Here’s a lovely, lovely post from Ask Moxie on a recent study that looked at sleep interventions and their effects after a few months and a few years.
What it showed was that parents who chose controlled crying or other interventions for their own specific babies felt better about how their babies were sleeping after doing those interventions and felt better about themselves. In other words, controlled crying doesn’t do harm to babies and parents when the parents think it will work and try it.
I think this study says way more about how beneficial support for trusting your instincts about what your specific child needs is than it does about any specific sleep intervention.
Do what works, people. Do what works. Science says it’s ok.