Are women the worst enemies of their own at work?

Here's a NYTimes article about women at workplace: A Sisterhood of Workplace Infighting

Although I haven't actually worked a full-time job myself, I did have similar experience in the past where the female coworkers / classmates are hiding information and male ones are more open to share.

I thought it was more a personality issue though. Men or women, there are just some people who are good-natured and like to share; some others who want to keep everything good to themselves.

Hopefully when I start working later this year, I'll have collaborative and smart people to work with!