My daughter was about 26 or 27 months and showed no interest whatsoever in the potty, despite being highly verbal and very intelligent. She didn't mind being in a wet/poopy nappy either, although she was aware of when she was pooping (not so much with weeing though). What we did was to just set aside 2 hours every morning to have her run around the house with no nappy on and of course for the first couple of days she peed all over the place, but after a couple of days, she started to want to use the potty (we bribed her with M&Ms). It only took her a couple of weeks until she was almost completely day time potty trained. Now even when we go out, she just wears undies - except if we won't be around a toilet (or we don't know where they are) for a couple of hours. She even wakes up dry most mornings - although I'm not in a hurry to put her in undies at night! I was amazed at how easy it was for her, even though she wasn't initiating it or showing signs of being interested!