The advice given based on the NBI often have a lot of influence on the lives of those who complete the questionnaires. The interpretation thereof, therefore, must be done carefully and professionally. The method is easy to understand, but a licensee has a deeper comprehension of the method and can, therefore, provide a more insightful explanation than just the computer-generated report. The licensees are trained in interpreting brain preference profiles. They are experts in their own fields, such as coaching, training, teaching, etc. Therefore, you can only do a questionnaire through a license holder.