What does Melania Trump think of Donald Trump’s Dancing? Body Language Reveals Secrets Traci Brown is ranked in the top 3 Body Language Experts in the World, and a top keynote speaker for associations and corporations. A body language expert and behavior analyst, she works with sales teams, leaders, and investigators on lie detection for sales, leadership, hiring, and financial and safety investigations, to build the bottom line, drawing from her training with law enforcement and experience in a