Peggy,
I have been trained in behavioral interviewing also but not the Targeted Selection that you mention. Behavioral interviewing is a great way, though, to understand how a candidate will react in a variety of situations. Structuring the questions can be a challenge but a thorough review of the job description (which must be very clear in identifying the responsibilities and qualifications)and the resume will give you ideas for the questions to ask and the probing that you need to do. I like your process of conducting the phone conversation first before you do the face-to-face. You still have a first impression but that first impression is not based on the appearance of the candidate but instead on what they say and how they say it.
Dr. Patricia Kapper