We all take notice of other people’s body language. Whether you have a PhD in body language and can almost read somebody’s thoughts just by looking at the angle of their elbow, or you are just an ordinary person that recognises the sulky-faced, elbows-crossed, protruding bottom lip of a disinterested teenager in a bad mood, we all have some degree of awareness.
Many interviewers, whether they work in HR or are line managers, have greater awareness than most. That fact established, we can, therefore, agree that the way you compose yourself, and the body language you display during an interview, can have as much bearing on the outcome as your ability to actually do the job.