Personality profiles continued: Priorities...

One of the most helpful elements in the application of personality profile information to teaching is the understanding of different goals and communication styles.
A student who's primary is a D (dominant) wants results and direct communication.  "Give it to me straight" they might say, or "just tell me what I'm doing wrong and I fix it".  They will ask direct questions of you and expect improvement fairly quickly.  They will ask "what?" a lot.
A student who's primary is an I (influential) will be relational and want enthusiastic feedback.  They will make small-talk at the start of the lesson in order to feel connected to you and this is very important to them.  While singing, they do the best under encouragement and they are your best advocates in your community :).  If you ask them to participate in a music recital, chances are they will ask "who?" else is involved.
A student who's primary is an S (supportive) looks for security and stability.  A voice that performs well one day and poorly the next will often be what brings them to your studio.  Like Influentials, they are relational in nature and will want to feel connected to you.  They will want to be supportive of you as you teach and will encourage you to share personally with them.  They will ask "how" in the process of a lesson.
A student who's primary is a C (conscientious) is concerned about quality and details.  They will be listening to the quality of their voice and looking for the best tone possible.  They are not very concerned about small-talk or being relational, but can get into lively discussions about "why?" something is the way it is.  They delve into the details and need to be encouraged to see the big picture.  They will practice diligently.
Remember: everyone has a primary and a secondary style and they can switch in the middle of a lesson if they get emotional or are under more stress than usual.  This is only one factor of many available for understanding how your student learns.  Learning styles (aural, visual, kinesthetic, etc), education and cultural background all play a part.