'I'd like to fund a full ABA programme for DS2, here's a blank cheque'
Take it, Take it! - and give it to me - yay!
You know, what you say makes a lot of sense. How on earth would you 'fit' ABA into his life on top of all the things that you, as a knowledgable, consiencious, thinking parent have arranged to meet his needs well already?
It would be crazy and disruptive to have a big overhaul of his current 'programme' when you are getting results.
The thing is though. You (and I know you well enough to know this is true) spend a lot of time thinking about what your children need and when, and you evaluate what is working and are open to alternatives and ideas which you then evaluate and test. Your methodology is quite analytical for someone NOT collecting data and evidence.
In fact, a good number of MNers are the same. They see good results without having to embark on an ABA programme because of the sheer amount of work and energy they put into assessing and reassessing their children's needs and researching the solutions. It is possible to have extremely good outcomes this way and it happens. I would be brave here and suggest that it is the careful analysing of need and solutions coupled with the demand for a level of accountability that makes a programme successful. It's what makes ABA successful.
The trouble is though, that ABA is the alternative to ill-thoughtout 'crap' quite often that is full of illusion and 'referrals', and 'support' and 'observations' and 'reports' and a whole host of other things that have no direct benefit for our children.
How on earth would you say 'no thank you, your nursery and that 1:1, with targetted support won't meet his needs, so I want a differnet nursery with a different 1:1 with targetted support as that will meet his needs.' To make that argument you need to have evidence and data that illustrates the difference. Pretty much neither setting will keep data. But ABA methodology taken into those settings will be able to show which 'arrangement' will ensure that your ds makes progress.