Inside every woman is a Kanye, which sounds uncomfortable but actually means that maybe we'd all be better off forgetting about the penalties associated with being forceful while female and just f*cking going for it when it's show-and-tell-what-you-did time. Might as well, because science says when you do a group project with men, they end up getting the glory *and* the promotions, while you stay right where you are. So much for being a team player.
Whatever the explanation is—bosses devaluing women's contributions relative to men's, women clinging to the fallacy of "likeability"—there's one thing you can count on working in your favor, and that's you, serenely laying down the facts when Do-Nothing Doug tries to pass off your brilliant research as his own. Not today, Doug. Not ever.
Once more for emphasis: You must speak up for yourself. Or don't, and let your more assertive/articulate colleagues out-brag until you have to quit and live out the rest of your days as a hermit suffering from crippling shame and zero LinkedIn connections. And, as Vicki Salemi, career expert for Monster, put it: "If someone is taking credit for your work right in front of you, imagine what they're doing when you're not in the room."