep training take? Most families see significant improvement within three to four nights, regardless of which method they use.

Is cry it out the only sleep training method? No. There are several approaches including the check-in method and gradual fade that involve much less crying and may be a better fit for your family.

What if my toddler won't stay in bed? The gradual fade and excuse me drill are both effective techniques for toddlers who are out of a crib and need a gentler, more gradual approach.

The Bottom Line

If you are exhausted, struggling, and feeling judged for whatever choices you've made so far — you are not alone and you are not doing anything wrong. Sleep challenges are incredibly common, and the good news is that effective, evidence-based help exists.

Whether you choose a faster or gentler sleep training approach, the goal is the same: a well-rested child and a well-rested parent. And according to the research, getting there is not only possible — it can be genuinely life-changing.

Have questions about sleep training or want personalized support? Reach out or explore more resources on evidence-based pediatric sleep.

Click here to learn more about Maureen E. McQuillan, PhD.

Watch the full interview to hear Dr. McQuillin separate research from rumor and for practical tips to use with your child.