Yes they are, I have children spirits in my house... My 3 yr old used to play "ring around the rosey" with a little girl he called Bridget. He then told us how she died (he said she was shot). Could be a child's imagination but that is quite specific for a 3 yr old lol
We have had a lot of experiences in my house... I have had "experiences" since my last wife passed away also but I do think she has moved on and visits us occasionally, she does watch over her kids though... I have a ton of stories lol... The kids make it 100% believable with what they experience.
You probably think I'm nuts but why would I lie to you? What would I have to gain?