Palin: I'm not a 'bubble-head'

In the new People magazine, Sarah Palin hits back at portrayals of her as something of a dim bulb.

While she couldn't name a newspaper or magazine she reads when Katie Couric of CBS asked her, Palin said she has always been a "voracious reader."

"You have to be up on not only current events, but you have to understand the foundation of the issues that you're working on," Palin said in the interview, which will be in the magazine that hits newsstands Friday. "You can't just go on what is presented you."

Now, she said, she's reading "The Looming Tower: Al-Qaeda and the Road to 9/11," plus briefing papers.

"I appreciate a lot of information. I think that comes from growing up in a family of school teachers," she said.

Asked about Tina Fey's impersonation of her as somewhat ditzy and "bubble-headed" (on "Saturday Night Live" last weekend, Fey as Palin did her fancy beauty pageant walk during a press conference), Palin replied, "That's funny, I play her bubble-headed too when I imitate her."