Source: This article was originally published on CNBC.

Written by: Courtney Connley, CNBC Make It

It’s a familiar scenario in most workplaces: A few employees whose skills and performance seem average keep getting promoted — sometimes over their top-performing colleagues.

There can be a number of reasons for this, but there’s a particularly common one. The people speeding ahead, tend to be “happy extroverts.” It’s a personality type that gives some people a real career advantage.

I observed this 30 years ago when I noticed that it wasn’t the smartest person among my Harvard Business School classmates who got hired first, but rather the most popular. These people were the ones who were outgoing and friendly — warm, authentic and highly verbal — the ones who planned the beach picnics and tracked you down after class to compliment you on a good answer.

At first, I found this dynamic irritating.  I remember calling home and moaning, ‘Mom, I don’t think my grades here actually count at all!

But since then, I’ve watched the happy extrovert phenomenon play out in companies of every kind. And now, as a boss myself, I understand why.”

Organizations run so much better when teamwork is high and drama is low. Happy extroverts help make that happen. And when these individuals over-deliver on their work, they can become, ultimately, a boss’s favorite type of employee.

But if you’re an introvert there’s no need to despair. Two of my own kids are your comrades, and they’ve done just fine professionally. In addition to performing at a high level, my introverted kids also make sure to tell everyone, bosses included, not to mistake their reserve for negativity.

Organizations run so much better when teamwork is high and drama is low.

They’re in the game, they just communicate differently. You have to say this kind of thing out loud. And also, remember to smile much more than you think you have to. People cannot read your mind, but they sure can read your face.

In the long run, talent almost always wins. That means if you’re on the anti-social side but you’re good — really, really good — eventually organizations take notice.

Until then, your colleagues who are happy extroverts will almost always have an edge. Your boss may not tell you, but hey — that’s what I’m here for.