The first way demonstrative communication can be positive, is making sure the information is relevant to the conversation and keeping it interesting. If you lose your audience, then you have just wasted your time and their time. You will know by how your audience responds. If they start to fidget in their seat or look like they are bored, that means you need to rethink how you are communicating the information.
When someone shows enthusiasm by nodding their head or keeping their attention on you, you are on the right track. But you also need to listen thoroughly to the feedback you are getting before going forward. If someone is not listening to everything that someone is saying, you are missing what they are trying to actually say. Not every piece of information may be important, but you weed out the information after listening, and before responding.
A person may also ask questions that would have been answered if a person had waited to ask, and not just dwell on that particular part. We tend to have a question that comes to mind and instead of listening through an entire conversation or presentation, we tune out everything until we are able to ask the question. When this happens, you can also miss as to where that exact question was already answered.
Body language is another way of nonverbal communication. The way a person presents themselves as a sender and a