That colleague looking into your eyes intently as he answers your questions may be telling you a fib. Pamela Meyer, author of Liespotting: Proven Techniques to Detect Deception, says to look for these common tip-offs that someone is lying:

You’ve either seen it or done it: You disagree with something during a meeting, but instead of speaking up, you sit there and stew. Maybe that’s because whenever an alternative point of view is raised, it gets batted down. There’s nothing wrong with disagreeing. Here are tips on managing your allies strategically, arguing professionally and making sure you have a safety net in place:

Hold more productive, inspiring meetings by stealing a rule from Google’s playbook ... Squeeze breathing room into your day by scheduling meetings for 50 minutes rather than 60 ... Improve your team’s performance with this exercise ... Use these seven words more often in 2010.