It's done by a psychologist and they ask you 5\ 6 questions similar to those posted above, each one is about a differnt scenario. Mine took about an hour and a quarter. Although there are only 5 main questions , the interviewer will go in to a lot of detail on each of those scenaros so make sure they are examples you can talk about well . Down to the finest detail. I found it was the toughest part of the tests, but as long as you just take your time and think about what you are going to say before you say it and don't waffle should get through it okay! Think there is a 6th question now asking about a time you have had to study hard or commit a lot of time to something. You get given a sheet before the interview with the questions on , u get time to fill in your answers on the sheet , then hand sheet back to interviewer and they ask you the questions about your scenarios.