After having watched the entire season of Roseanne twice over the course of 6 months I have concluded that it was with the introduction of Tom Arnold that began to turn Roseanne into the wretched and miserable pig yenta she became towards the mid to late 90s. It's either that or her late 80s early 90s perm was what was holding in her sanity and as it loosened so did her grip on reality and capability (to) understand normal thinking... it could also have to do with the fact that the later 90s in general sucked a rager.