My dd1 has always been a 'handful'. As a toddler she was always on the go, covered in bruises from climbing/bumping/running. She chewed through an electric cable and shocked herself; she climbed up to the top shelf of the airing cupboard and had to be fetched down.
When she was five I took her to be assessed for ADHD with the agreement of her teacher (whose son had ADHD). She was climbing the walls in the waiting room like a trapped polecat, then was perfectly co-operative and meek through the tests!
Now she is 8 and her day-to-day behaviour has me screaming. She will utterly refuse to do reasonable things like getting dressed for school or brushing her teeth. She has no recognition of consequences for her actions whatsoever. If I say "You have to tidy your dolls away or I will take them away for a day" she will ignore me and carry on, then have the screaming abdabs when I do take them away.
I always follow through with what I've said. The rules are always the same.
Yesterday she was at a birthday party at one of those 'soft play' places, all monkey netting and ball pits, and her behaviour was appalling (I heard today from my friend whose dd had the party). DD ran full speed with her younger sister who is only just 3, then swung her round like a rag doll and let go, sending her flying across the hardwood floor. She narrowly missed smashing into one of those 50p kiddie rides on a metal base. DD1 then hid at the end of the party for 15 MINUTES, with DH and my friend (who was waiting to take her three DCs home) shouting her and panicking thinking that she'd got outside or been taken out. All she said when she emerged was 'my leg got stuck' which was the biggest lie in all my life. Again, she did what she wanted and bugger the consequences and bugger everyone else. We get an awful lot of lying too, even over blatantly obvious things.
Every day I try and praise the good and ignore the bad but she doesn't appear to give a shit, to be frank. She wants to do what she wants and seems to think that she will not get punished for it.
Sorry for the long post, I was dismayed when her ADHD assessment didn't pan out because at least we would have had something to work with instead of just being told 'do a reward chart'. We have done enough reward charts to wallpaper the school hall!