Responsibility/trustworthiness 
These qualities cannot be really seen in a person, but you can recount the times in your previous jobs that you have held positions of responsibility. For example any job in which you had personnel beneath you, or if you were a scout/Guide leader.

Initiative/leadership 
These qualities are linked to confidence, but in addition show the employer examples of times you have used these skills and have prospered as a result. For example, you worked on a software solution to a work problem in your own time and it turned out to increase the efficiency of the task by 60%.

Body language 
A first impression can be greatly influenced by a person's body language. You are in trouble if all the right things are coming from your mouth, but your body is doing all the wrong things.

Do's Don'ts
  • Eye contact... on first meeting and at regular times during the interview. This displays interest and sincerity, but do not stare.
  • Fidget - Playing with your CV, bag, hair, a pencil or drumming your fingers betrays anxiety. Beware of your feet fidgeting also.
  • Raise and lower your eyebrows - briefly when you first meet. It draws attention to your face and although it is subtle, not doing it can create hostility.
  • Rub your ear - Gently massaging or tugging on the ear lobe betrays a subconscious desire to block out the speakers' words.
  • Handshake - return a handshake with the same pressure offered by the other person, avoid using a handshake that is too strong or too weak.
  • Scratch your neck - If the interviewer knows his body language, then they may suspect that what you are saying conflicts with your true feelings. 
  • Walk tall - Have a relaxed but confident posture as it conveys confidence and honesty.
  • Tug your collar - An interviewer may think you are telling lies. 
  • Opening palms and arms - Honesty and openness
  • Smooth the back of your head - indicates uncertainty
 
If you see any of the following, the chances are you'll have to work harder to convince the interviewer you are the person for the job:
  • If they are leaning away from you
  • If they fold their arms or cross their legs
  • If they firmly grip their upper arms. This represents either high anxiety or extreme anger and conveys almost total rejection. It is the clearest possible sign that he or she is uninterested in what you're saying.
 
Chat to the interviewer when they first meet you and take you to their office. After the interview confirm when you can expect to hear a decision from them, then move the conversation on to another matter. There is no definitive formula for interview success, just be relaxed and friendly, the easiest way to get your personality across is to be yourself.

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