Conversational chemistry might seem intangible, but psychologists are beginning figure out what makes some conversations work while others fall apart. Charles Duhigg, author of the upcoming book “Supercommunicators,” and conversation researcher Michael Yeomans, PhD, talk about how anyone can learn to communicate better, the best way to build rapport with someone you just met, why it’s important to think about your goals in a conversation, how to have a productive conversation about a disagreement and how technology changes conversation.