These are links which have been useful for us. Please do not use any of these as diagnostic tools, only professionals can do that & most kids are too complex for a form anyway!
Coventry Grid (ASD vs Attachment Disorders) here.
Feelings face cards to aid recognition of facial expressions & emotions here.
Incredible 5 Point Scale.
Cerebra DLA guide, a must for those trying to claim for someone with a neurological condition. I'd recommend it to anyone claiming DLA as it explains what is required much more clearly than the DWP guide.