Margaret Olatunbosun at HuffPo has a great article on making good impressions in interviews. The tips are concrete and helpful. We liked this one especially:
Take strategic pauses during your conversation. They’ll usually have a bottle of water available for you. But if not, have one with you. Apart from the fact that you might get thirsty, it is a good way to take occasional sips just to gather your thoughts (my journalism/mass communication class experience).Communication is only colorful when you allow strategic pauses in order to allow both you and the hiring manager to think in-between questions and answers. And you know what? It positions you as someone who is in control of himself or herself.
When you’re too hasty in answering questions, you might come across as not thoughtful enough, and you might not be able to detect leading questions or poorly constructed questions.