The Fundamental Interpersonal Relations Orientation Behaviour (FIRO-B ®) assessment helps people understand their own behaviour and that of others in interpersonal situations. For more than 40 years, it has been used around the world to clarify human interactions in both business and personal situations. It explores three basic interpersonal needs (Inclusion, Control, and Affection) along two dimensions (Expressed and Wanted). The FIRO-B assessment can be used as an integral part of team-building initiatives, management training programs, personal development plans, and communication workshops. Requiring only 15 minutes to complete the 54 items, the FIRO-B tool quickly sets the stage for self-understanding.