Liebs is 7. He knows when he wakes, he is still loved. He is not alone, scared or neglected.

I didn't do CIO. I don't get a full, unbroken night's sleep every night. But it works for us.

My mother did CIO. I don't trust her. At all. She also is very self-serving and lies a lot. But she let me scream and cry and didn't care. She did, however, get to sleep.

Anecdotal evidence, yes. Depends on the aim of cio, both of us would say it works for us.