Let me first clearly state that I have never let LO CIO. It breaks my heart when she cries. I just want to do everything in my power to stop it.
With that out of the way I am just curious about CIO. What is the harm? What's the point in letting LO CIO? And my big question is when you are in a car and LO is screaming and you can't pull over what's the difference in CIO in the car vs the house? I know when you're in the house you are choosing to let baby cry & when you're in the car you don't have a choice but LO doesn't know the difference... I have yet to drive anywhere with her on my own. My husband takes us places and I sit in the back seat with her. She still cries but at least I'm there to try to comfort her.
And again, NOT letting her CIO! Just curious about why this topic is so taboo and what kind of "harm" does it cause the baby.
Re: New crying question
If you are in the car you can still talk to your baby and interact with your voice. They are not left alone to self soothe. You are still interacting with them.
The harm in letting an young infant CIO is that the only thing they learn is that no one is coming to meet their need so why cry. This is not healthy.
It's called neonatal glucocorticoid neurotoxicity and it literally harms brain cells. Doesn't seem like something you want to risk when your baby is building neural connections at such a rapid rate.
ETA: hit post too soon. Even if they were able to self-soothe, why would you want them to devote any energy to that at this young age? They should be paying attention to the sound of a crackling leaf, how the sun feels on their skin, the color of the sky, etc. rather than trying to calm themselves.
LFAF Summer 2016 Awards:
I have located one study, in which infants were taken to a sleep lab and allowed to CIO. When Cortisol levels were tested they remained elevated hours/days after they had stopped crying. However, the infants were in the unfamiliar sleep labs the whole time. Therefore, the results are anecdotal at best and really only prove that infants remain atressed when in a unfamiliar environment.