mine going through 'oppositional' phase...
am trying to phrase things diferently e.g 'mummys tidying up, what a good mummy!' rather than 'tidy up' works better...
and my personal favourite 'come and help mummy wee'.
also trying to keep in mind the next stage eg. 'shoes on so we can go to the park' and to leave the park 'lets go home for a drink', and then...'lets finish our drink so we can do scribbling' etc...
i have in the past used time out (which works for 18mo's too because it stops them from doing whatever, though as my cot is in the room they would probably remember too why they were there) though this doesn't work when yo want them to do something.
if it is something that doesn't need to happen now, then if she doesn't comply, then normally just saying 'oh well nevermind' works, because she'll decide to do it...(particularly effective where it is something she would normally want to do and she is just mucking about for the attention)
anyway, time to read through and see what other cunning ploys i can use, DD is a clever one and eventually sees through my ruses...
counting works less well as DD jsut waits until 3 then stops mucking around, (but then expects me to be nice about it)