No. No. Just no.
No clicker training for human children.
No.
Children learn their values from us, their parents.
It might perhaps be easy for me to say that because I'm a nice and good and kind person so my children have learned that from me.
I've not had an easy ride because one of my children has quite severe special needs, so we are not exactly a normal family. Nobody in the house slept for more than 3 hours at a time because of the hyperactivity of our SN daughter. I seriously doubt that clicking a clicker at her would have encouraged her to go to sleep.
We had to make sure our NT daughter was not disturbed by her sister because she had to have a night's sleep and go to school etc.
So they could not share a room, not even an adjacent room because our SN child kicked up a rumpus all night.
I think I went about 30 years on 2 hours sleep a night.
She's in supported living now she's 35. And worrying about her still keeps me awake. What pisses me off greatly is that now she's not actually in the house, I still lay awake worrying about her.
Anyway, bells or whistles or clickers. Nope.
That's for dogs. Not your children.