|Unless this meeting was actually a class in penmanship or stenography, there are not many good reasons for your manager to focus on note taking. If you have a history of failing to pay attention in meetings and then making mistakes on the job, that is another story. Or, if your doodles are somehow distracting the group, that too is another story.|
Short of these types of scenarios, your manager needs to recognize that employees have different learning styles, and taking notes for the sake of looking interested is basically a game of corporate charades. At this point, you are an adult and you have presumably learned what you need to do in a meeting in order to effectively use the information that is presented. If you are absorbing the content, participating effectively, and letting your work behavior demonstrate that you are on top of the issues, there is no reason for your manager to have this discussion with you.
Is it possible that these meetings are less than stimulating and your manager is a little sensitive about this? If everyone in the room is doodling, then it might be easy to draw that conclusion, among other things.