A study, reported in a Forbes magazine article called Is Your Body Betraying You In Job Interviews?, claims that "a first impression is based on 7% spoken words, 38% tone of voice and 55% body language." The article is from 2006 but I imagine the science is still good. There is no substitute for being enthusiastic. This probably goes for assessment centres too. But what body language? How can one 'appear' enthusiastic in a scenario as artificial as an interview? Maybe its time to put on a show, break out the mirror and with it the Othello charm. Although, I suppose it helps if you are genuinely enthusiastic...