while i cant speak for all other candidates, from what i know, i got chosen cause i appeared to be jovial throughout the interview and my boss said i would fit well in the unit. On the other hand, there was other bosses in the same interview, think i appeared to aloof and did not choose me. in the end, its the perspective of your future boss that matters. you cant prepare for this. be yourself and imagine talking to your much older cousins in a honest and confident manner.

and if you are asking what was the traits we input for PT in order for us to get to interview stage... again, cant speak for others. myself if i remember correctly, i value teamwork and integrity. no right or wrong answer though.. first thing they taught us is that everyone has different personality.. some get things done using cool analytical skills without needed teamwork... some requires communication skills in a team. so even if you put you like working alone.. nth wrong. depends on job.