I"m not sure where I heard this term -- something in relation to personality traits or something. Some kids are high/low energy, some quick to join the action and some have a negative first response to new situations.... I think it was something along those lines. My DS (5.5 yo) seems to have a negative response to any request I make of him. Let's clean up -- no. Let's do this or that -- no. Unless it is phrased in the "as soon as we do --X-- we can go to the park, cousin's house, watch a video, etc..." But I don't always have a next situation to move into and it bothers me that there always has to be a payoff for him to join in. And sometimes it seems like he's just saying no out of habit and once he realizes that it is more fun to join in, then he does. He just seems stuck in the NO. Anybody else been there? It strikes me more and more as a personality thing because my DD is similar but my other DS, (2.5) is so happy to say yes and do anything with anybody anytime~ I want to keep it fun and happy but I also don't want a "No" everytime I make a simple request.