have just instituted this for v. strong willed 4 yo DD1; started her off with 10 bits, told that when she gets to 25 she can have a small treat. So one in for good things: doing as she's asked first time, eating dinner tidily (not eating dinner per se) etc. One out for bad things: not doing as she's told, making a mess, pouring drinks etc. Extra ones for good behaviour (being nice to sister, hoovering etc); extra ones out for bad behaviour: hitting, mainly (which she hadn't been doing for a while, but that's a different issue).
It kind of worked today, but I don't think she cares about it that much, and wonder if I can incentivise her once the novelty has worn off.
My problem is that she does not accept the relationship between action and punishment. So, she pushes sister. I tell her no tv. She loses the plot and tries to go back on the bad behaviour. I usually repeat the punishment and why it has happened and then tell her that the discussion is over. If she cries and carries on then I ignore her. But we have been at this for about 18 months now. I know she can behave really well and can do so for weeks at a time.
Tips, ideas? If it's any help she was 4 about 3 weeks ago, so is only just 4. She behaves well at nursery.