This week in, the second of our tour of reporters during Emma's absence, Cait Morrison speaks to the author of Captivate: The Science of Succeeding with People to find out how playing to your strengths is key to making friends and influencing people.Vanessa Van Edwards tells us how Donald Trump uses body language to draw people to his messages and why Lady Gaga's motivation to say no is something we can all learn from, as well as the best place to stand at a networking event.