Kaufman says Rousey is presenting herself in an unprofessional manner and that she is coming across like a young, teenage girl.
"Ronda is very emotional and she does kind of have that bratty edge to her, where she says what she thinks all the time and seemingly takes offense to a lot of things," Kaufman said of Rousey. "She's not coming off very professionally. She's coming off as a very young, almost teenaged girl, where she's actually 26 years old.
"I know that a lot of pressure is being put on Ronda to live up to all the hype, and so far, I think that she's done it quite gracefully, but we're starting to see a little bit more of who she is as a person, and I think that it's not coming across as well as it could, for sure. She definitely has a lot of attitude."
Kaufman said that Rousey's rival, Miesha Tate, has presented herself in a much better light.
"I think that it's hard to be in the house, first off. I don't think that it's an easy thing to do. Certain personalities come out more when you're put in that kind of stressful situation," Kaufman said. "Of course, there's the editing where they're choosing what they're showing and kind of manipulating certain scenarios into something bigger than they are.
"The coaches aren't in the house. They're just coaching. I think that Miesha has come off very well for herself. This is not a slight to her, but I don't think she always comes off as the most sophisticated or professional person at times. She will retort and make statements without thinking about them, but here, I think that she's played it smart."
Kaufman took one last parting shot at Rousey, explaining that she needs to grow up.
"In a situation like that, even though there's cameras all around, you have to be aware of what you're giving off, and it is your image," Kaufman said of Rousey. "I'm not saying to make it into something that you're not, but there are certain things that I would never say outside of a close circle of friends. Some of those things, I do feel are quite juvenile. You're a coach and a title holder in the UFC. You need to grow up a little bit and pull up your socks; represent yourself however you want, but also so that people watching can respect you as a human being."