This paper presents the results of our research focused on individuating and elaborating principles and methods that we have found highly productive in interviewing the family. We have synthesized these principles under the headings Hypothesizing, Circularity, and Neutrality, giving conceptual definitions, descriptions, and practical examples of their application. Our purpose is to aid the therapist in stimulating the family to produce meaningful information, which is indispensable to the therapist in making a therapeutic choice.