ProbeMaster

I've been nannying for two kids. The 4 year old shows many signs of (mild) autism--he can speak, but he often repeats what he hears with no apparent understanding of what he's saying. he likes stacking things and turning lights on and off, as well as things that spin. He tends to focus on one thing, blemish, or toy and can't get his mind off of it. My question is, do any of you have experience with kids (or adults) diagnosed? How do they act? And, most importantly, would you tell the parents your suspicions in the hopes that he could get better treatment (they, quite delusionally in my opinion, think he is gifted and are very privileged). Do you think autism "treatment" is beneficial, or is