I haven't got a dx for DS so please forgive me posting on here. He shows many ASD traits and I am waiting for a referral, so I think its only a matter of time before we join the club, wink. I'm at my wits end with him withholding his poo and wonder what strategies have worked for other people. DS has a huge vocabulary and is quite capable of arguing the hind leg off a donkey. He uses logic so well when he wants something, but still cannot accept the logic of not withholding his poo. I keep trying to help him understand but clearly its the wrong approach. I need new ideas. Tonight I got a bit weepy and had to go out of the room when he 'sent it back' whilst actually sitting on the loo. sad.