The interview was a mix of basic skills (in order to do the job) and open-ended questions. It was pretty simple and any professional level person should do just fine. I would characterize the interview as very informal, but if I was going to interview for this job again, I would learn as much about the position as possible and decide which skills in my history were a match for the position. For example, since the position for which I applied was a telephone research interview position, I would highlight those jobs in my career history with an emphasis on sales skills, or outright sales. While the Research Associate position is not itself sales, I noticed that many of the skills are the same, as in piquing someone's interest, keeping them on the phone, and selling them on the importance of the call. Following a short phone screen and an in-person interview, there's a paid training that lasts for a couple of days. I mention it since it is understood that successfully completing the training is a part of the interview and hiring process. There is a written test, but most professionals should have no trouble learning the requisite skills and information and passing the test.