Recently I've got a question from a colleague: "Have you had a situation when somebody was trying to manipulate you  or your behavior? What can be the best way to stop/resist this sort of attitude? Stop any interaction with the person?" From my perspective manipulation, generally, has to aspects to it:

1. Other person wants you to do something (which is not necessarily a bad thing).
2. She wants to make you do it in a sort of "covert" way, which I would generally call a bad thing in professional environment.

When it comes to response to manipulation, all things being equal, I would have a conversation with a person saying something along the lines of "Hey, I've noticed that you try to trick me into something and don't like you doing that. If you need something from me, let's discuss, but don't try to trick me."

This kind of feedback serves two purposes: (a) letting other party know that you've noticed manipulation and don't like it (who does?); (b) showing a better way to do business with you. If a case is not helpless, this should help.

What do you do when somebody tries to manipulate you?

I'm reading Garr Reynolds' "Prezentation Zen" and his points about efficiency of presentations, which can naturally be translated into efficiency of communication, resonated with my mind:

The presentation would have been greatly improved if the presenter had simply kept two questions in mind in preparing for the talk: What's my point? And why does it matter?

Now communication is more important than ever for me, since I work on-site with client and do not have luxury of face to face communication with my team. Should I be asked to generalize Garr's statement I would do it this way:

The communication would be greatly improved if the person speaking now would simply keep two questions in mind, when preparing to speak: Why my speech does matter? And what is my point?

I have heard dozens of perfectly made points, which unfortunately were not relevant and simply consumed the bandwidth. Alas bandwidth of communication is more limited than we usually think.

Keep that in mind and be an effective communicator.