How to praise kids: It's a hot topic for many parents and educators. A lot of the conversation around it has stemmed from studies by Carol Dweck, professor of psychology at Stanford who has been researching this specific topic for many years.

“My research shows that praise for intelligence or ability backfires,” said Dweck, who co-authored a seminal research paper on the effects of praise on motivation and performance. “What we’ve shown is that when you praise someone, say, ‘You’re smart at this,’ the next time they struggle, they think they’re not. It’s really about praising the process they engage in, not how smart they are or how good they are at it, but taking on difficulty, trying many different strategies, sticking to it and achieving over time.”

But what some might not know is that this paradox is strongest for girls.

Dweck's research, which focuses on what makes people seek challenging tasks, persist through difficulty and do well over time, has shown that many girls believe their abilities are fixed, that individuals are born with gifts and can't change. Her research finds that when girls think this way, they often give up, rather than persisting through difficulties. They don't think they possess the ability to improve, and nowhere is the phenomenon stronger than in math.

“Of all the subjects on earth, people think math is the most fixed,” Dweck said. “It’s a gift, you either have it or you don’t. And that it’s most indicative of your intelligence.” This attitude presents an especially sticky problem to educators working to boost girls' interest and passion for science, technology, engineering and math – STEM subjects. For many boys, believing math is a fixed ability doesn’t hamper achievement -- they just assume they have it, Dweck said. But girls don’t seem to possess that same confidence, and in their efforts to achieve perfection, Dweck’s research shows they shy away from subjects where they might fail.