Communication in everyday life can be severely affected in adolescence after a traumatic brain injury (TBI). Abilities associated with vocal verbal response, gesture, gaze, facial expression and posture are frequently impaired. While much effort is often invested in clinical assessments, altered communicative functions in a real life setting are explored to a much lesser extent. In this case study, we discuss the usability of a triangulation of methods for analysis, involving a 16-year-old adolescent with TBI. Communication Management (CM) is explored, based on self-evaluation by the participant in video recordings of dyadic and triadic conversations. Ratings created independently by the subject and his parents on The Communicative Effectiveness Index (CETI) are analysed. A comparison is made with a selection of clinical test results on cognition, speech and language. We discuss how the methods can be applied to analyse communicative functions that are not readily detected in a clinical environment.